Analysis and Comparison of Some Low-Temperature Heat Sources for Heat Pumps

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41310%2F19%3A79182" target="_blank" >RIV/60460709:41310/19:79182 - isvavai.cz</a>
Result on the web
<a href="https://www.mdpi.com/1996-1073/12/10/1853/htm" target="_blank" >https://www.mdpi.com/1996-1073/12/10/1853/htm</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/en12101853" target="_blank" >10.3390/en12101853</a>

Result language
angličtina
Original language name
Analysis and Comparison of Some Low-Temperature Heat Sources for Heat Pumps
Original language description
The efficiency of a heat pump energy system is significantly influenced by its low-temperature heat source. This paper presents the results of operational monitoring, analysis and comparison of heat transfer fluid temperatures, outputs and extracted energies at the most widely used low temperature heat sources within 218 days of a heating period. The monitoring involved horizontal ground heat exchangers (HGHEs) of linear and Slinky type, vertical ground heat exchangers (VGHEs) with single and double U-tube exchanger as well as the ambient air. The results of the verification indicated that it was not possible to specify clearly the most advantageous low-temperature heat source that meets the requirements of the efficiency of the heat pump operation. The highest average heat transfer fluid temperatures were achieved at linear HGHE (8,13 +/- 4,50 degrees C) and double U-tube VGHE (8,13 +/- 3,12 degrees C). The highest average specific heat output 59,97 +/- 41,80 W/m(2) and specific energy extracted fro
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20704 - Energy and fuels

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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