Transient Energy Models of Housing Facilities Operation

Deshko, V.; Bilous, Inna; Biriukov, Dmytro; Yatsenko, Olena

doi:10.54740/ros.2021.038

Cited by 2 publications

(1 citation statement)

References 7 publications

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“…Концентрація вуглекислого газу визначалась на прикладі масового балансу репрезентативних приміщень в залежності від ряду параметрів, таких як: природний повітрообмін; фонова концентрація CO2 (зовнішня концентрація CO2); початкова концентрація CO2 в приміщенні; наявність людей; геометричні розміри приміщення. Методика обробки експериментальних результатів концентрації CO2 наведена в статті [21]…”

Section: рисунок 1 -план об'єкту дослідженняunclassified

Parametric Analysis of Natural Air Exchange in Multi-Apartment Residential Buildings

Deshko,

Bilous,

Hetmanchuk

2023

ENERHETYKA: ekonomika, tekhnolohiyi, ekolohiya

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Most multi-apartment residential buildings built in the 20th century in Central and Eastern Europe do not meet modern energy efficiency requirements. The main part of the thermal energy consumed by buildings is used to heat the supply air from outside, which is the largest share in the energy balance of buildings. The purpose of this research is a parametric analysis of influencing factors on the frequency of air exchange in the room and an experimental study of the concentration of CO2 in a typical apartment. The object of the study is a one-room apartment in a family-type dormitory in the city of Kyiv. The dormitory has ducted natural ventilation. In the work, experimental measurements of the concentration of carbon dioxide were carried out in the premises of the living room, kitchen, corridor of the apartment and in the ventilation channel in the summer period. The indicator gas method was used to measure the air exchange rate. During air infiltration, the average rate of air exchange in the absence of people in the apartment in the living room was 2.41 h-1, in the corridor - 2.34 h-1, in the kitchen - 0.57 h-1. Under exfiltration conditions, the average values were lower: living room – 0.24 h-1, corridor – 0.94 h-1, kitchen – 0.52 h-1. The dependence between wind directions and the phenomena of infiltration and exfiltration in the premises of the apartment was recorded. As a result of the research, it was established that the most influential parameter of the change in the concentration of CO2 in the room is the release from people's breath. It follows from the simulation results that to ensure the regulatory level of CO2 concentration is not higher 1500 ppm, it is necessary to observe the air exchange in the considered room not lower than the level of 1.51 h-1 for conditions when 2 people are constantly in the room That is, the mass balance of CO2, which takes into account the number of inhabitants, can be an attractive alternative method for predicting the intensity of ventilation of a building.

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Section: рисунок 1 -план об'єкту дослідженняunclassified

Parametric Analysis of Natural Air Exchange in Multi-Apartment Residential Buildings

Deshko,

Bilous,

Hetmanchuk

2023

ENERHETYKA: ekonomika, tekhnolohiyi, ekolohiya

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Energy Performance of Higher Education Institutions Buildings Operating During Quarantine Restrictions and/or Martial Law in Ukraine

Deshko,

Bilous,

Boiko

et al. 2024

Latvian Journal of Physics and Technical Sciences

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During the pandemic and periods of martial law, educational institutions in Ukraine implemented various forms of organising the educational process, combining in-person and remote classes. As a result, there has been a decrease in the level of use of building premises. The analysis of the characteristics of energy consumption in these conditions requires additional attention. In this study, a dynamic energy model of the building was created using the educational building of Igor Sikorsky Kyiv Polytechnic Institute as an example. Energy consumption for heating needs was determined for normal operating conditions and quarantine conditions in Ukraine (only a specific part of the premises is being operated, ensuring that the standard temperature value is maintained while people are present). Based on the results of the study, the features of the energy consumption of the building during quarantine/martial law restrictions, subject to the partial use of the building, were analysed, and the main disadvantages of such a mode were identified. For the educational building of the university, the total energy consumption for heating needs depends on the number of rooms that are actively used, and the modes of regulation of heating and ventilation; the consumption can decrease depending on the chosen scenario by 61 %, 56 %, and 34 % in quarantine mode. The findings indicate that the efficiency of regulation modes can decrease by more than four times when compared to normal mode due to internal heat exchange with unoccupied rooms.

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Transient Energy Models of Housing Facilities Operation

Cited by 2 publications

References 7 publications

Parametric Analysis of Natural Air Exchange in Multi-Apartment Residential Buildings

Parametric Analysis of Natural Air Exchange in Multi-Apartment Residential Buildings

Energy Performance of Higher Education Institutions Buildings Operating During Quarantine Restrictions and/or Martial Law in Ukraine

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