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A computer cooling system adapted to be installed in a drive bay of an existing computer casing to cool the inside of the casing. The cooling system includes a thermo-electric heat exchanger defining first and second superposed air channels respectively in heat transfer communication with the hot an

A computer cooling system adapted to be installed in a drive bay of an existing computer casing to cool the inside of the casing. The cooling system includes a thermo-electric heat exchanger defining first and second superposed air channels respectively in heat transfer communication with the hot and cold sides of Peltier devices. The cooled ambient air is discharged into the computer casing while the heated ambient air is directed into an evaporator for evaporating the condensate formed during cooling of the air discharged into the computer casing.

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A computer cooling system adapted to be installed in a drive bay of an existing computer casing to cool the inside of the casing. The cooling system includes a thermo-electric heat exchanger defining first and second superposed air channels respectively in heat transfer communication with the hot an

A computer cooling system adapted to be installed in a drive bay of an existing computer casing to cool the inside of the casing. The cooling system includes a thermo-electric heat exchanger defining first and second superposed air channels respectively in heat transfer communication with the hot and cold sides of Peltier devices. The cooled ambient air is discharged into the computer casing while the heated ambient air is directed into an evaporator for evaporating the condensate formed during cooling of the air discharged into the computer casing. second flux guides, wherein the tunnel junction valve and the first and second flux guides are located in between the two hard bias layers. 11. The magnetic tunnel head of claim 10, further comprising two insulating layers for providing electrical insulation for the two hard bias layers from the tunnel junction valve and the first and second flux guides. 12. The magnetic tunnel head of claim 11, further comprising two insulating layers for providing electrical insulation for the two hard bias layers from the second shield respectively. 13. The magnetic tunnel junction head of claim 1, wherein the second insulating layer is disposed between the first flux guide and the second shield. 14. The magnetic tunnel junction head of claim 1, wherein the tunnel junction valve comprises an antiferromagnetic (AF) layer; a ferromagnetic pinned layer having a magnetization fixed along a preferred direction by the antiferromagnetic layer; a ferromagnetic free layer having a magnetization controlled by the ferromagnetic pinned layer; and an insulating tunnel barrier located between the ferromagnetic pinned layer and the ferromagnetic free layer for permitting tunneling current in a direction perpendicular to the ferromagnetic pinned and free layers. 15. The magnetic tunnel junction head of claim 1, wherein the track width is between about 0.05 μm and about 0.1 μm. 16. The magnetic tunnel junction head of claim 1, wherein a cross-sectional area of the tunnel junction is inversely related to a resistance of the tunnel junction valve, wherein the resistance affects a noise level of the tunnel junction valve, and wherein a signal to noise ratio of the magnetic tunnel junction head is improved by optimizing the cross-sectional area to decrease the noise level of the tunnel junction valve. 17. The magnetic tunnel junction head of claim 1, wherein the first flux guide directs a magnetic flux from a magnetic recording medium to the tunnel junction valve, thereby enhancing a magnetic flux coupling to the tunnel junction valve. 18. A method for producing a magnetic tunnel junction head having a first flux guide defining an actual read track width comprising: a) making a tunnel junction valve having a first edge comprising a sensing surface; b) depositing a first flux guide proximate the first edge in a contiguous fashion without overlapping the valve and without a gap, wherein a width of a first portion of the first flux guide proximate the first edge is greater than a width of a second portion of the first flux guide proximate an air bearing surface of the tunnel junction head; and c) providing first and second insulating layers sandwiching the first flux guide; and d) providing first and second shields sandwiching the valve and the insulated first flux guide, wherein the insulating layers and the shields each has a surface portion that has a width defined by the width of the second portion and that proximate the air bearing surface. 19. The method of claim 18, wherein the first insulating layer is deposited between the first flux guide and the valve. 20. The method of claim 18, further comprising a step of depositing a second flux guide in proximity to a second edge of the valve, the second edge is farther from the air bearing surface than the first edge, wherein the valve is between the first and the second flux guides. 21. The method of claim 20, further comprising a step of depositing two hard bias layers, wherein the tunnel junction valve and the first and second flux guides are located between the two hard bias layers. 22. The method of claim 21, further comprising a step of depositing two insulating layers for providing electrical insulation for the two hard bias layers from the tunnel junction valve and the first and second flux guides. 23. The method of claim 22, further comprising steps of depositing two insulating layers for providing electrical insulation for the two hard bias layers from the second shield. 24. The method