摘要
随着我国北方冬季雾霾的加剧,北方冬季供热的"煤改电"工程得到越来越多的关注。"煤改电"在经历了清洁不节能的电热设施直接供热阶段以后,转向清洁又节能的空气源热泵供热阶段。根据地区气候特征差异,在夏热冬冷地区(HSCW)推荐使用传统的单级压缩热泵结合小温差风机盘管末端供热;在寒冷地区(C)推荐使用补气增焓压缩热泵,末端使用小温差风机盘管或者地板辐射供热;在严寒地区(SC)推荐使用多级压缩热泵、复叠式热泵或跨临界CO_2与R134A复合热泵供热而使用新型双金属散热器、地板辐射供热或者小温差风机盘管将成为严寒地区的供热趋势。以上适用性技术与政策有效结合可以切实保证清洁供热的顺利推进。
With the more severe haze in winter in northern China,the“coal to electricity”project for heating is getting more and more attention.After the use of direct electric heating facilities,the“coal to electricity”project has now turned to clean and energy-saving air source heat pump heating.Due to the diverse weather features,the heat pump systems and terminals for heating could be with various forms.For the hot-summer and cold-winter zones,the conventional heat pump can meet the requirement of heating in winter and small temperature difference fan-coil units are selected as the suitable terminals.Vapor injection heat pump and radiant floor heating are recommended as the best heating combination in cold regions.Meanwhile in severe cold regions,the multi-stage compression heat pump,cascade heat pump and combined transcritical CO2and R134a heat pump systems are considered as the most favorable systems.New bimetal radiator,radiant floor heating and small temperature difference fan-coil unit may be the promising heating methods for severe cold regions.The above suitable technologies integrated with the proper policy may help to promote the development of clean heating in China.
作者
吴迪
胡斌
王如竹
杨国忠
骆名文
WU Di;HU Bin;WANG Ruzhu;YANG Guozhong;LUO Mingwen(Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, Shanghai 200240, China;Guangdong Midea Refrigeration Equipment Co., Ltd., Foshan, Guangdong, 528311, China)
出处
《制冷技术》
2017年第5期1-7,共7页
Chinese Journal of Refrigeration Technology
基金
基金项目:国家重点研发计划(No.2016YFB0601200)
关键词
“煤改电”
空气源热泵
小温差风机盘管
复叠式热泵
地板辐射供热
散热器
“Coal to electricity”
Air source heat pump
Small temperature difference fan-coil unit
Cascade heat pump
Radiant floor heating
Radiator
