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Energies 2018, 11(5), 1265; https://doi.org/10.3390/en11051265

Economic and Environmental Analysis of Different District Heating Systems Aided by Geothermal Energy

Department of Cartographic and Land Engineering, University of Salamanca, Higher Polytechnic School of Avila, Hornos Caleros 50, 05003 Avila, Spain
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Received: 16 March 2018 / Revised: 4 May 2018 / Accepted: 10 May 2018 / Published: 15 May 2018
(This article belongs to the Special Issue Geothermal Energy: Utilization and Technology)
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Abstract

As a renewable energy source, geothermal energy can provide base-load power supply both for electricity and direct uses, such as space heating. Regarding this last use, in the present study, district heating systems aided by geothermal energy, the so-called geothermal district heating systems, are studied. Thus, three different options of a geothermal district heating system are evaluated and compared in terms of environmental and economic aspects with a traditional fossil installation. Calculations were carried out from a particular study case, a set of buildings located Province of León in the north of Spain. From real data of each of the assumptions considered, an exhaustive comparison among the different scenarios studied, was thoroughly made. Results revealed the most suitable option from an economic point of view but always considering the environmental impacts of each one. In this regard, the assumption of a district heating system totally supplied by geothermal energy clearly stands out from the rest of options. Thus, the manuscript main objective is to emphasise the advantages of these systems as they constitute the ideal solution from both the economic and environmental parameters analysed. View Full-Text
Keywords: geothermal energy; district heating systems; renewable energy; economic and environmental comparison geothermal energy; district heating systems; renewable energy; economic and environmental comparison
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Sáez Blázquez, C.; Farfán Martín, A.; Nieto, I.M.; González-Aguilera, D. Economic and Environmental Analysis of Different District Heating Systems Aided by Geothermal Energy. Energies 2018, 11, 1265.

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