Technology for Hot Spring Cooling and Geothermal Heat Utilization: A Case Study for Balneology Facility
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Date
2023-03-23
Authors
Vondra, Marek
Buzík, Jiří
Horňák, David
Procházková, Michaela
Miklas, Václav
Touš, Michal
Jegla, Zdeněk
Máša, Vítězslav
0000-0002-9205-7586Advisor
Referee
Mark
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MDPI
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Abstract
Reducing energy costs in Europe is more challenging than before due to extreme price increases. The use of local renewable energy sources is one way to contribute to this effort. In the case of spa resorts, the use of heat from hot springs for therapeutic baths is an option. It is necessary to cool down this thermal mineral water to a temperature acceptable to the human body. However, due to the high mineral content of this water, heavy fouling can be a problem for conventional heat exchangers. The purpose of this study is to identify the suitable cooling technology in terms of required cooling capacity and waste heat recovery capability. The cooling technology was selected on the basis of a literature search. A pilot cooling unit consisting of vacuum cooler and plate heat exchanger was designed and tested in a real spa resort for six months. Both selected technologies have demonstrated the ability to cool thermal mineral water in long-term operation, as well as the possibility to utilize waste heat for domestic hot water heating. However, fouling problems occur in the plate heat exchanger. The vacuum cooler demonstrated greater operational robustness and resistance to encrustation.
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Peer-reviewed
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en