| 摘要: |
| 在热泵空调运行中，热泵空调水系统的输送能耗对整个系统节能降耗具有较大影响，因此大力发展冷却水大温差技术，有利于降低机组能耗。本文通过理论分析和推导得出热泵空调性能参数与冷却水温差之间的关系，并在不同冷却水温差实验工况时，分析了热泵空调制冷系统及冷却水泵的能耗。结果表明：随着冷却水温差的增大，虽然热泵空调主机单位制冷能耗逐渐增大，但热泵空调系统单位制冷能耗逐渐减小；在温差为8 ℃时，热泵系统EER最大，为3.173；冷却水温差为7~9 ℃时，机组节能效果显著。 |
| 关键词: 空调 冷机 实验工况 节能 |
| DOI： |
| Received:August 28, 2017 |
| 基金项目:上海市科技委能力建设计划项目（15110501000）资助。 |
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| Energy Consumption Analysis of Refrigeration System with Large Temperature Difference in Cooling Water |
|
Zhu Kaikai, Ren Jianxing, Zhang Junjie, Li Mengqi, Ma Libin, Wang Haiwen
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| (School of Energy and Mechanical Engineering, Shanghai University of Electric Power) |
| Abstract: |
| During operation, the energy consumption of an air conditioning system has a great influence on energy savings of the whole system. Therefore, the development of cooling water technology with a large temperature difference will help reduce energy consumption of air conditioning system. The relationship between the chiller parameters and temperature difference of cooling water is obtained through theoretical analysis and derivation in this paper. In different experimental conditions with different cooling water temperature difference, the energy consumption of the chiller and cooling water pump is analyzed. The results indicate that with an increase in the cooling water temperature difference, the energy consumption of the air-conditioning system decreases gradually, although the energy consumption of the chiller increases gradually. When the temperature difference is 8 ℃, the maximum EER of air conditioning system is 3.173. The energy saving effect of the air conditioning system is obvious when the cooling water temperature difference is 7-9 ℃. |
| Key words: air conditioning chiller experiment conditions energy saving |
