摘要
对夏热冬冷地区某住宅的空气源热泵空调器在降雪天气状况下的运行性能进行了实测研究。结果表明:制热量平均值较额定值下降约15%,瞬时值最大下降约30%;制热工况平均COP值为2.66,较额定值下降11.3%,包含除霜在内的运行周期平均COP值为2.37,较额定值下降20.9%,除霜耗电量为总耗电量的9.2%;不受结霜影响的瞬时制热量最大值达到额定值的94%～98%;室内机风速变化引起的制热量变化幅度约为4%。分析表明,室外机在结霜状况下工作是导致制热量及COP值下降的主要原因,先进的除霜方式是降低结霜对制热量的影响与提高运行能效的关键。
The operating performance of air source heat pump on snowy days for a residence in hot summer and cold winter areas was tested; the results show that when comparing to the rated heating capacity, the average of heating capacity falls 15 % and the droop rate of the maximum instantaneous valve can be up to 30 %. The average COP of heating conditions was 2.66 with a droop rate of 11.3% relative to the rated COP. The average COP of operation cycle containing defrosting was 2.37 with a droop rate of 20.9% relative to the rated COP. Power consumption of defrosting was 9.2% of the total power consumption. Without defrosting, the maximum of the instantaneous heating capacity was almost 94% -98% of the rated valve. Heating capacity changes caused by different wind speeds of indoor unit was about 4%. It＇ s proved that outdoor unit working in the frosting condition is the main reason of heating capacity and COP declining. The advanced defrosting measure is the key to diminish the influence of frosting and improve the operating efficiency.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2010年第12期1580-1584,共5页
Acta Energiae Solaris Sinica
基金
"十一五"国家科技支撑计划(2006BAJ01A05)
重庆大学高层次人才启动基金(0903005104986)
关键词
空气源热泵
夏热冬冷地区
极端天气
适应性
air source heat pump
hot summer and cold winter areas
extreme weather
adaptability
