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Deep Geothermal Energy Production in Germany
Open AccessArticle

Thermoeconomic Analysis of Hybrid Power Plant Concepts for Geothermal Combined Heat and Power Generation

Zentrum für Energietechnik, Universität Bayreuth, Universitätstrasse 30, Bayreuth 95447, Germany
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Energies 2014, 7(7), 4482-4497; https://doi.org/10.3390/en7074482
Received: 11 April 2014 / Revised: 20 May 2014 / Accepted: 1 July 2014 / Published: 14 July 2014
(This article belongs to the Special Issue Geothermal Energy: Delivering on the Global Potential)
We present a thermo-economic analysis for a low-temperature Organic Rankine Cycle (ORC) in a combined heat and power generation (CHP) case. For the hybrid power plant, thermal energy input is provided by a geothermal resource coupled with the exhaust gases of a biogas engine. A comparison to alternative geothermal CHP concepts is performed by considering variable parameters like ORC working fluid, supply temperature of the heating network or geothermal water temperature. Second law efficiency as well as economic parameters show that hybrid power plants are more efficient compared to conventional CHP concepts or separate use of the energy sources. View Full-Text
Keywords: geothermal; Organic Rankine Cycle; CHP; hybrid power plant geothermal; Organic Rankine Cycle; CHP; hybrid power plant
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Heberle, F.; Brüggemann, D. Thermoeconomic Analysis of Hybrid Power Plant Concepts for Geothermal Combined Heat and Power Generation. Energies 2014, 7, 4482-4497.

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