摘要
本文基于“广义压缩机”能量平衡法的现场性能测量方法,即将压缩机、油分离器及其回油回路等组件视为一个具备特殊卸载能力的“广义压缩机”,对上海某办公建筑用多联机的实际能耗进行了制冷季节的现场测试。结论表明:被测9套多联机的日能耗强度的平均数在0.05到0.28 kWh/m2之间。被测多联机在测试期的84天内,共计62天的EER高于额定能效比,占比达到74%,负荷率主要分布在0.4~0.9之间。可见,多联机具备良好的部分负荷特性,能够发挥其节能优势。
In this paper,the field performance measurement method based on the energy balance method of"generalized compressor"is proposed,which regard the components such as compressor,oil separator and its return oil circuit as a"generalized compressor"with special unloading ability.The field test of actual energy consumption of VRF in an office building in Shanghai is carried out in the cooling season.Results show that the average daily energy consumption intensity of the nine sets of multi split units tested was between 0.05 and 0.28 kWh/m2.During the 84 days of the test period,EER of 62 days was higher than the rated EER,accounting for 74%.The load rate was mainly distributed between 0.4 and 0.9.Obviously that the VRF systems has good partial load characteristics and more advantage on energy saving.
作者
许利峰
丁洪涛
张新刚
刘建涛
Xu Lifeng;Ding Hongtao;Zhang Xingang;Liu Jiantao(Center of Science and Technology&Industrialization Development,MOHURD,Beijing,100835;Qingdao Haier Air Conditioning Electronics Co.,Ltd.,Qingdao,266000)
出处
《建设科技》
2020年第16期69-72,77,共5页
Construction Science and Technology
关键词
多联机制冷性能
能量平衡法
refrigeration performance of VRV system
Energy balance method
