Abstract
The paper presents the results of a theoretical analysis of the low-temperature ORC power plant operation fed with hot water obtained in a hot dry rock (HDR) extraction system. Issues related to the energy content of the Earth interior and its resources are discussed. The principles of acquiring heat in HDR installation are described and examples of installations commissioned in Europe as well as around the world are presented. The appropriate locations for building HDR installations in Poland were also characterized. Presented also is the concept of the ORC power plant supplied with water heated in the HDR rock exchanger. The analysis and evaluation of the ORC/HDR power plant operation supplied with water with parameters possible to obtain in selected locations throughout the country was accomplished. It has been shown that it is possible to build an ORC power plant powered from the HDR resources.
Highlights
Among the so-called renewable energy sources an important one is the geothermal energy defined as the heat resource contained in the interior of the Earth, while the operational significance has the heat accumulated in the rocks forming the Earth's crust
Based on the assumed output data, the power and efficiency calculations of a hypothetical ORC power plant cooperating with the hot dry rock (HDR) system were made
The work discusses the principles of obtaining heat in HDR systems
Summary
Among the so-called renewable energy sources an important one is the geothermal energy defined as the heat resource contained in the interior of the Earth, while the operational significance has the heat accumulated in the rocks forming the Earth's crust. These rocks accumulate heat coming from the Earth's core, as well as the heat from radioactive elements decay processes. Petrothermal resources are considered as prospective source of heat, and of significant importance are energy resources accumulated in the so-called hot dry rocks
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