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

Chen Feng; Tan Yingying; Li Xiuzhen; Wang Lin; Wang Zhanwei; Lian Mengya

doi:10.19912/j.0254-0096.tynxb.2022-0223

PDF(1773 KB)

Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (6) : 178-185. DOI: 10.19912/j.0254-0096.tynxb.2022-0223

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

Chen Feng, Tan Yingying, Li Xiuzhen, Wang Lin, Wang Zhanwei, Lian Mengya

Author information +

History +

Abstract

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.

Key words

groundwater source heat pump / supply air / precooler / graded treatment / steady-state model / energy consumption

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

Chen Feng, Tan Yingying, Li Xiuzhen, Wang Lin, Wang Zhanwei, Lian Mengya. STUDY ON PERFORMANCE OF GROUNDWATER SOURCE HEAT PUMP SYSTEM WITH GRADED TREATMENT OF SUPPLY AIR[J]. Acta Energiae Solaris Sinica. 2023, 44(6): 178-185 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0223

References

[1] 王君, 余本东, 王矗垚, 等. 太阳能光伏光热建筑一体化(BIPV/T)研究新进展[J]. 太阳能学报, 2022, 43(6):72-78.
WANG J, YU B D, WANG C Y, et al.New advancements of building integrated photovoltaic/thermal system(BIPV/T)[J]. Acta energiae solaris sinica, 2022, 43(6): 72-78.
[2] 马利敏, 王怀信, 杨强. 高温热泵系统稳态仿真[J]. 太阳能学报, 2011, 32(8): 1144-1150.
MA L M, WANG H X, YANG Q.Steady state system simulation of high temperature heat pump[J]. Acta energiae solaris sinica, 2011, 32(8): 1144-1150.
[3] 徐成良, 雷艳杰, 张军, 等. 某地下水源热泵系统运行策略优化研究[J]. 制冷学报, 2018, 39(5): 72-76.
XU C L, LEI Y J, ZHANG J, et al.Research on operation strategy optimization of a groundwater source heat pump system[J]. Journal of refrigeration, 2018, 39(5): 72-76.
[4] RUSSO S L, GLENDA T, GIORGIA B, et al.Different design scenarios related to an open loop groundwater heat pump in a large building: impact on subsurface and primary energy consumption[J]. Energy and buildings, 2011, 43(2-3): 347-357.
[5] JONG M C.Study on the LWT control schemes of a heat pump for hot water supply[J]. Renewable energy, 2013, 54: 20-25.
[6] 李凤昱, 许天福, 封官宏, 等. T2Well单井地下水源热泵水-热耦合数值模拟研究[J]. 太阳能学报, 2020, 41(4): 278-286.
LI F Y, XU T F, FENG G H, et al.Simulation for water-heat coupling process of single well ground source heat pump systems implemented by T2Well[J]. Acta energiae solaris sinica, 2020, 41(4): 278-286.
[7] 汤志远, 丁国良. 涡旋式水源热泵系统性能仿真[J]. 制冷学报, 2011, 32(1): 33-37, 42.
TANG Z Y, DING G L.Performance simulation of scroll water source heat pump system[J]. Journal of refrigeration, 2011, 32(1): 33-37, 42.
[8] LEI Z, ZAHEERUDDIN M.Dynamic simulation and analysis of a water chiller refrigeration system[J]. Applied thermal engineering, 2005, 25(14-15): 2258-2271.
[9] 许金锋. 表冷器传热系数<inline-formula><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="Mml1-0254-0096-44-6-178"><mml:mi>k</mml:mi></mml:math></inline-formula>的数值分析与研究[D]. 上海: 同济大学, 2000.
XU J F.Numerical analysis and research on heat transfer coefficient <inline-formula><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="Mml2-0254-0096-44-6-178"><mml:mi>k</mml:mi></mml:math></inline-formula> of surface cooler[D]. Shanghai: Tongji University, 2000.
[10] 许阳阳. 电动汽车热泵空调系统的模拟研究[D]. 郑州:郑州大学, 2017.
XU Y Y.Simulation and research on electirc vehicle heat pump air conditioning system[D]. Zhengzhou: Zhengzhou University, 2017.
[11] 张峰. 小型蒸汽压缩式热泵系统仿真与实验研究[D]. 北京: 北京工业大学, 2004.
ZHANG F.Simulation and experimental study of small vapor compression heat pump system[D]. Beijing: Beijing University of Technology, 2004.
[12] 赵宗彬, 宋昱龙, 包继虎, 等. 跨临界CO₂空气源热泵系统性能研究[J]. 制冷学报, 2018, 39(2): 22-30.
ZHAO Z B, SONG Y L, BAO J H, et al.Research on system performance of air-source transcritical CO₂ heat pump[J]. Journal of refrigeration, 2018, 39(2): 22-30.
[13] 高建强, 张素丽, 武旭阳, 等. 以板式换热器为蒸发器和冷凝器的热泵系统仿真研究[J]. 发电设备, 2018, 32(4): 235-240.
GAO J Q, ZHANG S L, WU X Y, et al.Simulation study of a heat pump system with plate heat exchanger as the evaporator and condenser[J]. Power equipment, 2018, 32(4): 235-240.
[14] YAN Y Y, LIO H C, LIN T F.Condensation heat transfer and pressure drop of refrigerant R-134a in a plate heat exchanger[J]. International journal of heat and mass transfer, 1999, 42(6): 993-1006.
[15] MULEY A, MANGLIK R M.Experimental study of turbulent flow heat transfer and pressure drop in a plate heat exchanger with chevron plates[J]. Journal of heat transfer: transactions of the ASME, 1999, 121(1): 110-117.
[16] YAN Y Y, LIN T F, YANG B C.Evaporation heat transfer and pressure drop of refrigerant R134a in a plate heat exchanger[C]//ASME Turbo Asia Conference, Singapore, Singapore, 1997.