单缸补气转子式压缩机在热泵系统中制热性能

发布时间：2018-06-04 02:13

本文选题：空气源热泵 + 补气　；参考：《化工学报》2017年09期

【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 k Pa、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。
[Abstract]:The single cylinder rolling rotor compressor is applied to the air source heat pump system by using the intermediate gas supply technology. The variation of the heating performance of the heat pump system with R410A as the refrigerant under the condition of variable frequency and variable supply pressure is systematically studied. The experimental results show that the heating capacity and system power of the intermediate gas supply system increase with the compressor frequency f, and the pinj of the intermediate air supply pressure increases linearly at the same frequency, and the system power increases linearly at the same frequency. With the increase of gas supply pressure and frequency, the relative growth rate of the heating capacity of the system decreases gradually. Compared with the single-stage compression system, the heating capacity and power of the intermediate gas supply system are 27.55 and 30.75 / 7.1in the range of 800 ~ 1200kPa ~ (5080) Hz, respectively, and the maximum increase of the heating capacity of the system is 27.55 ~ (30. 75) ~ (7. 1) in comparison with the single stage compression system, the maximum heating capacity and the maximum power of the gas supply system are 27. 55% and 30. 75% and 7. 1 Hz, respectively. With the increase of frequency and gas supply pressure, the COPh of the system decreases. Therefore, the intermediate gas supply technology should be combined with reasonable control strategy to achieve the purpose of energy saving and high efficiency.
【作者单位】：中国科学院广州能源研究所;中国科学院可再生能源重点实验室;广东省新能源和可再生能源研究开发与应用重点实验室;中国科学院大学;
【基金】：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)~~
【分类号】：TU83

【相似文献】