A suction line heat exchanger (SLHX) transfers heat from the condenser outlet to the suction gas. In a TXV (thermostatic expansion valve) system, the performance improvement with a 60 to 80 % effective SLHX is expected to be on the order of 8 to 10 % for capacity, and 5 to 7 % for COP for high outdoor air temperatures of 43ºC. In a FOT (fixed orifice tube) system, the performance improvement was calculated to be about 10 to 15 %. The calculated improvements have been verified experimentally within a few percent.
R134A Suction Line Heat Exchanger in Different Configurations of Automotive Air-Conditioning Systems
Sae Technical Papers
Vehicle Thermal Management Systems Conference & Exposition ; 2001
2001-05-14
Conference paper
English
R134a suction line heat exchanger in different configurations of automotive air-conditioning systems
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