CO2 热泵低温环境应对技术.pdf

文档介绍：CO2 热泵低温环境应对技术

张信荣 1 杜培俭 2

(1 北京大学工学院能源与资源工程系北京 100871;
2 昆明东启科技股份有限公司昆明 650000)

摘要使用商用 CO2 冷媒热泵生产热水,可以为社会节约大量能源。CO2 冷媒在低温环境下具有优良特性,
CO2 热泵在低温环境也有极大的利用空间。本文针对 CO2 热泵在低温环境的运行,介绍了相关技术概要和
实际应对技术,包括 CO2 收集器技术、空气换热器技术等等。文章最后介绍了改良后的系统在云南的实际
运行情况,系统在低温环境下运行良好,各防冻技术有效。
关键词热泵低温环境 CO2 冷媒

CO2 HEAT PUMP TECHNOLOGIES COPING WITH LOW TEMPERATURE
ENVIRONMENT

Zhang Xin-Rong1 Du Pei-Jian2
( of Energy and Resources Engineering, College of Engineering, Peking University, Beijing, 100871, China;
Dongqi Technology Co., Ltd. , Kunming, 650000, China)

Abstract Using mercial CO2 refrigerant heat pump to produce hot water can save a lot of energy for the
community. CO2 refrigerant shows excellent characteristics at low temperatures, where CO2 heat pumps also have
great use of space. As for the operation of CO2 heat pumps in low temperature environment, we proposed the
related technical summary and the actual response techniques, including the technology of CO2 collector, the
technology of air heat exchanger, et al. Finally, we introduced the real operation situation of the improved heat
pump system experimented in Yunnan, which showed that the system worked well in low temperatures, and
the freezing techniques were effective.
Keywords Heat pump Low temperature environment CO2 refrigerant


CO 冷媒热泵热水器是利用夜间较便宜的电力生产