Heat Pump for Water Preparation in Block of Flats

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21720%2F17%3A00316376" target="_blank" >RIV/68407700:21720/17:00316376 - isvavai.cz</a>

Výsledek na webu

<a href="http://hpc2017.org/wp-content/uploads/2017/05/O.1.7.3-Heat-pump-for-block-of-flats.pdf" target="_blank" >http://hpc2017.org/wp-content/uploads/2017/05/O.1.7.3-Heat-pump-for-block-of-flats.pdf</a>

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Heat Pump for Water Preparation in Block of Flats

Popis výsledku v původním jazyce

Recent trends in a building construction in the central Europe show a growing number of well insulated residential buildings. The heat demand for a domestic hot water preparation is in those applications similar or higher than for the space heating. Regular vapor-compression heat pumps reach relatively low SPF 2.5 in such applications. The way to increase SPF is to use a heat pump with multiple heat exchangers on a high-pressure side (desuperheater, condenser, and subcooler) and a special hot water storage tank with three internal heat exchangers for a good temperature stratification. A prototype of a heat pump with desuperheater and subcooler was developed and a mathematical model of a refrigerant cycle was tested on it. The model of heat pump describes a heating capacity and a 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. A water draw in the simulation was set under European standard and measured data from real applications. Results of simulations show improvement of SPF by 26 % for a heat pump with desuperheater and subcooler in comparison with a standard heat pump.

Název v anglickém jazyce

Heat Pump for Water Preparation in Block of Flats

Popis výsledku anglicky

Recent trends in a building construction in the central Europe show a growing number of well insulated residential buildings. The heat demand for a domestic hot water preparation is in those applications similar or higher than for the space heating. Regular vapor-compression heat pumps reach relatively low SPF 2.5 in such applications. The way to increase SPF is to use a heat pump with multiple heat exchangers on a high-pressure side (desuperheater, condenser, and subcooler) and a special hot water storage tank with three internal heat exchangers for a good temperature stratification. A prototype of a heat pump with desuperheater and subcooler was developed and a mathematical model of a refrigerant cycle was tested on it. The model of heat pump describes a heating capacity and a 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. A water draw in the simulation was set under European standard and measured data from real applications. Results of simulations show improvement of SPF by 26 % for a heat pump with desuperheater and subcooler in comparison with a standard heat pump.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20704 - Energy and fuels

Projekt

<a href="/cs/project/ED2.1.00%2F03.0091" target="_blank" >ED2.1.00/03.0091: Univerzitní centrum energeticky efektivních budov (UCEEB)</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of 12th IEA Heat Pump Conference

ISBN

978-90-90-30412-0

ISSN

—

e-ISSN

—

Počet stran výsledku

13

Strana od-do

—

Název nakladatele

The IEA Heat Pump Programme

Místo vydání

Montreal, Quebec

Místo konání akce

Rotterdam

Datum konání akce

15. 5. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—