Academic Journal
Investigation of the indoor air temperature in a civilian building after an emergency shutdown of the heating system
| العنوان: | Investigation of the indoor air temperature in a civilian building after an emergency shutdown of the heating system |
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| المؤلفون: | D. F. Karpov, M. V. Pavlov, E. V. Abramova, Kh. M. Vafaeva |
| المصدر: | Вестник Дагестанского государственного технического университета: Технические науки, Vol 51, Iss 2, Pp 197-207 (2024) |
| بيانات النشر: | Dagestan State Technical University |
| سنة النشر: | 2024 |
| المجموعة: | Directory of Open Access Journals: DOAJ Articles |
| مصطلحات موضوعية: | indoor air temperature, rate of temperature drop, thermal stability of room, specific thermal characteristics of room, heat accumulation coefficient, cooling rate indicator, regular thermal regime, emergency shutdown of heating system, Technology |
| الوصف: | Objective. An emergency shutdown of the heating system of a civil building will inevitably lead to a violation of the thermal regime in the heated rooms. Subsequently, this incident will have a negative impact on human thermal comfort and working conditions. Thus, the issue of predicting the thermal regime of a room in the event of a termination of the supply of thermal energy, along with the search for energy-saving technologies in the construction sector, is an urgent task.Method. Software calculations are based on the classical theory of thermal stability of a room in the case of intermittent heat supply and the law of regular thermal regime of the first kind (for a heating system), the essence of which is as follows: a decrease in temperature at all points of the body during its cooling occurs in the same way, obeying an exponential law.Result. For a room in a residential building, it is established that the indoor air temperature will reach the dew point (12.5 ℃) for a period of 8 hours 42 minutes after an emergency shutdown of the heating system, and the zero value after 23 hours 42 minutes. The average value of the rate of temperature drop over a period of 50 hours is 0.72 ℃⁄h, the total loss of thermal energy was 138.2 MJ. Conclusion. Thermal accumulation of enclosing structures plays a primary role for civil buildings in maintaining the required thermal regime of the room in the event of an emergency shutdown of the heating system. With a relatively low heat capacity and high heat transfer associated with the high temperature pressure of the heating elements, the cooling of the heating system occurs quite quickly (has a high cooling rate). |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | Russian |
| Relation: | https://vestnik.dgtu.ru/jour/article/view/1534; https://doaj.org/toc/2073-6185; https://doaj.org/toc/2542-095X; https://doaj.org/article/438a18c3e539454597c2b874d6b18762 |
| DOI: | 10.21822/2073-6185-2024-51-2-197-207 |
| الاتاحة: | https://doi.org/10.21822/2073-6185-2024-51-2-197-207 https://doaj.org/article/438a18c3e539454597c2b874d6b18762 |
| رقم الانضمام: | edsbas.BDDE6321 |
| قاعدة البيانات: | BASE |
| DOI: | 10.21822/2073-6185-2024-51-2-197-207 |
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