What Kind of Heat Loss Requirements NZEB and Deep Renovation Sets for Building Envelope?
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F16%3A00243351" target="_blank" >RIV/68407700:21110/16:00243351 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21720/16:00243351
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
What Kind of Heat Loss Requirements NZEB and Deep Renovation Sets for Building Envelope?
Original language description
In most of countries the energy performance of buildings is defined as (primary) energy use of whole building’s (heating, cooling, ventilation, DHW, lighting, HVAC auxiliary, appliances), not as specific requirements for building envelope. For construction companies of production of modular renovation panels it in necessary to know heat loss properties of building envelope (U, W/(m2.K); Ψ, W/(m.K); χ, W/K; q50, m3/(h.m2)). In this study it is analyzed what kind of heat loss requirements exists for building envelope to meet on annual basis to following targets: nZEB i.e. national nearly zero energy definition; deep energy renovation with 80 % reduction of primary energy; ZEB i.e. net Zero Energy Building = the annual primary energy use = 0 kWh/(m(2) a). Indoor climate and energy calculations were made based on national energy calculation methodologies in six countries: Denmark, Estonia, Latvia, Czech Republic, Portugal, and Netherland. Requirements for heat loss of building envelope vary depending on requirements on indoor climate and energy performance in specific country, outdoor climate, availability of renewable energy, and building typology. The thermal transmittance of the modular wall panels for nZEB was ~5% from pre-renovation thermal transmittance in Latvia, ~10% in Estonia and up to 50% in Portugal. For roof the decrease of thermal transmittance was smaller mainly due to smaller thermal transmittance before renovation. Results show the difficulties to reach ZEB with multi-story apartment buildings in cold climate. There are not enough places to install renewables for energy production on site.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
JN - Civil engineering
OECD FORD branch
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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
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Central Europe towards Sustainable Building 2016 - Innovations for Sustainable Future
ISBN
978-80-271-0248-8
ISSN
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e-ISSN
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Number of pages
8
Pages from-to
137-144
Publisher name
GRADA PUBLISHING
Place of publication
Praha
Event location
Prague
Event date
Jun 22, 2016
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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