Refrigerant Line With Inner Heat EXCHANGER

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In this refrigerant line, the warm liquid refrigerant flowing on the high pressure side releases energy into the gaseous or vaporous cold refrigerant flowing on the low pressure side. This increases the cooling efficiency of the A/C system.

Fig 1: Identifying Refrigerant Pipe With Inner Heat Exchanger

Courtesy of AUDI OF AMERICA, LLC

NOTE:

This illustration shows a refrigerant line with an inner heat exchanger as it is installed on the Audi A4 from MY 2008 and on the Audi A5 Coupe from MY 2008. Refer to Refrigerant Circuit (vehicle-specific Service Information).

A - Refrigerant line with inner heat exchanger

B - Channels in the refrigerant line, in which the warm liquid refrigerant flows to the evaporator (refrigerant circuit high pressure side)

C - Channel in the refrigerant line, in which the gaseous or vaporous cold refrigerant flows to the A/C compressor (refrigerant circuit low-pressure side)