An underground probe for a heat pump system evaporator has an outer tube and an inner tube into which a perforated spiral tube releases the fluid for recirculation through a heat exchanger

摘要

The heat pump system has a compressor (9) and evaporator heat exchanger (6) in which a liquid is circulated through a perforated spiral tube (17) in the inner tube (14) to flow back through the heat exchanger through the primary tube (3).