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Calculating iso-PMV maps from view factors for composite room surfacesPrek, Matjaž ; Novak, Peter, 1937-2022The thermal comfort conditions in closed spaces are determined by air temperature as well as with mean radiant temperature. Radiant heat exchange between the body and room surfaces is particularly ... important in winter when there are pronounced temperature differences between heat sources and cold outer surfaces. In order to achieve optimal thermal conditions (expressed as predicted mean vote - PMV), the temperature balance between heat sources and sinks must be established. Several methods for determining the mean radiant temperature has been proposed. The most comprehensive, given in ISO standard 7726, involves a graphical or numerical procedure for calculating the view factors between the human body and a simple plane surface. In practice, this method becomes very complex, taking into account the influence of body posture and orientation with respect to composite room surfaces. A computer algorithm is, therefore, a very useful tool, particularly for the complex surface composition encountered in practical situations. The proposed algorithm is based on the computation of angle factors, which are additive. This algorithm enables calculations for composite room surfaces, even allowing for the complex impact of body posture. The matrix based approach allows us to determine the effect of various parameters on mean radiant temperature, as well as on PMV. A graphical rendering of an iso-PMV map is used for better visual interpretation of the results. This method presents a useful tool for determining the correct interplay between heating system and building structure, thus achieving the maximal possible thermal comfort area.Vir: Cold Climate HVAC 2000 : proceedings (Str. 601-606)Vrsta gradiva - prispevek na konferenciLeto - 2000Jezik - angleškiCOBISS.SI-ID - 4364059
Avtor
Prek, Matjaž |
Novak, Peter, 1937-2022
Teme
prenos toplote |
temperature zraka |
izvori toplote |
algoritmi |
študije case
Vnos na polico
Trajna povezava
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Baze podatkov, v katerih je revija indeksirana
Ime baze podatkov | Področje | Leto |
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Prek, Matjaž | 05574 |
Novak, Peter, 1937-2022 | 00956 |
Vir: Osebne bibliografije
in: SICRIS
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