Heat Pump for Water Preparation in a Block of Flats
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21720%2F17%3A00318596" target="_blank" >RIV/68407700:21720/17:00318596 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Heat Pump for Water Preparation in a Block of Flats
Original language description
Recent trends in building construction in central Europe show a growing number of well insulated residential buildings. The heat demand for domestic hot water preparation is, in those applications, similar or higher than for space heating. Regular vapour compression heat pumps reach a relatively low SPF 2.5 in such applications. The way to increase SPF is to use a heat pump with multiple heat exchangers on the highpressure side (desuperheater, condenser, and subcooler) and a special hot water storage tank with three internal heat exchangers for good temperature stratification. A prototype of a heat pump with a desuperheater and subcooler was developed and a mathematical model of a refrigerant cycle was tested on it. The model of the heat pump describes the heating capacity and power input with an average relative deviation lower than 5 %. The validated model was used in simulations of a system for hot water preparation in a block of flats. The water draw in the simulation was set under the European standard and measured data from real applications. The results of simulations show SPF improvement by 26 % for a heat pump with a desuperheater and subcooler in comparison with a standard heat pump.
Czech name
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Czech description
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Classification
Type
J<sub>SC</sub> - Article in a specialist periodical, which is included in the SCOPUS database
CEP classification
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OECD FORD branch
20704 - Energy and fuels
Result continuities
Project
<a href="/en/project/ED2.1.00%2F03.0091" target="_blank" >ED2.1.00/03.0091: University center for energy Efficient buildings (UCEEB)</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Vytápění, větrání, instalace
ISSN
1210-1389
e-ISSN
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Volume of the periodical
26.
Issue of the periodical within the volume
6
Country of publishing house
CZ - CZECH REPUBLIC
Number of pages
9
Pages from-to
333-341
UT code for WoS article
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EID of the result in the Scopus database
2-s2.0-85040165284