Exergy and exergoenvironmental assessment of a geothermal heat pump and a wind power turbine hybrid system in Shanghai, China

IF 2.9 2区地球科学 Q3 ENERGY & FUELS Geothermal Energy Pub Date : 2023-04-24 DOI:10.1186/s40517-023-00250-w

Yashar Aryanfar, Jorge Luis García Alcaraz

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Abstract

Geothermal heat pumps are one of the most growing and cost-effective renewable energy technologies based on the temperature difference between the ground and the environment. In the cold seasons, the temperature inside the soil or water is higher than the ambient temperature. Therefore, the heat pump is used to extract the warm temperature of the ground into the house or any other controlled space. In the summer, the air temperature is higher than the temperature of the soil or water. This temperature difference is used again to cool the house or any other environment. This paper examines the energy and exergy assessments of a hybrid system in Shanghai, China, that employs a geothermal heat pump with an economizer for winter heating and a wind turbine to provide clean electricity. The complete set of procedures, as well as every component and every aspect of the hybrid system, have all been carefully examined. The heat pump's coefficient of performance is 3.916, its net power output is 22.03 kW, its overall energy efficiency is 77.2%, and its exergy efficiency is 25.49%.

Graphical Abstract

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上海地热热泵与风力涡轮混合动力系统的能源与环境评价

地热热泵是基于地面和环境之间温差的最具增长和成本效益的可再生能源技术之一。在寒冷的季节，土壤或水的内部温度高于环境温度。因此，热泵用于将地面的温暖温度提取到房屋或任何其他受控空间。在夏季，空气温度高于土壤或水的温度。这种温差再次被用来冷却房屋或任何其他环境。本文考察了中国上海的一个混合系统的能源和能源评估，该系统采用带省煤器的地热热泵进行冬季供暖，并使用风力涡轮机提供清洁电力。整套程序，以及混合系统的每个部件和每个方面，都经过仔细检查。该热泵的性能系数为3.916，净功率输出为22.03 kW，综合能效为77.2%，火用效率为25.49%。图形抽象

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来源期刊

Geothermal Energy Earth and Planetary Sciences-Geotechnical Engineering and Engineering Geology

CiteScore

5.90

自引率

7.10%

发文量

审稿时长

8 weeks

期刊介绍： Geothermal Energy is a peer-reviewed fully open access journal published under the SpringerOpen brand. It focuses on fundamental and applied research needed to deploy technologies for developing and integrating geothermal energy as one key element in the future energy portfolio. Contributions include geological, geophysical, and geochemical studies; exploration of geothermal fields; reservoir characterization and modeling; development of productivity-enhancing methods; and approaches to achieve robust and economic plant operation. Geothermal Energy serves to examine the interaction of individual system components while taking the whole process into account, from the development of the reservoir to the economic provision of geothermal energy.