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A thermal bus is provided for cabinets housing high power electronics equipment that includes two spaced-apart horizontally oriented parallel evaporators interconnected in flow communication with a condenser. Each evaporator is mounted in a support having a central recess and each having a tube havi

A thermal bus is provided for cabinets housing high power electronics equipment that includes two spaced-apart horizontally oriented parallel evaporators interconnected in flow communication with a condenser. Each evaporator is mounted in a support having a central recess and each having a tube having a capillary wick disposed on an internal surface and being mounted within the central recess of the support. Each of the tubes includes a closed distal end and a closed proximal end with a liquid-working fluid entrance port located at the closed proximal end of the first tube and a vaporous-working fluid exit port located at the closed proximal end of the second tube. A duct defining a central passageway and having a capillary wick disposed on the walls of the central passageway is disposed in fluid communication with the first tube and the second tube. The condenser has a vaporous-working fluid entrance port disposed in flow communication with the vaporous-working fluid exit port of the evaporator and a liquid-working fluid exit port disposed in flow communication with the liquid-working fluid entrance port of the evaporator so that a working fluid cycles; (i) through the two spaced-apart parallel evaporators, and (ii) between the condenser and the two tubes.

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A thermal bus is provided for cabinets housing high power electronics equipment that includes two spaced-apart horizontally oriented parallel evaporators interconnected in flow communication with a condenser. Each evaporator is mounted in a support having a central recess and each having a tube havi

A thermal bus is provided for cabinets housing high power electronics equipment that includes two spaced-apart horizontally oriented parallel evaporators interconnected in flow communication with a condenser. Each evaporator is mounted in a support having a central recess and each having a tube having a capillary wick disposed on an internal surface and being mounted within the central recess of the support. Each of the tubes includes a closed distal end and a closed proximal end with a liquid-working fluid entrance port located at the closed proximal end of the first tube and a vaporous-working fluid exit port located at the closed proximal end of the second tube. A duct defining a central passageway and having a capillary wick disposed on the walls of the central passageway is disposed in fluid communication with the first tube and the second tube. The condenser has a vaporous-working fluid entrance port disposed in flow communication with the vaporous-working fluid exit port of the evaporator and a liquid-working fluid exit port disposed in flow communication with the liquid-working fluid entrance port of the evaporator so that a working fluid cycles; (i) through the two spaced-apart parallel evaporators, and (ii) between the condenser and the two tubes. IR) and butadiene rubber (BR) with at least 50 parts NR/IR, a carbon black content of 50 to 60 parts, 5 to 8 parts zinc oxide, 2 parts stearic acid, 1.5 parts aging protection agent and also at least 1 part vulcanization accelerator and sulfur, with the sulfur component including 4 to 5 parts, and wherein the carbon black comprises FEF-carbon black, which is capable of being sprayed, all of said parts being by weight. 7. A pneumatic vehicle tire in accordance with claim 1, wherein when measured at approximately two thirds of the sidewall height, and at the half sidewall height, the thickness of the at least one rubber reinforcing layer amounts to 12 mm with a tolerance of ±1.0 mm. 8. A pneumatic vehicle tire in accordance with claim 1, wherein when measured in the region of the maximum bead thickness (sidewall height W, measuring plane Y), the total thickness of the tire construction beneath the end of the at least one rubber reinforcing layer amounts to 18.5 mm with a tolerance of ±1.5 mm. 9. A pneumatic vehicle tire in accordance with claim 1, wherein the crown thickness amounts to 17.0±0.8 mm when measured at the tire center and the tire thickness amounts to 18.0±1.0 mm when measured in the transition region of the shoulder and in the region of the end of the at least one rubber reinforcing layer. ightly more than that required to balance the hydrostatic pressure of the casting pool and the mechanical friction involved in moving to casting rolls in biasing them toward each other such that a substantially constant gap is maintained between the rolls at the nip sufficient to provide separation between the solidified shells at the nip, wherein the biasing force is a force creating a roll separation force not greater than 0.35 kN, and passing molten metal between the solidified shells through the nip where at least a portion of said molten metal may be solidified in the strip below the nip. 10. A method as claimed in claim 9 comprising the additional steps of mounting at least one of the casting rolls on moveable roll supports to provide movement of the casting rolls toward each other, and applying said biasing force to the roll supports by a pair of biasing units. 11. A method as claimed in claim 10 comprising the additional steps of including in the biasing unit a trust generator acting between a thrust transmission structure connected to the roll supports, and including a thrust reaction structure generating a thrust on the roll support dependent on the spacing between the trust reaction structure and the thrust transmission structure. 12. A method as claimed in claim 11 wherein the thrust generator includes a compression spring or pressure fluid cylinder unit. 13. A method as claimed in claim 11 including the additional steps of: initiating casing of the strip with a gap between the rolls determined by the solidified shells being allowed to meet at the nip, allowing said casting roll to move relative to each other to follow strip thickness variation due to casting roll eccentricities, applying the same pattern of movement to the trust reaction structures of the biasing units to maintain said biasing force substantially constant with rotation of the casting rolls, increasing the gap between the casting rolls such that molten metal passes through the nip between the solidified shells in the strip, and continuing casting of the solidified strip with the increased gap held substantially constant while continuing to apply said pattern of movement to the thrust reaction structures to maintain a substantially constant roll biasing force. 14. A method as claimed in claim 13 wherein the increase in said gap is in the range of 0 to 50 microns. 15. A method as claimed in claim 13 wherein the increase in said gap is done by relative movement of the casting roll. rein a surface of said roll base has a surface roughness Ra of 0.03 to 8 μm; and wherein said surface layer has been disposed by a CVD or a PVD method. 10. A cooling roll according to claim 9, wherein the surface layer is formed of a plurality of layers with a thickness of 0.5 to 50 μm. 11. A cooling roll according to claim 2, wherein the surface layer has been manufactured without applying any machining on its surface. 12. A cooling roll according to claim 2, wherein the surface layer has been formed by a chemical vapor deposition (CVD) method or a physical vapor deposition (PVD) method. 13. A cooling roll according to claim 2, wherein a mean thickness of the surface layer is 0.5 to 50 μm. 14. A cooling roll according to claim 2, wherein a surface roughness Ra of the surface layer is 0.03 to 8 μm. 15. A cooling roll according to claim 2, wherein a radius of the cooling roll is 50 to 1000 mm.