吨水耗电量在太阳能空气源热泵热水系统的应用  

Application of Power Consumption Per Ton of Water in Solar Collector Air⁃Source Heat Pump System

作　　者：韦古强 张荟文 崔宏 唐千喻 何子睿 刘广东 裴建军 WEI Guqiang;ZHANG Huiwen;CUI Hong;TANG Qianyu;HE Zirui;LIU Guangdong;PEI Jianjun(China Lvfa Investment Group Co.,Ltd.,Beijing 100010,China;Research Center of Architecture Energy Conservation,Tsinghua University,Beijing 100084,China)

机构地区：[1]中国绿发投资集团有限公司,北京100010 [2]清华大学建筑节能研究中心,北京100084

出　　处：《建筑节能（中英文）》2024年第2期10-16,共7页Building Energy Efficiency

基　　金：中国绿发投资集团有限公司科技项目“绿色地产生态低碳化开发运营模式研究”(529000210007)。

摘　　要：随着建设绿色低碳校园的理念提出,太阳能空气源热泵技术在高校得到了广泛应用。为了更好地分析和评价太阳能空气源热泵热水系统的节能降碳效果,以某高校宿舍楼为研究对象,设计了并联式太阳能空气源热泵(SC-ASHP)热水系统,分析了该系统的年实际运行情况,并与单一热泵(ASHP)热水系统的运行情况进行了对比研究。结果表明:该高校宿舍楼典型用水高峰期在18:00-22:00时,这有利于并联式太阳能空气源热泵热水系统在白天利用太阳能加热水箱,剩余不足部分由热泵进行补热。吨水耗电量可作为评价该热水系统运行效果的关键参数,并联式太阳能空气源热泵热水系统吨水耗电量y随环境温度T_a升高在逐渐降低,随进水温度T_(in)升高先减小后增大。在T_a和T_(in)都是11.5℃时,系统吨水耗电量达到最小值,这是因为当T_(in)>11.5℃时,不利于热泵凝汽器放热,热泵效率降低,热水系统吨水耗电量随之增大。并联式太阳能空气源热泵热水系统吨水耗电量整体低于单一热泵热水系统,其中热泵对系统吨水耗电量的影响最大。并联式太阳能空气源热泵热水系统比单一热泵热水系统年平均节省电量为4.18万kW·h,年平均降低CO_(2)间接排放量为41.67 tCO_(2),具有明显的节能降碳效果。With the concept of building a green low⁃carbon campus proposed,solar collector air⁃source heat pump technology has been widely used in universities.In order to better analyze and evaluate the energy conservation and carbon reduction effects of the solar collector air⁃source heat pump hot water system,a parallel solar collector air⁃source heat pump(SC⁃ASHP)hot water system for a university dormitory building is developed,the annual actual operation of this system is analyzed,and a comparative study with the operation of a single air⁃source heat pump(ASHP)hot water system is conducted.The results show that,the typical peak water consumption period of the dormitory building is from 18:00 to 22:00,which is favorable for the parallel solar collector air source heat⁃pump hot water system to use solar energy to heat the water tank in the daytime,and the remaining insufficient part is compensated by the heat pump.The power consumption per ton of water can be used as a key parameter to evaluate the operation effect of the hot water system.The power consumption per ton of water in the parallel solar collector air⁃source heat pump hot water system decreases gradually with the increase of ambient temperature Ta,and decreases first and then increases with the increase of inlet water temperature T_(in).When Ta and T_(in) are both 11.5℃,the power consumption per ton of water in the system reaches the minimum.This is because when T_(in)>11.5℃,it is not conducive to heat release of the heat pump condenser,the heat pump efficiency decreases,and the power consumption per ton of water in the hot water system increases accordingly.The power consumption per ton of water in the parallel solar collector air⁃source heat pump hot water system is generally lower than that in the single air⁃source heat pump hot water system,and the heat pump has the largest impact on the power consumption per ton of water in the system.Compared with the single air⁃source heat pump hot water system,the parallel solar collector air�

关 键 词：吨水耗电量 太阳能空气源热泵技术 热水系统 进水温度 节能效果 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]