Application of ORC in a Distributed Integrated Energy System Driven by Deep and Shallow Geothermal Energy
| Autor: | Yang Li, Jun Zhao, Chaofan Song, Yulie Gong, Hongmei Yin, Likai Hu, Yanping Du |
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| Rok vydání: | 2021 |
| Předmět: |
Technology
Thermal efficiency Control and Optimization Energy Engineering and Power Technology law.invention heat pump law Thermal Electrical and Electronic Engineering Process engineering efficiency improvement Engineering (miscellaneous) Geothermal gradient Renewable Energy Sustainability and the Environment business.industry Geothermal energy distributed integrated energy system Heating system Electricity generation ORC geothermal energy Environmental science Electricity business Energy (miscellaneous) Heat pump |
| Zdroj: | Energies Volume 14 Issue 17 Pages: 5466 Energies, Vol 14, Iss 5466, p 5466 (2021) |
| ISSN: | 1996-1073 |
| DOI: | 10.3390/en14175466 |
| Popis: | This study presents a distributed integrated energy system driven by deep and shallow geothermal energy based on forward and reverse cycle for flexible generation of cold, heat and electricity in different scenarios. By adjusting the strategy, the system can meet the demand of heat-electricity in winter, cool-electricity in summer and electricity in transition seasons. The thermodynamic analysis shows that the thermal efficiency of the integrated energy system in the heating and power generation mode is 16% higher than that in the cooling and power generation mode or the single power generation mode. Meanwhile, the annual heat-obtaining quantity of the system is reduced by 11% compared with that of the independent power generation system, which effectively alleviates the imbalance of the temperature field of the shallow geothermal reservoir. In terms of net power generation, the integrated energy system can generate approximately 31% more electricity than the conventional independent cooling and heating system under the same cooling and heating capacity. An integrated system not only realizes the comprehensive supply of cold and thermal ower by using clean geothermal efficiency, but also solves the temperature imbalance caused by the attenuation of a shallow geothermal temperature field. It provides a feasible way for carbon emission reduction to realize sustainable and efficient utilization of geothermal energy. |
| Databáze: | OpenAIRE |
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