| 摘要: |
| 本文建立了一套以R134a为制冷剂工质、以天然气为一次能源驱动开启式压缩机做功的燃气机热泵系统，研究了当蒸发器进水温度为12~22 ℃，室外环境温度为24.2~35.6 ℃，发动机转速为1 400~2 000 r/min，夏季冷热联供模式时，空气源燃气机热泵（GEHP）机组的性能。结果表明：发动机转速和蒸发器进水温度的变化对系统性能的影响大于室外环境温度变化的影响。随着发动机转速从1 400 r/min增至2 000 r/min，系统的COP1、COP2、PER1、PER2分别减小了15.5%、9.9%、18.8%、13.5%。在工况范围内，机组冷水出水温度可达6.7~19.3 ℃，热水出水温度可达40.7~61.7 ℃，考虑余热回收情况下系统的PER2可达1.14~1.45。 |
| 关键词: 燃气机热泵 供冷 生活热水 余热回收 节能 |
| DOI： |
| 投稿时间：2017-09-18
|
| 基金项目:天津市科技特派员项目（16JCTPJC52700）资助。 |
|
| Experimental Evaluation of a Gas Engine-driven Heat Pump System for Cooling and Domestic Hot Water |
|
Liu Fengguo1, Tian Zhongyun1, Dong Fujiang1, Cao Guanzhong2, Jia Leilei1, Yan Chao2
|
| (1.School of Energy and Safety Engineering, Tianjin Chengjian University;2.Qingdao Economic and Technology Development Zone Haier Water-Heater Co. Ltd.) |
| Abstract: |
| This paper establishes a set of gas-engine heat pump (GEHP) experimental systems with R134a as the refrigerant and natural gas as the primary energy source to drive the open compressor. The performance of a GEHP with cooling and hot water supply were tested with evaporator water inlet temperatures ranging from 12-22 °C, ambient air temperature ranging from 24.2-35.6 °C, and gas engine speeds ranging from 1400-2000 r/min. The results show that the effects of evaporator water inlet temperature and gas engine speed on the system performance were more significant than those of ambient air temperatures. As gas engine speed varies from 1400 r/min to 2000 r/min, the COP1, COP2, PER1, and PER2 of the system increases by 15.5%, 9.9%, 18.8%, and 13.5%, respectively. Within the range of working conditions, the average cooling water outlet temperature can reach 6.7-19.3 °C, the average hot water outlet temperatures can reach 40.7-61.7 °C, and the primary energy ratio (PER2) of GEHP system can reach 1.14-1.45 considering heat recovery. |
| Key words: gas engine-driven heat pump cooling domestic hot water heat recovery energy efficiency |
