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对我国空气源热泵室外名义工况分区的思考
石文星,杨子旭,王宝龙
0
(清华大学建筑技术科学系)
摘要:
由于我国不同区域的气候特点和建筑的负荷特征不同,建筑需求冷热量差异很大,针对不同地区提供相应需求的空气源热源产品是推动空气源热泵技术进步和产业有序、健康发展的重要保障。本文基于我国气候特点、负荷特征和空气源热泵的特性,结合国内外空气源热泵标准的发展状况,阐述我国空气源热泵进行分区设计的必要性,并提出相应的室外侧名义工况分区方案。分析表明:我国不同气候区的空气源热泵的制热性能应采用不同的室外侧名义制热工况进行设计,但可采用统一的名义制冷工况确定其制冷性能;在此基础上,分析给出了适用于我国不同区域空气源热泵的室外侧名义制热与名义制冷工况,以及相应工况下的名义热冷比、压缩比与理论输气量的需求,为空气源热泵研发的技术路线选择提供参考。
关键词:  空气源热泵  名义工况  热冷比  压缩比  理论输气量
DOI:
投稿时间:2018-10-20修订日期:2018-12-15
基金项目:国家重点研发计划(2016YFC0700304)资助项目。
Division of Outdoor Nominal Condition of Air Source Heat Pumps in China
Shi Wenxing,Yang Zixu,Wang Baolong
(Department of Building Science, Tsinghua University)
Abstract:
Air source heat pump,as an important heating and air-conditioning equipment, is widely used in various types of buildings in China.The different climate and building load characteristics within different zones create a gap between the demand for coolingand heatingbecause China is a large country with several climate zones. Therefore, providing different air source heat source products for different zones becomes an important measure toward promoting the orderly and healthy development of air source heat pump technology and industry. Based on the air source heat pump characteristics, China’s climate and load characteristics, and development of Chinese and internationalstandards on air source heat pump, this study expounded the necessity of designing different air source heat pumps in different zones and proposed a corresponding plan. It is suggested that the heating performance of air source heat pumps in different climate zones in China should be designed with different outdoor heating conditions, i.e., nominalheating design conditions; nonetheless, the cooling performance can be determined by a uniform condition. On this basis, the nominal outdoor heating and cooling conditions, nominal heating/cooling ratio, and theoretical compression ratio and displacement of the air source heat pumps for different zones, as well as the development of the air source heat pumpwere analyzedin this study.
Key words:  air source heat pump  nominal condition  heating/cooling capacity ratio  compression ratio  theoretical displacement

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