STUDY ON PERFORMANCE OF GROUNDWATER SOURCE HEAT PUMP SYSTEM WITH GRADED TREATMENT OF SUPPLY AIR

被引：0
|
作者：
Chen F. [1 ]
Tan Y. [1 ]
Li X. [1 ]
Wang L. [1 ]
Wang Z. [1 ]
Lian M. [1 ]
机构：
[1] Institute of Building Energy and Thermal Science, Henan University of Science & Technology, Luoyang
来源：
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2023年 / 44卷 / 06期
关键词：
energy consumption; graded treatment; groundwater source heat pump; precooler; steady-state model; supply air;
D O I：
10.19912/j.0254-0096.tynxb.2022-0223
中图分类号：
学科分类号：
摘要：
In view of the high energy consumption of conventional groundwater source heat pump with air-conditioning （CGWHP） system，a novel groundwater source heat pump system with graded treatment of supply air （NGWHP） system is proposed. The groundwater is used to pretreat fresh air and bear the condensation heat of heat pump units，so as to significantly reduce the energy consumption of heat pump units. The steady-state simulation mathematical model of NGWHP system is established by using thermal theory，and the program on the cooling performance of NGWHP and CGWHP systems is made in VC + + environment. The influences of groundwater on the performance of the two systems are compared and analyzed，and an experimental setup is built to verify the simulated values. The results show that the energy consumption of NGWHP system is significantly lower than that of CGWHP system. As the temperature of groundwater supply decreases or the flow rate increases，the energy consumption of the two systems shows a linear downward trend. When the groundwater temperature decreases from 24 ℃ to 15 ℃ with 33% fresh air fraction，the energy consumption of NGWHP system is 40.56% lower than that of CGWHP system on average. When the groundwater flow increases from 1800 kg/h to 2300 kg/h，the average energy consumption of NGWHP system is 42.27% lower than that of the CGWHP system. The experimental results are in good agreement with the simulation results，and the relative errors between the two results are in the range of ±13%. The results provide theoretical guidance for the optimization design and operation control of the NGWHP system. © 2023 Science Press. All rights reserved.
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页码：178 / 185
页数：7
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