空气源热泵与建筑耦合的变工况分析及优化  

Analysis and Optimization of the Coupling between Air-source Heat Pump and Building in Variable Operation Conditions

作　　者：李思慧 龚光彩[1] 周富玉 刘日明[1] Li Sihui;Gong Guangcai;Zhou Fuyu;Liu Riming(College of Civil Engineering,Hunan University,Changsha,410082,China)

机构地区：[1]湖南大学土木工程学院,长沙410082

出　　处：《制冷学报》2018年第5期112-120,共9页Journal of Refrigeration

基　　金：国家科技支撑计划(2015BAJ03B00)资助项目~~

摘　　要：由于目前设计人员对于空气源热泵性能的了解仅限于额定工况的制热量和COP,导致机组在夏热冬冷地区冬季工况的制热效果可能无法满足实际需求。本文建立热泵机组变工况产能输出、能效比模型及建筑冬夏季动态负荷需求模型,并将热泵产能输出和建筑负荷需求基于室内外温度和室外含湿量参数进行耦合,综合分析了室内外温度和室外含湿量等因素对热泵性能的影响,提出了空气源热泵选型的三个指标,即产能输出满足建筑负荷需求的稳定运行工况区间、最不利工况点的机组出力和能效比。该方法能够有效预测热泵选型实际性能和满足建筑负荷需求的程度,并优化风冷热泵选型方法和评价标准。Many designers simply take rated COP （coefficient of performance） and heating capacity into consideration in terms of the performance of air？source heat pumps, leading to an insufficient heating effect of pumps under low temperature conditions in a hot？summeand cold？winter zone. To solve this problem, this paper established three models of capacity output, energy efficiency ratio and dynamicload demand of buildings in summer and winter, and all the three models were tested in varying operation condition. Since the capacityoutput of heat pumps and load demand of buildings are coupled and influenced by indoor and outdoor temperature and outdoor humidity, acomprehensive analysis of factors including indoor and outdoor temperature and outdoor humidity on the heat pump performance were conducted. As a result, the paper introduced three indicators in selecting heat pumps, namely heat pump capacity output, energy efficiencyratio in the most unfavorable conditions and a stable operation conditions where the capacity output can satisfy the demand of buildings.With the operation method mentioned above, the actual performance of the selected heat pumps and the degree to which they satisfy thebuilding load demand can be effectively predicted. Meanwhile, the selection method and evaluation standard of air-source heat pump canbe greatly improved.

关 键 词：空气源热泵 热泵选型 变工况分析 耦合模型 

分 类 号：TB614[一般工业技术—制冷工程] TQ051.5[化学工程]