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单缸补气转子式压缩机在热泵系统中制热性能
引用本文:孙晋飞,朱冬生,尹应德,李修真,涂爱民. 单缸补气转子式压缩机在热泵系统中制热性能[J]. 化工学报, 2017, 68(9): 3551-3557. DOI: 10.11949/j.issn.0438-1157.20170171
作者姓名:孙晋飞  朱冬生  尹应德  李修真  涂爱民
作者单位:1.中国科学院广州能源研究所, 广东 广州 510640;2.中国科学院可再生能源重点实验室, 广东 广州 510640;3.广东省新能源和可再生能源研究开发与应用重点实验室, 广东 广州 510640;4.中国科学院大学, 北京 100049
基金项目:中国南方智谷引进创新团队(顺府办函[2014]365号);广东省中国科学院全面战略合作专项项目(2013B091500042);2017年广州市产学研协同创新重大专项项目(201604016048,201604016069)。
摘    要:利用中间补气技术将单缸滚动转子式压缩机应用于空气源热泵系统中,系统地研究以R410A为冷媒的热泵系统在变频、变补气压力工况下制热性能的变化规律。实验结果表明:中间补气系统的制热量及系统功率均随着压缩机频率f、中间补气压力pinj的增加呈上升趋势,同频率下系统功率则以线性方式增长,而系统制热量随着补气压力及频率的增大,其相对增长率逐渐减小。因此COPh在低频时存在最佳补气压力,而在高频时无极值点;与单级压缩系统相比,在800~1200 kPa、50~80 Hz范围内,中间补气系统的制热量、功率、COPh最大提升分别为27.55%、30.75%、7.1%。随着频率及补气压力的增加,系统COPh下降,因此中间补气技术应与合理的控制策略相结合,可使中间补气系统达到节能高效的目的。

关 键 词:空气源热泵  补气  单缸滚动转子式压缩机  制热性能  变频  补气压力  
收稿时间:2017-02-22
修稿时间:2017-06-09

Heating performance of single cylinder vapor injection rotary compressor applying in air-source heat pump system
SUN Jinfei,ZHU Dongsheng,YIN Yingde,LI Xiuzhen,TU Aimin. Heating performance of single cylinder vapor injection rotary compressor applying in air-source heat pump system[J]. Journal of Chemical Industry and Engineering(China), 2017, 68(9): 3551-3557. DOI: 10.11949/j.issn.0438-1157.20170171
Authors:SUN Jinfei  ZHU Dongsheng  YIN Yingde  LI Xiuzhen  TU Aimin
Affiliation:1.Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, Guangdong, China;2.CAS Key Laboratory of Renewable Energy, Guangzhou 510640, Guangdong, China;3.Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, Guangdong, China;4.University of Chinese Academy of Sciences, Beijing 100049, China
Abstract:A novel single cylinder rotary compressor, which was increased a vapor injection hole near the discharge port, was adopted to improve the heating performance of a flash tank vapor injection air-source heat pump (FTHP) system at low ambient temperature. The effects of compressor frequency f and injection pressure pinj on system performances of a R410A FTHP system were measured and investigated systematically. The results showed that both heating capacity and power consuming of the FTHP system increased with increasing the compressor frequency and injection pressure. The FTHP system power consuming at fixed frequency increased linearly with increasing injection pressure. The increasing rate of FTHP system heating capacity declined as the frequency and injection pressure increased. Therefore, the heating COPh had a peak value at certain injection pressure when the frequency was low. After the peak point or at high frequency, the heating COPh decreased as the frequency and injection pressure increased. In the range of 800 kPa to 1200 kPa and 50 Hz to 80 Hz, the maximum improvement of the FTHP heating capacity, power consuming, and COPh were 27.55%, 30.75% and 7.1%, respectively, compared to the single stage compression system. In order to make the FTHP system efficiently, the control strategy must be optimized to keep the system operated at the optimum injection pressure and frequency.
Keywords:air-source heat pump  vapor injection  single cylinder rotary compressor  heating performance  variable frequency  injection pressure  
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