严寒地区某绿色建筑双源热泵系统运行性能分析及优化建议
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摘要
绿色建筑可再生能源系统应用广泛,实际效果却存在不匹配的问题。本文针对严寒地区某绿色建筑双源(地源、空气源)热泵系统一个供冷季和两个连续供暖季的不同运行模式进行实测,重点分析了采暖季不同运行模式下热泵系统能效比,对该双源热泵系统的性能匹配度做出评价。分析结果表明,当2017年空气源热泵未启动时,系统供热量相比2016年下降了40%,机组COP降低了22%,系统COP下降了27%。并且系统运行实测值相较于设计值的匹配度,低于2016年供暖季采用双源热泵系统运行时的匹配度。
the renewable energy system of green building was widely used, but the actual effect was not matched. The energy effciency ratio of the heat pump system under different operation modes in the heating season was analyzed, and the performance matching degree of the two-source heat pump system was evaluated. It was shown that the heat supply of the system decreased by 40 percent compared with 2016, the unit COP was reduced by 22 percent, the system COP was reduced by 27 percent when the air source heat pump was not started in 2017. And the measured value of the system operation was compared with that of the design value. The matching degree was lower than that of the dual-source heat pump system in the heating season of 2016.
the renewable energy system of green building was widely used, but the actual effect was not matched. The energy effciency ratio of the heat pump system under different operation modes in the heating season was analyzed, and the performance matching degree of the two-source heat pump system was evaluated. It was shown that the heat supply of the system decreased by 40 percent compared with 2016, the unit COP was reduced by 22 percent, the system COP was reduced by 27 percent when the air source heat pump was not started in 2017. And the measured value of the system operation was compared with that of the design value. The matching degree was lower than that of the dual-source heat pump system in the heating season of 2016.
引文
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[3]杨树彪,周念清.中国地源热泵发展历程分析[J].上海国土资源,2017,3(38):57-61.
[4]P Fleuchaus,P Blum.Damage event analysis of vertical ground source heat pump systems in Germany[J].Geothermal Energy,2017,5(1):10.
[5]刘玉峰.寒冷地区地源热泵系统冬季运行特性分析[J].制冷技术,2017,45(12):80-83.
[6]李先庭.实现冬夏季均高效运行的新型热泵系统--柔性热泵系统[J].暖通空调,2016,46(12):1-7.
[7]曾召田.运行模式对地埋管换热器热交换性能的影响试验[J].可再生能源,2016,34(5):737-744.
[8]高媛.基于冷热源辅助的地源热泵系统仿真及运行控制策略研究[D].山东:山东建筑大学,2017.
[9]张长兴.负荷侧回水温度控制在地源热泵供热中的应用研究[J].制冷学报,2014,35(5):19-24.
[10]赵双龙.重庆某办公楼地源热泵系统运行特性[J].暖通空调,2017,47(2):113-116.
[11]孙婉.地源热泵夏季运行地温场变化特性试验研究[J].同济大学学报(自然科学版),2016,44(7):1101-1106.
[12]严磊,胡平放.武汉市地源热泵示范项目测评研究分析[J].建筑科学,2014,30(12):25-29.
[13]潘登,茅靳丰.土壤源热泵在地下工程中空调工况运行实验研究[J].太阳能学报,2017,38(10):2785-2791.
[14]张智铭.办公建筑土壤源热泵系统节能运行策略研究[D].天津:天津大学,2015.
[15]Linhua Zhang,Huixing Fang.Energy-saving analysis of ground source heat pump combined with foor radiant air conditioning system[M].10th International Symposium on Heating,Ventilation and Air Conditioning,ISHVAC2017,19-22.
[16]《可再生能源建筑应用工程评价标准》[S].GB/T50801-2013.
[17]《建筑热环境测试方法标准》[S].JGJT 347-2014.
[18]杨灵艳,钱城.土壤源热泵系统能效提升要素分析[J].建筑节能,2016,44(304):1-4.
[19]《公共建筑节能设计标准》[S].GB50189-2005.