Radiative Heat Transfer in Buildings
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F19%3APU139798" target="_blank" >RIV/00216305:26110/19:PU139798 - isvavai.cz</a>
Výsledek na webu
<a href="https://iopscience.iop.org/article/10.1088/1757-899X/603/2/022029/pdf" target="_blank" >https://iopscience.iop.org/article/10.1088/1757-899X/603/2/022029/pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1757-899X/603/2/022029" target="_blank" >10.1088/1757-899X/603/2/022029</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Radiative Heat Transfer in Buildings
Popis výsledku v původním jazyce
In the field of building physics, heat and moisture transports are often studied. These transports represent core problem in building performances. The heat transport is often investigated as heat conduction through building envelopes but the heat transfer inside buildings usually remains overlooked. The heat transfer in closed spaces may consist of conduction, convection and radiation. In thermal equilibrium, these transports compensate not only heat losses going through building envelopes but they may influence the temperatures of interior surfaces that occasionally suffer from the condensation of water vapors. So far, the thermal building technology has investigated heat losses prevalently as simple heat conduction through building envelopes along with ventilation (infiltration or exfiltration). Such an approximation avoids considering an alternative procedure taking into account direct radiative and convective heat flows from interior heating sources towards exterior spaces. For this purpose, it is necessary to have a computational formalism capable of determining the radiative heat flows established in interiors of buildings. The recent monographs provide such formalism only for gray or black bodies but not for their combinations. In this contribution, the general formalism for the computation of radiative heat flows between black and grey bodies is derived. The formalism consists of the system of equations specifying radiosities, heat fluxes and heat flows related to each surface of the interior. It is shown that this general system of equations may be reduced to two particular systems holding separately for black and grey bodies. In this way, the universality of the developed computational formalism is documented.
Název v anglickém jazyce
Radiative Heat Transfer in Buildings
Popis výsledku anglicky
In the field of building physics, heat and moisture transports are often studied. These transports represent core problem in building performances. The heat transport is often investigated as heat conduction through building envelopes but the heat transfer inside buildings usually remains overlooked. The heat transfer in closed spaces may consist of conduction, convection and radiation. In thermal equilibrium, these transports compensate not only heat losses going through building envelopes but they may influence the temperatures of interior surfaces that occasionally suffer from the condensation of water vapors. So far, the thermal building technology has investigated heat losses prevalently as simple heat conduction through building envelopes along with ventilation (infiltration or exfiltration). Such an approximation avoids considering an alternative procedure taking into account direct radiative and convective heat flows from interior heating sources towards exterior spaces. For this purpose, it is necessary to have a computational formalism capable of determining the radiative heat flows established in interiors of buildings. The recent monographs provide such formalism only for gray or black bodies but not for their combinations. In this contribution, the general formalism for the computation of radiative heat flows between black and grey bodies is derived. The formalism consists of the system of equations specifying radiosities, heat fluxes and heat flows related to each surface of the interior. It is shown that this general system of equations may be reduced to two particular systems holding separately for black and grey bodies. In this way, the universality of the developed computational formalism is documented.
Klasifikace
Druh
D - Stať ve sborníku
CEP obor
—
OECD FORD obor
20704 - Energy and fuels
Návaznosti výsledku
Projekt
<a href="/cs/project/GA13-03403S" target="_blank" >GA13-03403S: Morfologická analýza lomových povrchů a její důsledky pro stabilitu velkých civilně-inženýrských staveb</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2019
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název statě ve sborníku
IOP Conference Series-Materials Science and Engineering
ISBN
—
ISSN
1757-8981
e-ISSN
—
Počet stran výsledku
5
Strana od-do
1-5
Název nakladatele
IOP London
Místo vydání
London
Místo konání akce
Praha
Datum konání akce
17. 6. 2019
Typ akce podle státní příslušnosti
WRD - Celosvětová akce
Kód UT WoS článku
000562099100029