Impact of The Time Step Calculation On The Energy Performance Of Buildings
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F23%3A00370981" target="_blank" >RIV/68407700:21110/23:00370981 - isvavai.cz</a>
Result on the web
<a href="http://www.conference-cm.com/index.php?history=history14" target="_blank" >http://www.conference-cm.com/index.php?history=history14</a>
DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Impact of The Time Step Calculation On The Energy Performance Of Buildings
Original language description
The European Union's climate and energy policy has set up a series of objectives, for which reducing the energy performance of buildings plays a key role. Proper energy savings evaluation is an important chapter in this effort. According to Annex V to the Energy Efficiency Directive, one of the recognized methods for the evaluation of the impact of energy saving measures as well as in the design of new buildings is the ex-ante method. The ex-ante method is based on a theoretical calculation of the energy performance of the building and the determination of its future energy consumption. In the Czech Republic, the calculation with monthly steps was almost exclusively has been used until the end of 2022, but from the beginning of 2023 the calculation with hourly steps is in place. The aim of this work is to compare and analyze the differences that arise when calculating the energy performance of a building using monthly and hourly time steps, and to determine its impact on the possible achievement of energy consumption reduction targets and future planned energy efficiency requirements. The calculation is performed on selected building model based on the case study of the real planned residential project of new positive energy district using calculation software. The differences between hourly and monthly steps are then analyzed. The study results show a significant dependence of the resulting building theoretical energy balance on the climate and operational inputs used in the calculation. The hourly step has proven to be more accurate compared to the monthly step, better reflecting the flexibility of building use, but is highly dependent on the correct setting of operational input parameters and in the case of the design of new buildings, where design optimization is required, significantly increases the processing time.
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
20101 - Civil engineering
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Construction Maeconomics Conference (2023), Conference Proceedings
ISBN
978-80-01-07258-5
ISSN
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e-ISSN
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Number of pages
10
Pages from-to
52-61
Publisher name
České vysoké učení technické v Praze
Place of publication
Praha
Event location
Praha
Event date
Nov 2, 2023
Type of event by nationality
CST - Celostátní akce
UT code for WoS article
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