초록 ▼

A shell and tube heat exchanger has two shell coolant and two tube coolant passageways communicating with a cavity in a shell. Removably received in the shell cavity is a tube bundle with tube headers. A locating screw extends through the shell to engage a locating recess in one tube header. The scr

A shell and tube heat exchanger has two shell coolant and two tube coolant passageways communicating with a cavity in a shell. Removably received in the shell cavity is a tube bundle with tube headers. A locating screw extends through the shell to engage a locating recess in one tube header. The screw locates the tube bundle angularly about the central axis and longitudinally along the central axis, and is also used to electrically ground the tube bundle. An end cover, a flow separator, and resilient disc to take up thermal expansion are installed in each end of the shell to direct coolant through the tube bundle in multiple passes. Receivers with rotatable connectors are bonded to each shell coolant and tube coolant passageway. Angled connector nozzles can be connected to external conduits in any orientation.

대표청구항 ▼

1. A shell and tube heat exchanger for transferring heat between a shell coolant and a tube coolant, the coolants being carried by external conduits, the heat exchanger having first and second shell coolant passageways and first and second tube coolant passageways to conduct the coolants, the heat e

1. A shell and tube heat exchanger for transferring heat between a shell coolant and a tube coolant, the coolants being carried by external conduits, the heat exchanger having first and second shell coolant passageways and first and second tube coolant passageways to conduct the coolants, the heat exchanger comprising:a shell, the shell having a central axis, the shell extending between opposite first and second ends, the shell having a wall extending around a periphery and defining a shell cavity therein, the first shell coolant passageway passing through the shell wall adjacent the shell first end, the second shell coolant passageway passing through the shell wall adjacent the shell second end, the shell having at least one threaded locating hole through the shell wall; a first tube header having an outer periphery, and a second tube header having an outer periphery, the first and second tube headers being spaced apart and generally parallel, at least one tube header periphery having a locating recess; a plurality of generally straight and parallel tubes extending between the first and second tube headers, the tubes having first and second open ends attached to and penetrating the first and second tube headers, respectively; wherein the first tube header, the second tube header, and the tubes comprise a tube bundle, the tube bundle being removably received within the shell cavity with the first tube header adjacent the shell first end, and the second tube header adjacent the shell second end, the tube header locating recess being juxtaposed with the threaded locating hole; a locating screw extending between opposite proximal and distal ends, the locating screw threadably engaging the threaded locating hole, the locating screw proximal end engaging the locating recess, the locating screw being adapted to locate the tube bundle angularly about the shell central axis and longitudinally along the shell central axis in a predetermined alignment wit the shell; a first end cover removably attached to the shell first end, the first end cover having an inside surface, and a second end cover removably attached to the shell second end, the second end cover having an inside surface; wherein the shell cavity includes a first chamber extending between the first tube header and the first end cover, and the shell cavity includes a second chamber extending between the second tube header and the second end cover, the first and second tube coolant passageways being in communication with the first and second chambers respectively, and the tube first and second open ends being in communication with the first and second chambers respectively, so as to allow passage of the tube coolant between the first and second chambers through the tubes; first tube header sealing means for slidably sealing the first tube header to the shell; second tube header sealing means for slidably sealing the second tube header to the shell; first end cover sealing means for sealing the first end cover to the shell; second end cover sealing means for sealing the second end cover to the shell; wherein the shell is constructed of a non-metallic corrosion resistant material; and wherein the first and second tube headers and tubes are constructed of metal materials having efficient heat transfer properties. 2. The heat exchanger of claim 1, wherein the locating screw is adapted to electrically ground the tube bundle to an external ground.3. The heat exchanger of claim 1, wherein:the first tube header sealing means includes at least one first header O-ring sealingly juxtaposed between the first tube header periphery and the shell; the second tube header sealing means includes at least one second header O-ring sealingly juxtaposed between the second tube header periphery and the shell; the first end cover sealing means includes at least one first end cover O-ring sealingly juxtaposed between the first end cover and the shell; and the second end cover sealing means includes at least one second end cover O-ring sealingly juxtaposed between the second end cover and the shell. 4. The heat exchanger of claim 1, further comprising:a first resilient disc disposed against the first end cover inside surface, the first resilient disc having a plurality of channels extending radially outward; a second resilient disc disposed against the second end cover inside surface, the second resilient disc having a plurality of channels extending radially outward; a first flow separator removably received within the first chamber, the first flow separator having a plurality of plates, the plates extending radially from unitary proximal ends adjacent the shell central axis outward to distal ends adjacent the shell, wherein the shell includes a plurality of grooves aligned with the shell central axis, the plates distal ends being received in the grooves, the plates extending axially from the first tube header to the first resilient disc wherein the plates are sealingly received in the channels; and a second flow separator removably received within the second chamber, the second flow separator having a plurality of plates, the plates extending radially from unitary proximal ends adjacent the shell central axis outward to distal ends adjacent the shell, wherein the shell includes a plurality of grooves aligned with the shell central axis, the plates distal ends being received in the grooves, the plates extending axially from the second tube header to the second resilient disc wherein the plates are sealingly received in the channels. 5. The heat exchanger of claim 4, further comprising:an inner pin and socket locating means for locating and attaching the first and second flow separators to the first and second tube headers, respectively; an outer pin and socket locating means for locating and attaching the first and second flow separators to the first and second end covers, respectively; and wherein the first and second resilient disc each includes a hole therethrough juxtaposed with the outer pin and socket locating means. 6. The heat exchanger of claim 5, wherein the tubes are arranged in a predetermined pattern having adjacent straight rows of tubes and the first and second flow separator plates further comprise:an outer portion aligned with the shell central axis so as to be received in the channels; and an inner portion integral and in stepped relation with the outer portion transverse to the direction of the shell central axis, the inner portion being disposed between the adjacent straight rows of tubes so as to not obstruct tube coolant flow. 7. The heat exchanger of claim 1, further comprising:a first shell coolant receiver and a second shell coolant receiver, the first and second shell coolant receivers being juxtaposed with the first and second shell coolant passageways respectively, each shell coolant receiver having a central axis, a body extending between upper and lower ends, a circular bore passing through the body and in communication with the shell cavity, a saddle-shaped flange encircling the body, the flange closely conforming to the shell, the body lower end having a pilot penetrating the shell, the flange and body being bounded to the shell; a first shell coolant connector and a second shell coolant connector, each shell coolant connector having a central axis and a body extending between upper and lower ends, the body lower end having a pilot, the body upper end having a nozzle, the nozzle having an axis at an angle to the connector central axis of between zero and ninety degrees, the first shell coolant connector pilot being removably and rotatably received within the first shell connector receiver bore, and the second shell coolant connector pilot being removably and rotatably received within the second shell coolant receiver bore, each shell coolant connector having a circular bore passing through the body and in communication with the respective shell coolant receiver bore; first shell coolant connector sealing means for rotatably sealing the first shell coolant connector to the first shell coolant receiver; second shell coolant connector sealing means for rotatably sealing the second shell coolant connector to the second shell coolant receiver; a first tube coolant receiver and a second tube coolant receiver, the first and second tube coolant receivers being juxtaposed with the first and second tube coolant passageways respectively, each tube coolant receiver having a central axis and a body extending between upper and lower ends, the first and second tube coolant receivers each extending between upper and lower ends, a circular bore passing through the body and in communication with the shell cavity, a saddle-shaped flange encircling the body, the flange closely conforming to the shell, the body lower end having a pilot penetrating the shell, the flange and body being bonded to the shell; a first shell coolant connector and a second shell coolant connector, each shell coolant connector having a central axis and a body extending between upper and lower ends, the body lower end having a pilot, the body upper end having a nozzle, the nozzle having an axis at an angle to the connector central axis of between zero and ninety degrees, the first shell coolant connector pilot being removably and rotatably received within the first shell connector receiver bore, and the second shell coolant connector pilot being removably and rotatably received within the second shell coolant receiver bore, each shell coolant connector having a circular bore passing through the body and in communication with the respective shell coolant receiver bore; first shell coolant connector sealing means for rotatably sealing the first shell coolant connector to the first shell coolant receiver; second shell coolant connector sealing means for rotatably sealing the second shell coolant connector to the second shell coolant receiver; a first tube coolant receiver and a second tube coolant receiver, the first and second tube coolant receivers being juxtaposed with the first and second tube coolant passageways respectively, each tube coolant receiver having a central axis and a body extending between upper and lower ends, the first and second tube coolant receivers each having a circular a bore passing through the body and in communication with the first and second chambers respectively; a first tube coolant connector and a second tube coolant connector, each tube coolant connector having a central axis and a body extending between upper and lower ends, the body lower end having a pilot, the body upper end having a nozzle, the nozzle having an axis at an angle to the connector central axis of between zero and ninety degrees, the first tube coolant connector pilot being removably and rotatably received within the first tube coolant receiver bore, and the second tube coolant connector pilot being removably and rotatably received within the second tube coolant receiver bore, each tube coolant connector having a circular bore passing through the body and in communication with the respective tube coolant receiver bore; first tube coolant connector sealing means for rotatably sealing the first tube coolant connector to the first tube coolant receiver; second tube coolant connector sealing means for rotatably sealing the second tube coolant connector to the second tube coolant receiver, so as to allow connection of the nozzles to the external conduits in any orientation; and retaining means for retaining the connector pilot in the receiver bore, while allowing selective rotation of the connector about the connector central axis. 8. The heat exchanger of claim 7, wherein:the first tube coolant receiver has a flange encircling the body; the body lower end has a pilot penetrating the shell and the first chamber; and the first tube coolant receiver flange and pilot are bonded to the shell. 9. The heat exchanger of claim 7, wherein:the second tube coolant receiver has a flange encircling the body; the body lower end has a pilot penetrating the shell and the second chamber; and the second tube coolant receiver flange and pilot are bonded to the shell. 10. The heat exchanger of claim 7, wherein the first tube coolant receiver is integral with the first end cover.11. The heat exchanger of claim 7, wherein the second tube coolant receiver is integral with the second end cover.12. The heat exchanger of claim 7, wherein:the first shell coolant connector sealing means includes at least one first shell coolant connector O-ring sealingly juxtaposed between the first shell coolant connector pilot and the first shell coolant receiver bore; the second shell coolant connector sealing means includes at least one second shell coolant connector O-ring sealingly juxtaposed between the second shell coolant connector pilot and the second shell coolant receiver bore; the first tube coolant connector sealing means includes at least one first tube coolant connector O-ring sealingly juxtaposed between the first tube coolant connector pilot and the first tube coolant receiver bore; and the second tube coolant connector sealing means includes at least one second tube coolant connector O-ring sealingly juxtaposed between the second tube coolant connector pilot and the second tube coolant receiver bore. 13. A shell and tube heat exchanger for transferring heat between a shell coolant and a tube coolant, the coolants being carried by external conduits, the heat exchanger having first and second shell coolant passageways and first and second tube coolant passageways to conduct the coolants, the heat exchanger comprising:a shell, the shell having a central axis, the shell extending between opposite first and second ends, the shell having a wall extending around a periphery and defining a shell cavity therein, the first shell coolant passageway passing through the shell wall adjacent the shell first end, the second shell coolant passageway passing through the shell wall adjacent the shell second end, the shell having a plurality of grooves within the shell cavity, the grooves being aligned with the shell central axis; a first tube header having an outer periphery, and a second tube header having an outer periphery, the first and second tube headers being spaced apart and generally parallel; a plurality of generally straight and parallel tubes extending between the first and second tube headers, the tubes having first and second open ends attached to and penetrating the first and second tube headers, respectively; wherein the first tube header, the second tube header, and the tube comprise a tube bundle, the tube bundle being removably received within the shell cavity with the first tube header adjacent the shell first end, and the second tube header adjacent the shell second end; a first end cover removably attached to the shell first end, the first end cover having an inside surface, and a second end cover removably attached to the shell second end, the second end cover having an inside surface; wherein the shell cavity includes a first chamber extending between the first tube header and the first end cover, and the shell cavity includes a second chamber extending between the second tube header and the second end cover, the first and second tube coolant passageways being in communication with the first and second chambers respectively, and the tube first and second open ends being in communication with the first and second chambers respectively, so as to allow passage of the tube coolant between the first and second chambers through the tubes; first tube header sealing means for slideably sealing the first tube header to the shell; second tube header sealing means for slidably sealing the second tube header to the shell; first end cover sealing means for sealing the first end cover to the shell; second end cover sealing means for sealing the second end cover to the shell; a first resilient disc disposed against the first end cover inside surface, the first resilient disc having a plurality of channels extending radially outward; a second resilient disc disposed against the second end cover inside surface, the second resilient disc having a plurality of channels extending radially outward; a first flow separator removably received within the first chamber, the first flow separator having a plurality of plates, the plates extending radially from unitary proximal ends adjacent the shell central axis outward to distal ends adjacent the shell, the plates distal ends being received in the shell grooves, the plates extending axially from the first tube header to the first resilient disc wherein the plates are sealingly received in the channels; a second flow separator removably received within the second chamber, the second flow separator having a plurality of plates, the plates extending radially from unitary proximal ends adjacent the shell central axis outward to distal ends adjacent the shell, the plates distal ends being received in the shell grooves, the plates extending axially from the second tube header to the second resilient disc wherein the plates are sealingly received in the channels; wherein the shell is constructed of a non-metallic corrosion resistant material; and wherein the first and second tube headers and tubes are constructed of metal materials having efficient heat transfer properties. 14. The heat exchanger of claim 13, wherein:the first tube header sealing means includes at least one first header O-ring sealingly juxtaposed between the first tube header periphery and the shell; the second tube header sealing means includes at least one second header O-ring sealingly juxtaposed between the second tube header periphery and the shell; the first end cover sealing means includes at least one first end cover O-ring sealingly juxtaposed between the first end cover and the shell; and the second end cover sealing means includes at least one second end cover O-ring sealingly juxtaposed between the second end cover and the shell. 15. The heat exchanger of claim 13, wherein:at least one tube header periphery includes a locating recess; the shell includes at least one threaded locating hole through the shell wall; and the heat exchanger further comprises a locating screw extending between opposite proximal and distal ends, the locating screw threadably engaging the threaded locating hole, the locating screw proximal end engaging the locating recess, the locating screw being adapted to locate the tube bundle angularly about the shell central axis and longitudinally along the shell central axis in a predetermined alignment with the shell. 16. The heat exchanger of claim 15, wherein the locating screw is adapted to electrically ground the tube bundle to an external ground.17. The heat exchanger of claim 13, further comprising:an inner pin and socket locating means for locating and attaching the first and second flow separators to the first and second tube headers, respectively; an outer pin and socket locating means for locating and attaching the first and second flow separators to the first and second end covers, respectively; and wherein the first and second resilient disc each includes a hole therethrough juxtaposed with the outer pin and socket locating means. 18. The heat exchanger of claim 17, wherein the tubes are arranged in a predetermined pattern having adjacent straight rows of tubes and the first and second flow separator plates further comprise:an outer portion aligned with the shell central axis so as to be received in the channels; and an inner portion integral and in stepped relation with the outer portion transverse to the direction of the shell central axis, the inner portion being disposed between the adjacent straight rows of tubes so as to not obstruct tube coolant flow. 19. The heat exchanger of claim 13, further comprising:a first shell coolant receiver and a second shell coolant receiver, the first and second shell coolant receivers being juxtaposed with the first and second shell coolant passageways respectively, each shell coolant receiver having a central axis, a body extending between upper and lower ends, a circular bore passing through the body and in communication with the shell cavity, a saddle-shaped flange encircling the body, the flange closely conforming to the shell, the body lower end having a pilot penetrating the shell, the flange and body being bonded to the shell; a first shell coolant connector and a second shell coolant connector, each shell coolant connector having a central axis and a body extending between upper and lower ends, the body lower end having a pilot, the body upper end having a nozzle, the nozzle having an axis at an angle to the connector central axis of between zero and ninety degrees, the first shell coolant connector pilot being removably and rotatably received within the first shell connector receiver bore, and the second shell coolant connector pilot being removably and rotatably received within the second shell coolant receiver bore, each shell coolant connector having a circular bore passing through the body and in communication with the respective shell coolant receiver bore; first shell coolant connector sealing means for rotatably sealing the first shell coolant connector to the first shell coolant receiver; second shell coolant connector sealing means for rotatably sealing the second shell coolant connector to the second shell coolant receiver; a first tube coolant receiver and a second tube coolant receiver, the first and second tube coolant receivers being juxtaposed with the first and second tube coolant passageways respectively, each tube coolant receiver having a central axis and a body extending between upper and lower ends, the first and second tube coolant receivers each having a circular bore passing through the body and in communication with the first and second chamber respectively; a first tube coolant connector and a second tube coolant connector, each tube coolant connector having a central axis and a body extending between upper and lower ends, the body lower end having a pilot, the body upper end having a nozzle, the nozzle having an axis at an angle to the connector central axis of between zero and ninety degrees, the first tube coolant connector pilot being removably and rotatably received within the first tube coolant receiver bore, and the second tube coolant connector pilot being removably and rotatably received within the second tube coolant receiver bore, each tube coolant connector having a circular bore passing through the body and in communication with the respective tube coolant receiver bore; first tube coolant connector sealing means for rotatably sealing the first tube coolant connector to the first tube coolant receiver; second tube coolant connector sealing means for rotatably sealing the second tube coolant connector to the second tube coolant receiver, so as to allow connection of the nozzles to the external conduits in any orientation; and retaining means for retaining the connector pilot in the receiver bore, while allowing selective rotation of the connector about the connector central axis. 20. The heat exchanger of claim 19, wherein:the first tube coolant receiver has a flange encircling the body; the body lower end has a pilot penetrating the shell and the first chamber; and the first tube coolant receiver flange and pilot are bonded to the shell. 21. The heat exchanger of claim 19, wherein:the second tube coolant receiver has a flange encircling the body; the body lower end has a pilot penetrating the shell and the second chamber; and the second tube coolant receiver flange and pilot are bonded to the shell. 22. The heat exchanger of claim 19, wherein the first tube coolant receiver is integral with the first end cover.23. The heat exchanger of claim 19, wherein the second tube coolant receiver is integral with the second end cover.24. The heat exchanger of claim 19, wherein:the first shell coolant connector sealing means includes at least one first shell coolant connector O-ring sealingly juxtaposed between the first shell coolant connector pilot and the first shell coolant receiver bore; the second shell coolant connector sealing means includes at least one second shell coolant connector O-ring sealingly juxtaposed between the second shell coolant connector pilot and the second shell coolant receiver bore; the first tube coolant connector sealing means includes at least one first tube coolant connector O-ring sealingly juxtaposed between the first tube coolant connector pilot and the first tube coolant receiver bore; and the second tube coolant connector sealing means includes at least one second tube coolant connector O-ring sealingly juxtaposed between the second tube coolant connector pilot and the second tube coolant receiver bore. 25. A shell and tube heat exchanger for transferring heat between a shell coolant and a tube coolant, the coolants being carried by external conduits, the heat exchanger having first and second shell coolant passageways and first and second tube coolant passageways to conduct the coolants, the heat exchanger comprising:a shell, the shell having a central axis, the shell extending between opposite first and second ends, the shell having a wall extending around a periphery and defining a shell cavity therein, the first shell coolant passageway passing through the shell wall adjacent the shell first end, the second shell coolant passageway passing through the shell wall adjacent the shell second end; a first tube header having an outer periphery, and a second tube header having an outer periphery, the first and second tube headers being spaced apart and generally parallel; a plurality of generally straight and parallel tubes extending between the first and second tube headers, the tubes having first and second open ends attached to and penetrating the first and second tube headers, respectively; wherein the first tube header, the second tube header, and the tubes comprise a tube bundle, the tube bundle being removably received within the shell cavity with the first tube header adjacent the shell first end, and the second tube header adjacent the shell second end; a first end cover removably attached to the shell first end, the first end cover having an inside surface, and a second end cover removably attached to the shell second end, the second end cover having an inside surface; wherein the shell cavity includes a first chamber extending between the first tube header and the first end cover, and the shell cavity includes a second chamber extending between the second tube header and the second end cover, the first and second tube coolant passageways being in communication with the first and second chambers respectively, and the tube first and second open ends being in communication with the first and second chambers respectively, so as to allow passage of the tube coolant between the first and second chambers through the tubes; first tube header sealing means for slidably sealing the first tube header to the shell; second tube header sealing means for slidably sealing the second tube header to the shell; first end cover sealing means for sealing the first end cover to the shell; second end cover sealing means for sealing the second end cover to the shell; a first shell coolant receiver and a second shell coolant receiver, the first and second shell coolant receivers being juxtaposed with the first and second shell coolant passageways respectively, each shell coolant receiver having a central axis, a body extending between upper and lower ends, a circular bore passing through the body and in communication with the shell cavity, a saddle-shaped flange encircling the body, the flange closely conforming to the shell, the body lower end having a pilot penetrating the shell, the flange and body being bonded to the shell; a first shell coolant connector and a second shell coolant connector, each shell coolant connector having a central axis and a body extending between upper and lower ends, the body lower end having a pilot, the body upper end having a nozzle, the nozzle having an axis at an angle to the connector central axis of between zero and ninety degrees, the first shell coolant connector pilot being removably and rotatably received within the first shell connector receiver bore, and the second shell coolant connector pilot being removably and rotatably received within the second shell coolant receiver bore, each shell coolant connector having a circular bore passing through the body and in communication with the respective shell coolant receiver bore; first shell coolant connector sealing means for rotatably sealing the first shell coolant connector to the first shell coolant receiver; second shell coolant connector sealing means for rotatably sealing the second shell coolant connector to the second shell coolant receiver; a first tube coolant receiver and a second tube coolant receiver, the first and second tube coolant receivers being juxtaposed with the first and second tube coolant passageways respectively, each tube coolant receiver having a central axis and a body extending between upper and lower ends, the first and second tube coolant receivers each having a circular bore passing through the body and in communication with the first and second chamber respectively; a first tube coolant connector and a second tube coolant connector, each tube coolant connector having a central axis and a body extending between upper and lower ends, the body lower end having a pilot, the body upper end having a nozzle, the nozzle having an axis at an angle to the connector central axis of between zero and ninety degrees, the first tube coolant connector pilot being removably and rotatably received within the first tube coolant receiver bore, and the second tube coolant connector pilot being removably and rotatably received within the second tube coolant receiver bore, each tube coolant connector having a circular bore passing through the body and in communication with the respective tube coolant receiver bore; first tube coolant connector sealing means for rotatably sealing the first tube coolant connector to the first tube coolant receiver; second tube coolant connector sealing means for rotatably sealing the second tube coolant connector to the second tube coolant receiver, so as to allow connection of the nozzles to the external conduits in any orientation; retaining means for retaining the connector pilot in the receiver bore, while allowing selective rotation of the connector about the connector central axis; wherein the shell is constructed for a non-metallic corrosion resistant material; and wherein the first and second tube headers and tubes are constructed of metal materials having efficient heat transfer properties. 26. The heat exchanger of claim 25, wherein:the first tube coolant receiver has a flange encircling the body; the body lower end has a pilot penetrating the shell and the first chamber; and the first tube coolant receiver flange and pilot are bonded to the shell. 27. The heat exchanger of claim 25, wherein:the second tube coolant receiver has a flange encircling the body; the body lower end has a pilot penetrating the shell and the second chamber; and the second tube coolant receiver flange and pilot are bonded to the shell. 28. The heat exchanger of claim 25, wherein the first tube coolant receiver is integral with the first end cover.29. The heat exchanger of claim 25, wherein the second tube coolant receiver is integral with the second end cover.30. The heat exchanger of claim 25, wherein:the first shell coolant connector sealing means includes at least one first shell coolant connector O-ring sealingly juxtaposed between the first shell coolant connector pilot and the first shell coolant receiver bore; the second shell coolant connector sealing means includes at least one second shell coolant connector O-ring sealingly juxtaposed between the second shell coolant connector pilot and the second shell coolant receiver bore; the first tube coolant connector sealing means includes at least one first tube coolant connector O-ring sealingly juxtaposed between the first tube coolant connector pilot and the first tube coolant receiver bore; and the second tube coolant connector sealing means includes at least one second tube coolant connector O-ring sealingly juxtaposed between the second tube coolant connector pilot and the second tube coolant receiver bore. 31. The heat exchanger of claim 25, wherein:at least one tube header periphery includes a locating recess; the shell includes at least one threaded locating hole through the shell wall; and the heat exchanger further comprises a locating screw extending between opposite proximal and distal ends, the locating screw threadably engaging the threaded locating hole, the locating screw proximal end engaging the locating recess, the locating screw being adapted to locate the tube bundle angularly about the shell central axis and longitudinally along the shell central axis in a predetermined alignment with the shell. 32. The heat exchanger of claim 31, wherein the locating screw is adapted to electrically ground the tube bundle to an external ground.33. The heat exchanger of claim 25, further comprising:a first resilient disc disposed against the first end cover inside surface, the first resilient disc having a plurality of channels extending radially outward; a second resilient disc disposed against the second end cover inside surface, the second resilient disc having a plurality of channels extending radially outward; a first flow separator removably received within the first chamber, the first flow separator having a plurality of plates, the plates extending radially from unitary proximal ends adjacent the shell central axis outward to distal ends adjacent the shell, wherein the shell includes a plurality of grooves aligned with the shell central axis, the plates distal ends being received in the grooves, the plates extending axially from the first tube header to the first resilient disc wherein the plates are sealingly received in the channels; and a second flow separator removably received within the second chamber, the second flow separator having a plurality of plates, the plates extending radially from unitary proximal ends adjacent the shell central axis outward to distal ends adjacent the shell, wherein the shell includes a plurality of grooves aligned with the shell central axis, the plates distal ends being received in the grooves, the plates extending axially from the second tube header to the second resilient disc wherein the plates are sealingly received in the channels. 34. The heat exchanger of claim 33, further comprising:an inner pin and socket locating means for locating and attaching the first and second flow separators to the first and second tube headers, respectively; an outer pin and socket locating means for locating and attaching the first and second flow separators to the first and second end covers, respectively; and wherein the first and second resilient disc each includes a hole therethrough juxtaposed with the outer pin and socket locating means. 35. The heat exchanger of claim 34, wherein the tubes are arranged in a predetermined pattern having adjacent straight rows of tubes and the first and second flow separator plates further comprise:an outer portion aligned with the shell central axis so as to be received in the channels; and an inner portion integral and in stepped relation with the outer portion transverse to the direction of the shell central axis, the inner portion being disposed between the adjacent straight rows of tubes so as to not obstruct tube coolant flow. 36. The heat exchanger of claim 25, wherein:A first tube header sealing means includes at least one first header O-ring sealingly juxtaposed between the first tube header periphery and the shell; the second tube header sealing means includes at least one second header O-ring sealingly juxtaposed between the second tube header periphery and the shell; the first end cover sealing means includes at least one first end cover O-ring sealingly juxtaposed between the first end cover and the shell; and the second end cover sealing means includes at least one second end cover O-ring sealingly juxtaposed between the second end cover and the shell. 37. A shell and tube heat exchanger for transferring heat between a shell coolant and a tube coolant, the coolants being carried by external conduits, the heat exchangers having first and second shell coolant passageways and first and second tube coolant passageways to conduct the coolants, the heat exchanger comprising:a shell, the shell having a central axis, the shell extending between opposite first and second ends, the shell having a wall extending around a periphery and defining a shell cavity therein, the first shell coolant passageway passing through the shell wall adjacent the shell first end, the second shell coolant passageway passing through the shell wall adjacent the shell second end, the shell having at least one threaded locating hole through the shell wall, the shell having a plurality of grooves within the shell cavity, the grooves being aligned with the shell central axis; a first tube header having an outer periphery, and a second tube header having an outer periphery, the first and second tube headers being spaced apart and generally parallel, at least one tube header periphery having a locating recess; a plurality of generally straight and parallel tubes extending between the first and second tube headers, the tubes having first and second open ends attached to and penetrating the first and second tube headers, respectively; wherein the first tube header, the second tube header, and the tube comprise a tube bundle, the tube bundle being removably received within the shell cavity with the first tube header adjacent the shell first end, and the second tube header adjacent the shell second end, the tube header locating recess being juxtaposed with the threaded locating hole; a locating screw extending between opposite proximal and distal ends, the locating screw threadably engaging the threaded locating hole, the locating screw proximal end engaging the locating recess, the locating screw being adapted to locate the tube bundle angularly about the shell central axis and longitudinally along the shell central axis in a predetermined alignment wit the shell, the locating screw being adapted to electrically ground the tube bundle to an external ground; at least one first header O-ring sealingly juxtaposed between the first tube header periphery and the shell for slideably sealing the first tube header to the shell, and at least one second header O-ring sealingly juxtaposed between the second tube header periphery and the shell for slideably sealing the second tube header to the shell; a first end cover removably attached to the shell first end, the first end cover having an inside surface, and a second end cover removably attached to the shell second end, the second end cover having an inside surface; at least one first end cover O-ring sealingly juxtaposed between the first end cover and the shell for sealing the first end cover to the shell, and at least one second end cover O-ring sealingly juxtaposed between the second end cover and the shell for sealing the second end cover to the shell; wherein the shell cavity includes a first chamber extending between the first tube header and the first end cover, and the shell cavity includes a second chamber extending between the second tube header and the second end cover, the first and second tube coolant passageways being in communication with the first and second chambers respectively, and the tube first and second open ends being in communication with the first and second chambers respectively, so as to allow passage of the tube coolant between the first and second chambers trough the tube; a first resilient disc disposed against the first end cover inside surface, the first resilient disc having a plurality of channels extending radially outward, and a second resilient disc disposed against the second end cover inside surface, the second resilient disc having a plurality of channels extending radially outward; a first flow separator removably received within the first chamber, the first flow separator having a plurality of plates, the plates extending radially from unitary proximal ends adjacent the shell central axis outward to distal ends adjacent the shell, the plates distal ends being received in the shell grooves, the plates extending axially from the first tube header to the first resilient disc wherein the plates are sealingly received in the channels; a second flow separator removably received within the second chamber, the second flow separator having a plurality of plates, the plates extending radially from unitary proximal ends adjacent the shell central axis outward to distal ends adjacent the shell, the plates distal ends being received in the shell grooves, the plates extending axially from the second tube header to the second resilient disc wherein the plates are sealingly received in the channels; an inner pin and socket locating means for locating and attaching the first and second flow separators to the first and second tube headers, respectively, and an outer pin and socket locating means for locating and attaching the first and second flow separators to the first and second end covers, respectively, wherein the first and second resilient disc each includes a hole therethrough juxtaposed with the outer pin and socket locating means; a first shell coolant receiver and a second shell coolant receiver, the first and second shell coolant receivers being juxtaposed with the first and second shell coolant passageways respectively, each shell coolant receiver having a central axis, a body extending between upper and lower ends, a circular bore passing through the body and in communication with the shell cavity, a saddle-shaped flange encircling the body, the flange closely conforming to the shell, the body lower end having a pilot penetrating the shell, the flange and body being bonded to the shell; a first shell coolant connector and a second shell coolant connector, each shell coolant connector having a central axis and a body extending between upper and lower ends, the body lower end having a pilot, the body upper end having a nozzle, the nozzle having an axis at an angle to the connector central axis of between zero and ninety degrees, the first shell coolant connector pilot being removably and rotatably received within the first shell coolant receiver bore, and the second shell coolant connector pilot being removing and rotatably received within the second shell coolant receiver bore, each shell coolant connector having a circular bore passing through the body and in communication with the respective shell coolant receiver bore; at least one first shell coolant connector O-ring sealingly juxtaposed between the first shell coolant connector pilot and the first shell coolant receiver bore for rotatably sealing the first shell coolant connector to the first shell coolant receiver; at least one second shell coolant connector O-ring sealingly juxtaposed between the second shell coolant connector pilot and the second shell coolant receiver bore for rotatably sealing the second shell coolant connector to the second shell coolant receiver; a first tube coolant receiver and a second tube coolant receiver, the first and second tube coolant receivers being juxtaposed with the first and second tube coolant passageways respectively, each tube coolant receiver having a central axis and a body extending between upper and lower ends, the first and second tube coolant receivers each having a circular bore passing through the body and in communication with the first and second chambers respectively; a first tube coolant connector and a second tube coolant connector, each tube coolant connector having a central axis and a body extending between upper and lower ends, the body lower end having a pilot, the body upper end having a nozzle, the nozzle having an axis at an angle to the connector central axis of between zero and ninety degrees, the first tube coolant connector pilot being removably and rotatably received within the first tube coolant receiver bore, and the second tube coolant connector pilot being removably and rotatably received within the second tube coolant receiver bore, each tube coolant connector having a circular bore passing through the body and in communication with the respective tube coolant receiver bore; at least one first tube coolant connector O-ring sealingly juxtaposed between the first tube coolant connector pilot and the first tube coolant receiver bore for rotatably sealing the first tube coolant connector to the first tube coolant receiver; at least one second tube coolant connector O-ring sealingly juxtaposed between the second tube coolant connector pilot and the second tube coolant receiver bore for rotatably sealing the second tube coolant connector to the second tube coolant receiver, so as to allow connection of the nozzles to the external conduits in any orientation; retaining means for retaining the connector pilot in the receiver bore, while allowing selective rotation of the connector about the connector central axis; wherein the shell is constructed of a non-metallic corrosion resistant material; and wherein the first and second tube headers and tubes are constructed of metal materials having efficient heat transfer properties.