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中文摘要：
针对夏热冬冷地区冬季的典型气象条件下空气源热泵机组出现的“有霜不除”误除霜事故,本文进行了现场测试,揭示了机组在“温和、高湿”气象条件下的误除霜特性,并定量分析机组性能降低的程度.实验结果表明,在平均环境温度为4.1℃,相对湿度为75.4％的气象条件下,机组在12 h的运行中,一共除霜14次,每次除霜间隔为45 min,平均供热能力及平均供热效率分别为8.4 kW和61.8％.若除霜间隔为30 min,将会减少能耗15.4％,共61.8 MJ.
英文摘要：
To investigate the mal-defrosting of air source heat pump （ASHP） under the typical condition of hotsummer and cold-winter region,a field test was conducted in this paper.The field test results show that when the average temperature and humidity of the environment are about 4.1 ℃ and 75.4％,the tested ASHP unit totally defrosts 14 times during 12h,and the defrosting interval is 45min.During the 12h of operation,the average heating capacity and heating efficiency are 8.4kW and 61.8％,respectively.Under this typical condition,if the defrosting interval is 30min,it will reduce the energy consumption by 15.4％,a total of 61.8 MJ.
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