Technology for Hot Spring Cooling and Geothermal Heat Utilization: A Case Study for Balneology Facility

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...

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Bibliographic Details
Published in:Energies (Basel) 2023-04, Vol.16 (7), p.2941
Main Authors: Vondra, Marek, Buzík, Jiří, Horňák, David, Procházková, Michaela, Miklas, Václav, Touš, Michal, Jegla, Zdeněk, Máša, Vítězslav
Format: Article
Language:English
Subjects:
balneology
Body temperature
Case studies
Cooling
Czech Republic
Electricity
Energy conservation
Energy consumption
Equipment and supplies
Fouling
geothermal energy
Geothermal power
Health aspects
Heat
Heat exchangers
Heat recovery
Heating
High temperature
hot spring
Hot springs
Hot water heating
Household wastes
Mineral water
Plate heat exchangers
Renewable energy sources
Resorts
Resorts & spas
Spas
Swimming pools
Technology
thermomineral water
Vacuum
vacuum cooling
Waste heat
Water heating
Water springs
Water supply
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Summary: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.
ISSN:1996-1073
1996-1073
DOI:10.3390/en16072941