The influence of temperature on geothermal power plant performance based on geology in Huangshadong geothermal field, China

IF 1.1 4区工程技术 Q4 THERMODYNAMICS

Thermal Science Pub Date : 2023-01-01 DOI:10.2298/tsci221215079l

C. Luo, Lichang Huang, Jiawei He, Huiwen Huang, S. Cai

引用次数: 0

Abstract

The geological structure is rather complicated in Guangdong province, in China. The 10 deep fault belts are mainly oriented in NE. The NE fault belts are good channels for deep thermal energy upwelling, which can form a geothermal water reservoir zone. The heating of atmospheric precipitation and surface water by deep rocks is the primary formation mechanism for the hydrothermal resources in the Huangshadong geothermal field. The results show that the two-stage conversion system of flash-binary is more reasonable when the geofluid temperature is higher than 130oC. With every 10oC increment of geofluid temperature for flash-binary system, the power output and exergy efficiency increase by 21.6-38.7% and 6.0-13.1% respectively. The power output and exergy efficiency will decrease by about 20-40% when cooling temperature arising from 15 to 25oC. The research will provide the basic data for the demonstration of geothermal resource exploitation.

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基于地质的黄沙洞地热田温度对地热发电厂性能的影响

中国广东省地质构造较为复杂。10条深断裂带主要向北东向。北东向断裂带是深部热能上涌的良好通道，可形成地热储层。深层岩石对大气降水和地表水的加热作用是黄沙洞地热田热液资源的主要形成机制。结果表明，当地流体温度高于130℃时，闪二进制两级转换系统更为合理。闪烁二元系统地流体温度每升高10oC，输出功率和火用效率分别提高21.6 ~ 38.7%和6.0 ~ 13.1%。当冷却温度从15℃上升到25℃时，输出功率和火用效率将下降约20-40%。该研究将为地热资源开发论证提供基础数据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Thermal Science 工程技术-热力学

CiteScore

2.70

自引率

29.40%

发文量

399

审稿时长

5 months

期刊介绍： The main aims of Thermal Science to publish papers giving results of the fundamental and applied research in different, but closely connected fields: fluid mechanics (mainly turbulent flows), heat transfer, mass transfer, combustion and chemical processes in single, and specifically in multi-phase and multi-component flows in high-temperature chemically reacting flows processes present in thermal engineering, energy generating or consuming equipment, process and chemical engineering equipment and devices, ecological engineering, The important characteristic of the journal is the orientation to the fundamental results of the investigations of different physical and chemical processes, always jointly present in real conditions, and their mutual influence. To publish papers written by experts from different fields: mechanical engineering, chemical engineering, fluid dynamics, thermodynamics and related fields. To inform international scientific community about the recent, and most prominent fundamental results achieved in the South-East European region, and particularly in Serbia, and - vice versa - to inform the scientific community from South-East European Region about recent fundamental and applied scientific achievements in developed countries, serving as a basis for technology development. To achieve international standards of the published papers, by the engagement of experts from different countries in the International Advisory board.