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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

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

  • 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

  • ISSN

    2352-4847

  • e-ISSN

  • Number of pages

    7

  • Pages from-to

    117-123

  • Publisher name

    ELSEVIER SCIENCE BV

  • Place of publication

  • Event location

    Atény

  • Event date

    Sep 4, 2019

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article

    000518453800013