Feasibility Analysis of Air-turbo Cycle Heat Pump for Extremely Cold Regions
The climate in Antarctica is extreme,with temperatures plunging to-80℃ and an average low of around-40℃,posing a significant challenge to providing a suitable living environment for scientific expedition personnel.Traditional heating methods face challenges in such extreme conditions,particularly vapor compression heat pumps experiencing operational issues due to excessively low evaporating pressures at-40℃.This paper proposes the use of an air-turbo cycle heat pump as a solution.This heat pump utilizes air as the working fluid,transferring heat through gas compression and expansion without undergoing phase change,thereby eliminating issues related to low evaporating pressures.And the open air circulation can be easily switched to the fresh air mode.The results show that the air-turbo cycle heat pump fresh air system can still operate normally in the extremely cold temperature zone of-40℃,whose COP is more than 1.5.The advantages of air-turbo cycle heat pump include adapting to extreme low temperature,providing fresh air,using natural working medium without environmental pollution and leakage problems,simple and reliable system,low maintenance cost and so on.
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