摘要
以泰安市某办公楼地源热泵系统为研究对象,通过对夏季运行工况的实时监测,得到地源侧出水温度、负荷侧回水温度、机组COP和机组制冷量随室外气温的变化特性。研究结果表明,地源侧出水温度波峰较室外气温波峰滞后22h;机组COP和机组制冷量不仅与室外气温有关,还与空调末端供冷需求有关,在供冷需求相同的情况下,室外气温每升高1℃,机组COP、制冷量升高2.5%;在室外温度相同的情况下,地源侧出水温度每升高1℃,机组COP降低5%。该研究结论为地源热泵空调系统的设计、节能运行提供了必要的参考。
Based on the real - time monitoring data from ground - coupled heat pump system（GCHPs） for an office building in Taihn, the variation characteristics of source side outlet water temperatures, load side inlet water temperatures, coefficient of performance （COP） and refrigerating capacity of heat pump unit with outdoor air temperature in summer were proposed. The peak values of source side outlet water temperatures were delayed by 22h than that of outdoor air temperature. Furthermore, COP and refrigerating capacity of heat pump unit were not only related with the outdoor temperature but also related with the real - time cooling load -demand, COP and refrigerating capacity respectively rose by 2.5% with 1℃ increase of outdoor air temperature corresponding to coincident cooling load -demand, and COP reduced by 5% with 1℃ increase of source side outlet water tem- perature corresponding to constant outdoor air temperature. The present conclusions may provide the support for design and energy - saving operation of GCHPs.
作者
刘玉峰
孔亚运
张长兴
Liu Yufeng Kong Yayun Zhang Changxing(College of Civil Engineering and Architecture, Shandong University of Science and Technology, Qingdao 266590, Chin)
出处
《低温与超导》
CAS
北大核心
2016年第9期90-94,共5页
Cryogenics and Superconductivity
基金
山东省高等学校科技计划项目(J16LG06)资助
关键词
地源热泵
土壤热物性
性能系数
运行特性分析
Ground - coupled heat pump system
Ground thermal properties
Coefficient of performance
Operating charac-teristic analysis
