Ventilation heat loss in a multifamily building under varying air density

• Autorzy: Michalak Piotr

Identyfikatory

DOI

10.30464/jmee.2020.4.1.97

• Języki publikacji: EN

Abstrakty

EN

Standards related to calculation methods used in building energy performance simulation tools usually impose constant volumetric heat capacity of air. However, this simplification may result in errors if the actual conditions differ from the assumptions made. The paper presents the problem of dry air density and specific heat capacity variation and their influence on calculated energy use for space heating in a multifamily building. The monthly calculation method of PN-EN ISO 13790 was used. Simulations were performed in five cities, each in one climatic zone according to PN-EN 12831. Variation of the air density caused by air temperature and elevation resulted in differences in calculated heating demand from -4.5% to 4.5% in relation to that at constant volumetric heat capacity assumed in PN-EN ISO 13790.

Słowa kluczowe

EN

air density; heat capacity; dry air; volumetric heat capacity; ventilation heat loss; EN ISO 13790; monthly method

PL

gęstość powietrza; pojemność cieplna; suche powietrze; objętościowa pojemność cieplna; wentylacyjna strata ciepła; EN ISO 13790

• Wydawca: Wydawnictwo Uczelniane Politechniki Koszalińskiej
• Czasopismo: Journal of Mechanical and Energy Engineering
• Rocznik: 2020
• Tom: Vol. 4, No 1
• Strony: 97--102
• Opis fizyczny: Bibliogr. 31 poz., rys., tab., wykr.

Twórcy

autor

Michalak Piotr

• Faculty of Mechanical Engineering and Robotics, Department of Power Systems and Environmental Protection Facilities, AGH University of Science and Technology, Mickiewicza 30, 30-059 Kraków, Poland

Bibliografia

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Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).