Heat exchange – With first fluid holder or collector open to second fluid
Patent
1990-06-06
1991-12-31
Davis, Jr., Albert W.
Heat exchange
With first fluid holder or collector open to second fluid
165113, 165146, 165144, 165151, 165150, 62507, F28F 1300, F28B 106
Patent
active
050763539
ABSTRACT:
A liquefier for the coolant in a vehicle air-conditioning system equipped with finned heat exchange tubes through which the coolant is conducted in cross-current to the inflowing ambient air. The heat exchange tubes are arranged in several rows of tubes disposed one behind the other in the direction of flow of the incoming ambient air with the respective heat exchange tubes being connected in cross-countercurrent flow. The rows of tubes are subdivided into several component groups (14, 16) which are arranged one behind the other in the direction of flow of the incoming ambient air, with their fin arrangements being decoupled with respect to thermal conduction. The component groups (14, 16) are connected in series with respect to the coolant and in countercurrent to the direction of flow of the incoming ambient air. According to the invention, adjacent component groups (14, 16) are mechanically connected with one another by way of their fin arrangement, but, in a connection zone between each two adjacent component groups (14, 16), the average thermal conductivity .lambda..sub.m lies below 20% of the thermal conductivity .lambda. of the material of the fin arrangement of the two adjacent component groups (14, 16).
REFERENCES:
patent: 2963277 (1960-12-01), Heller et al.
patent: 4691767 (1987-09-01), Tanaka et al.
patent: 4791984 (1988-12-01), Hatada et al.
Federal Republic of Germany Search Report for German Application No. P 39 18 455.2, filed Jun. 6th, 1989, dated Nov. 20th, 1989.
Davis Jr. Albert W.
Thermal-Werke Warme, Kalte-, Klimatechnik GmbH
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