Energy system for nearly zero energy family buildings - Experience from operation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21720%2F20%3A00334831" target="_blank" >RIV/68407700:21720/20:00334831 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.egyr.2019.10.030" target="_blank" >https://doi.org/10.1016/j.egyr.2019.10.030</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.egyr.2019.10.030" target="_blank" >10.1016/j.egyr.2019.10.030</a>
Alternative languages
Result language
angličtina
Original language name
Energy system for nearly zero energy family buildings - Experience from operation
Original language description
Advanced concept of energy system for space heating, hot water preparation in new family buildings has been developed. Energy system consists of innovative heat pump (5.5 kW) extracting the heat from two environments: ground and ambient air. Heat pump is coupled with simple seasonal ground storage of heat built under the house and with photovoltaic system (6 kW) installed on the roof. In case of excess photovoltaic (PV) electricity in summer, the heat pump with variable speed compressor adapts its electric power to PV system power, extracts the heat from ambient air and transfers the heat into seasonal ground storage without external electric energy input. The ground storage is charged to 30 °C in upper level during the summer. In winter, heat pump uses the heat from ground storage and transfers it through the heat pump cycle for space heating with high effectivity. The experimental system has been installed in newly built house in Hamry (CZ) and it is operated for two seasons so far. Results from the monitoring show radical reduction of electricity use from external grid. System uses more than 80 % of energy from renewables. Specific non-renewable primary energy use for space heating, hot water preparation and auxiliary energy is about 15 kWh/m2 per year.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20704 - Energy and fuels
Result continuities
Project
<a href="/en/project/LO1605" target="_blank" >LO1605: University Centre for Energy Efficient Buildings – Sustainability Phase</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Energy Reports
ISBN
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ISSN
2352-4847
e-ISSN
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Number of pages
7
Pages from-to
117-123
Publisher name
ELSEVIER SCIENCE BV
Place of publication
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Event location
Atény
Event date
Sep 4, 2019
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000518453800013