摘要
在确保空气源热泵机组中涡旋压缩机稳定、可靠运行的前提下,对空气源热泵机组性能受运行环境的影响进行了研究。对涡旋压缩机、油分离器的运行机理进行了介绍,以实现对实验结果的机理解释。结果显示:在测试范围内,压缩机油槽内相对油位在0.65以上,完全满足压缩机润滑要求,且相对油位随着蒸发温度的升高、冷凝温度的降低而增大;由于蒸发温度、冷凝温度对压缩机功耗影响较小,因此,实验变量对设备制冷量、制热量的影响效果与其对能效比(EER)、性能系数(COP)的影响效果相近,即设备制冷量、制热量、EER、COP均随蒸发温度的升高、冷凝温度的降低而增大;制热工况下,进水温度、室内环温对设备性能的影响机制与冷凝温度的相近,均通过增加压缩机容积效率来强化设备性能,即设备制热量、COP同样随进水温度、室内环温的降低而增大。
Under the premise of ensuring the scroll compressor stability and reliability in the air source heat pump unit,influence of operation environment on the performance of air source heat pump unit was studied in the paper.In addition,the operation mechanisms of scroll compressor and oil separator were also introduced in the paper,to realize the mechanism analyses of experimental result.Results show that:the relative oil level in the compressor oil groove is above 0.65 within the test scope,which fully meets the lubricating requirement of compressor,moreover,the relative oil level increases with increasing evaporation temperature and decreasing condensation temperature;influence effects of experimental variables on the refrigeration capacity and heating capacity are similar to those of experimental variables on energy efficiency ratio(EER)and coefficient of performance(COP),due to the minor influence of evaporation temperature and condensation temperature on the compressor power consumption,and they all increase with increasing evaporation temperature and decreasing condensation temperature;influence mechanisms of inlet water temperature and indoor ambient temperature on the equipment performance are simi-lar to that of condensation temperature under the heating condition,which enhances the equip-ment performance by increasing the compressor volume efficiency,and heating capacity and COP also increase with decreasing inlet water temperature and indoor ambient temperature.
作者
司化
冯士伟
申道明
夏锦红
薛松涛
Si Hua;Feng Shiwei;Shen Daoming;Xia Jinhong;Xue Songtao(College of Civil Engineering and Architecture,Xinxiang University,Xinxiang 453000,China;Research institute of structural engineering and disaster reduction,Tongji university,Shanghai 200092,China;Department of Architecture,Tohoku Institute of Technology,Sendai,9828577,Japan)
出处
《低温工程》
CAS
CSCD
北大核心
2021年第5期46-51,67,共7页
Cryogenics
基金
国家自然科学基金(41877251)。
关键词
涡旋压缩机
油分离器
相对油位
制冷量
制热量
COP
EER
scroll compressor
oil separator
relative oil level
refrigeration capacity
heat-ing capacity
COP
EER
