Investigation of operational performance of high power CO2 heat pump hot water system

doi:10.11949/j.issn.0438-1157.20150049

CIESC Journal ›› 2015, Vol. 66 ›› Issue (6): 2274-2279.DOI: 10.11949/j.issn.0438-1157.20150049

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Investigation of operational performance of high power CO₂ heat pump hot water system

LUO Huilong¹, LIN Bianqi¹, DU Peijian², YANG Xiaochuan², MA Ruifang¹, XIANG Kaigen¹

1. School of Civil Engineering, Kunming University of Science and Technology, Kunming 650500, Yunnan, China;
2. Kunming Dongqi Corporation of Science and Technology, Kunming 650106, Yunnan, China

Received:2015-01-13 Revised:2015-02-26 Online:2015-03-25 Published:2015-06-05
Supported by:
supported by the National Natural Science Foundation of China (51166005) and the National Key Technology Research and Development Program of China (2012BAA13B02).

大功率二氧化碳热泵热水系统运行性能

罗会龙¹, 林辩启¹, 杜培俭², 杨晓川², 马瑞芳¹, 向开根¹

1. 昆明理工大学建筑工程学院, 云南昆明 650500;
2. 昆明东启科技股份有限公司, 云南昆明 650106

通讯作者: 罗会龙
基金资助:
国家自然科学基金项目(51166005);国家科技支撑计划项目(2012BAA13B02)。

Abstract

Abstract:

A high power transcritical CO₂ heat pump hot water system was designed and built on the basis of the existing low power water heater. In order to improve system efficiency, two-stage gas cooler, dual capillary tube combination throttle and internal heat exchanger were used in the CO₂ heat pump hot water system. The effects of climatic and operational parameters on the steady state thermal performance of the CO₂ heat pump hot water system were tested and analyzed in the constant temperature environmental chamber. Test results under typical climate conditions showed that system performance was excellent. The CO₂ heat pump hot water system could provide 60—85℃ hot water according to climatic conditions, and its daily COP (coefficient of performance) was about 3.45—4.04 under the climatic conditions of ambient temperature at 4.1 to 27.3℃.

Key words: carbon dioxide, measurement, compressor, hot water system, thermal performance

摘要：

在小功率CO₂热泵热水器的基础上设计与构建了一种大功率跨临界循环CO₂热泵热水系统。在该跨临界循环CO₂热泵热水系统中, 采用二级冷却套管式CO₂气体冷却器、双毛细管并联组合节流及设置回热器等技术途径, 用以提高系统的热力性能。在恒温环境实验室中测试分析了气候参数及运行参数对跨临界循环CO₂热泵热水系统稳态热力性能的影响。各种典型气候条件下系统日平均运行性能的测试结果表明, 根据气候条件合理地选取运行参数, 该系统具有优良的热力性能。系统的制热温度可在60~85℃选取, 在环境温度为4.1~27.3℃的气候条件下日平均性能系数(COP)在3.45~4.04之间。

关键词: 二氧化碳, 测量, 压缩机, 热水系统, 热性能

CLC Number:

TK11+4

LUO Huilong, LIN Bianqi, DU Peijian, YANG Xiaochuan, MA Ruifang, XIANG Kaigen. Investigation of operational performance of high power CO₂ heat pump hot water system[J]. CIESC Journal, 2015, 66(6): 2274-2279.

罗会龙, 林辩启, 杜培俭, 杨晓川, 马瑞芳, 向开根. 大功率二氧化碳热泵热水系统运行性能[J]. 化工学报, 2015, 66(6): 2274-2279.

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Investigation of operational performance of high power CO₂ heat pump hot water system

大功率二氧化碳热泵热水系统运行性能

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