大功率CO_2热泵在寒冷地区的应用研究  

Research on Application of High Power CO_2 Heat PumpHot Water System in Cold Regions

作　　者：寇宏侨 罗会龙[1] 杜鸿儒[2] 杜培俭 郎峰 林辩启 

机构地区：[1]昆明理工大学建筑工程学院 [2]天津大学化工学院 [3]昆明东启科技股份有限公司

出　　处：《建筑热能通风空调》2017年第5期61-64,共4页Building Energy & Environment

基　　金：国家科技支撑计划项目(2012BAA13B02);云南省自然科学基金重点项目(2015FA018)

摘　　要："大温差小流量"的集中供暖方式不但能提高系统输送能力,还可以降低水力损失及减少电功率消耗。此外,由于CO_2工质在跨临界循环中有较高排气温度及温度滑移的特点,CO_2热泵在热水供暖领域具有独特优势。结合工程实例,采用"大温差小流量"的集中供暖方式,基于负荷计算及设备选型,本文设计了一种应用于寒冷地区的大功率CO_2热泵供热大温差小流量集中热水供暖系统。在寒冷地区的实际运行结果表明,大功率CO_2热泵供热集中热水供暖系统运行效果良好、性能稳定,并具有良好的节能效益与经济效益。The central heating system of ＂large temperature difference and low flow＂ could not only improve the system transmission capacity, but also reduce hydraulic losses and electric power consumption. According to the characteristics of high discharge temperature and temperature glide in trans-critical cycle of CO2, CO2 heat pump had a unique advantage in the field of hot water heating. In the light of engineering example, the central heating system of ＂low flow and large temperature difference＂ should be adopted. Based on the load calculation and equipment selection, this paper designed a high power CO2 heat pump hot water system by central heating of large temperature difference and low flow in cold regions. The practical result in cold regions showed that high-power CO2 heat pump hot water system by central heating is running good, stable performance, and has a good energy and economic benefits.

关 键 词：CO2热泵 集中供暖系统 大温差小流量 运行方式 性能分析 

分 类 号：TU832[建筑科学—供热、供燃气、通风及空调工程]