Performance of a greenhouse heating system utilizing energy transfer between greenhouses based on the dual source heat pump

IF 6.1 2区 工程技术 Q2 ENERGY & FUELS Applied Thermal Engineering Pub Date : 2024-11-28 DOI:10.1016/j.applthermaleng.2024.125088
Baochang Zhou , Weituo Sun , Wenzhong Guo , Wengang Zheng , Mei Qu
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Abstract

High energy consumption challenges the multi-span greenhouse industry in China. To address this, a greenhouse heating system utilizing energy transfer between greenhouses based on the dual source heat pump (ETGHP) was designed in our previous research. However, its performance in practical application remains largely unexplored. This study conducted a field test to comprehensively assess this system. Results showed stable heating effects, and the heat collection of the system in Chinese solar greenhouse (CSG) air source heating mode accounted for 2.1% to 28.2% of the total, validating the feasibility of energy transfer between greenhouses. The use of CSG air source increased heating capacity by 27% and coefficient of performance (COP) by 23% for air source heat pumps. Then the dual source configuration achieved a 10.8% increase in heat collection and a 7.9% improvement in COP compared with the single air source. During the test, the COP of the system achieved 2.8 during heat collection and 2.5 for heating the multi-span greenhouse. Outdoor weather, greenhouse structures and management were found to influence system operation. This study also conducted performance comparation and explored the economic and environmental benefits for the system, proving it to be an efficient solution for multi-span greenhouse heating.
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基于双源热泵的温室供暖系统的性能分析
高能耗是中国多跨度温室产业面临的挑战。为了解决这个问题,我们在之前的研究中设计了一个基于双源热泵(ETGHP)的温室供暖系统。然而,其在实际应用中的性能仍未得到充分的研究。本研究通过现场试验对该系统进行了综合评价。结果表明,该系统采暖效果稳定,在中国太阳温室(CSG)空气源供暖模式下的集热量占总量的2.1% ~ 28.2%,验证了温室间能量传递的可行性。使用CSG空气源可使空气源热泵的供热能力提高27%,性能系数(COP)提高23%。与单气源相比,双气源配置的集热量增加了10.8%,COP提高了7.9%。在试验过程中,系统的集热COP达到2.8,多跨温室采暖COP达到2.5。室外天气、温室结构和管理都会影响系统的运行。本研究还进行了性能比较,探讨了该系统的经济效益和环境效益,证明该系统是多跨温室采暖的有效解决方案。
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IF 0 制冷与空调Pub Date : 2013-04-10 DOI: 10.6110/KJACR.2013.25.4.180
Hyoungsuk Woo, J. H. Ahn, M. Oh, Hoon Kang, Yongchan Kim
来源期刊
Applied Thermal Engineering
Applied Thermal Engineering 工程技术-工程:机械
CiteScore
11.30
自引率
15.60%
发文量
1474
审稿时长
57 days
期刊介绍: Applied Thermal Engineering disseminates novel research related to the design, development and demonstration of components, devices, equipment, technologies and systems involving thermal processes for the production, storage, utilization and conservation of energy, with a focus on engineering application. The journal publishes high-quality and high-impact Original Research Articles, Review Articles, Short Communications and Letters to the Editor on cutting-edge innovations in research, and recent advances or issues of interest to the thermal engineering community.
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