Szalay, Zsuzsa and Kiss, Benedek (2017) Dinamikus paraméterek az energiaigény számításában. 1. rész: Nettó fűtési energiaigény avagy szorozzunk-e hasznosítási tényezővel? MAGYAR ÉPÜLETGÉPÉSZET, 66 (9). pp. 20-27. ISSN 1215-9913
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Abstract
This paper compares the calculation of heating energy need according to the Hungarian official methodology used for the certification of buildings and the seasonal method in the EN ISO 13790 standard. Both methods have a similar structure, but the Hungarian method contains several simplifications. A major simplification is that dynamic parameters in the utilisation of heat gains are not calculated, but the utilisation factors are fixed values for two categories of buildings (lightweight and heavyweight). This paper analyses the error as a result of this simplification on an example residential and office building. To increase the number of cases, a Monte Carlo analysis is performed with varying parameters of the geometry of the building, the orientation, thermal transmittance, window-to-wall ratio, shading and internal heat capacity. According to the results, the Hungarian methods consequently overestimates the heating energy need by 3–4 kWh/m2a on average, which is acceptable for conventional buildings. However, for very low energy buildings with high internal heat gains it is advisable to calculate the utilisation factors according to the 13790 standard, as in this range the Hungarian method may underestimate the energy need.
| Item Type: | Article |
|---|---|
| Subjects: | T Technology / alkalmazott, műszaki tudományok > TH Building construction / mély-és magasépítés |
| Depositing User: | Dr. Zsuzsa Szalay |
| Date Deposited: | 29 Sep 2017 10:54 |
| Last Modified: | 29 Sep 2017 10:54 |
| URI: | http://real.mtak.hu/id/eprint/64348 |
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- Dinamikus paraméterek az energiaigény számításában. 1. rész: Nettó fűtési energiaigény avagy szorozzunk-e hasznosítási tényezővel? (deposited 29 Sep 2017 10:54) [Currently Displayed]
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