Project Report: Thermal Performance of FIRSTLIFE House

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F24%3A00378359" target="_blank" >RIV/68407700:21110/24:00378359 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21720/24:00378359

Result on the web

<a href="https://doi.org/10.3390/buildings14113600" target="_blank" >https://doi.org/10.3390/buildings14113600</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/buildings14113600" target="_blank" >10.3390/buildings14113600</a>

Result language

angličtina

Original language name

Project Report: Thermal Performance of FIRSTLIFE House

Original language description

The paper deals with selected thermal properties of a small building that was built during the international student competition Solar Decathlon 2021/2022 and is now part of the Living Lab in Wuppertal. It summarizes the essential information about the overall design of this wooden building with construction and technologies corresponding to the passive building standard. Built-in sensors and other equipment enable long-term monitoring of thermal parameters. Part of the information comes from the building operation control system. The thermal transmittance value for the perimeter wall matches calculated expectation well, even from a short period of time and not at an achievable perfectly steady state boundary condition. The (positive) difference between the calculated values and the measured ones did not exceed 0.015 W/(m2K). It was proven that even for such a small building with a very small heat demand, the heat transfer coefficient can be estimated alternatively from a co-heating test (measured electricity power for a fan heater) and from energy delivered to underfloor heating (calorimeter in heating system). Differences among both measurement types and calculation matched in the range ± 10%. In the last section, the dynamic response test is briefly described. The measured indoor air temperature curves under periodic dynamic loads (use of fan heater) are compared with the simulation results. The simulation model working with lumped parameters for each element of the building envelope was able to replicate the measured situation well, while its use does not require special knowledge of the user. In the studied case, the differences between measured and simulated air temperatures were less than 1 Kelvin if the first two to three days of the test period are ignored due to large thermal inertia. Finally, the measurement campaign program for the next period is outlined.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20102 - Construction engineering, Municipal and structural engineering

Project

<a href="/en/project/8J24DE009" target="_blank" >8J24DE009: Living Lab FIRSTLIFE</a><br>

Continuities

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

Publication year

2024

Confidentiality

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

Name of the periodical

Buildings

ISSN

2075-5309

e-ISSN

2075-5309

Volume of the periodical

14

Issue of the periodical within the volume

11

Country of publishing house

CH - SWITZERLAND

Number of pages

14

Pages from-to

—

UT code for WoS article

001366714300001

EID of the result in the Scopus database

2-s2.0-85210590297