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Influence of apartments’ modernization on the temperatures of heating system in the building

Abstract

When modernizing apartment buildings, heating appliances are replaced or old ones are left, high thermal temperatures are usually maintained, thus limiting the increase in the DH system’s efficiency. In the article, in order to evaluate the impact of the reduced thermal temperature of the building on space heating when the radiator area remains constant, 3 alternatives have been analyzed. They include cases when after the building modernization old heating appliances are left, but the temperature of the heat carrier is reduced up to 60/40/20 °C in one case or even up to 45/25/20 in another alternative. There has also been examined the possibility of reducing the heat carrier temperature of the heating system without modernization of the building. An hourly data analysis of the heating system model for two typical months of the heating season has been performed. The analysis shows that after the modernization of the building, when heating device areas are left the same, the existing heating temperature can be reduced to 60/40/2020 °C.


Article in Lithuanian.


Daugiabučio modernizavimo įtaka pastato šildymo sistemos temperatūroms


Santrauka


Modernizuojant daugiabučius pastatus, keičiant šildymo prietaisus ar paliekant senus, dažniausiai išlaikomos aukštos šilumnešio temperatūros, kurios apriboja centralizuotos šilumos tiekimo sistemos efektyvumo didinimą. Straipsnyje, siekiant įvertinti pastate sumažėjusios šilumnešio temperatūros įtaką patalpų šildymui, kai radiatorių plotas išlieka pastovus, buvo analizuojamos 3 alternatyvos: kai modernizavus pastatą paliekami seni šildymo prietaisai, bet žeminama šilumnešio temperatūra vienu atveju iki 60/40/20 arba kitu net iki 45/25/20. Išnagrinėta galimybė žeminti šildymo sistemos šilumnešio temperatūrą be pastato modernizavimo. Atlikta dviejų būdingų šildymo sezono mėnesių šildymo sistemos modelio valandinė duomenų analizė parodė, kad po modernizavimo pastate paliekant esamą šildymo prietaisų plotą, temperatūrą galima žeminti iki 60/40/20.


Reikšminiai žodžiai: centralizuotas šilumos tiekimas (CŠT), pastato modernizavimas, šildymo sistemos temperatūros žeminimas.

Keyword : district heating, modernization of building, reducing of temperature of building heating

How to Cite
Šiupšinskas, G., Bielskus, J., & Rogoža, A. (2021). Influence of apartments’ modernization on the temperatures of heating system in the building. Mokslas – Lietuvos Ateitis / Science – Future of Lithuania, 13. https://doi.org/10.3846/mla.2021.15275
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Nov 22, 2021
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