air exchange, natural ventilation, intermittent heating mode, EnergyPlus, energy saving


Modern results of Ukrainian buildings energy analysis show that 30-50% of the energy for heating goes to heat the supply air, and that is the largest share in the building energy balance. In terms of energy consumption, efficiency of the air exchange mode largely depends on occupancy schedule and air distribution in time and space. The application of air exchange schedule approach makes more sense in case when individual heating control is carried out. Therefore, during occupied hours, the comfortable ventilation level can be ensured, and, during unoccupied hours, it can be reduced to a minimum. According to the results of the study, the use of intermittent air exchange mode in the studied apartment on weekdays, leads to decrease in energy consumption compared to constant air exchange at the level of upper values of the ventilation schedule. In terms of energy efficiency, the use of the constant air change rate from ASHRAE Std 62 is the most efficient approach. In terms of indoor air quality and concentration of CO2 and VOCs, the scheduled air exchange approach with increased air change rates (from EN 16798) during occupied hours is more efficient. Therefore, the use of required and experimental air change rate values to create the hourly schedules allows to define more precisely a building energy consumption and to choose an optimal operation schedule for building engineering systems to provide thermal comfort and indoor air quality during occupied hours.


Földváry, V., Bekö, G., Langer, S., Arrhenius, K., Petráš, D. (2017) Effect of energy renovation on indoor air quality in multifamily residential buildings in Slovakia. Building and Environment.. Vol. 122. Pp. 363– 372.

Yoshinoa H., Hongb T., Nord N. (2017) IEA EBC annex 53: Total energy use in buildings ‒ Analysis andevaluation methods. Energy and Buildings, 152, 124–136.

Hong, T., Taylor-Lange, S. C., D’Oca, S., Yan, D., & Corgnati, S. P. (2016). Advances in research and applications of energy-related occupant behavior in buildings. Energy and Buildings, 116, 694–702.

Canha, N., Lage, J., Candeias, S., Alves, C., & Almeida, S. M. (2017). Indoor air quality during sleep under different ventilation patterns. Atmospheric Pollution Research, 8(6), 1132–1142.

Ren, Z., & Chen, D. (2015). Simulation of Air Infiltration of Australian Housing and its Impact on Energy Consumption. Energy Procedia, 78, 2717–2723.

Lu, D. B., & Warsinger, D. M. (2020). Energy savings of retrofitting residential buildings with variable air volume systems across different climates. Journal of Building Engineering, 30, 101223.

Experimental assessment of the impact of natural ventilation on indoor air quality and thermal comfort conditions of educational buildings in the Eastern Mediterranean region during the heating period. Journal of Building Engineering, 100917.

Simanic, B., Nordquist, B., Bagge, H., & Johansson, D. (2019). Indoor air temperatures, CO2 concentrations and ventilation rates: Long-term measurements in newly built low-energy schools in Sweden. Journal of Building Engineering, 25, 100827.

M Cehlin, T Karimipanah, U Larsson, A Ameen. (2019). Comparing thermal comfort and air quality performance of two active chilled beam systems in an open-plan office. Journal of Building Engineering, 100827.

Leivo, V., Prasauskas, T., Du, L., Turunen, M., Kiviste, M., Aaltonen, A., Haverinen-Shaughnessy, U. (2018). Indoor thermal environment, air exchange rates, and carbon dioxide concentrations before and after energy retro fits in Finnish and Lithuanian multi-family buildings. Science of The Total Environment, 621, 398–406.

P.F. Pereira, N.M. Ramos, R.M. Almeida, M.L. Simoes, E. Barreira, Occupant influence on residential ventilation patterns in mild climate conditions, Energy Procedia 132 (2017) 837–842 (11th Nordic Symposium on Building Physics, NSB2017, 11-14 June 2017, Trondheim, Norway).

ANSI/ASHRAE Standard 62.2-2019. Ventilation and Acceptable Indoor Air Quality in Residential Buildings, ASHRAE, Atlanta, Georgia.

ISSN 2308-7382 (Online)

Dr. Eng. Sc., Prof.,


Cand. Sc. (Eng.), Assoc. Prof.,

I. Sukhodub, Cand. Sc. (Eng.), Assoc. Prof., ORCID 0000-0002-5895-1306

ORCID 0000-0002-6640-103X

O. Yatsenko, Asst.

., ORCID 0000-0002-8001-5987

ISSN 1813-5420 (Print). Енергетика: економіка, технології, екологія. 2021. No 1

D. Zukowska, G. Rojas, E. Burman, G. Guyot, M. del C. Bocanegra-Yanez, J. Laverge, G. Cao, J. Kolarik, Ventilation in low energy residences–a survey on code requirements, implementation barriers and operational challenges from seven European countries, Int. J. Vent. (2020) 1–20

EN 16798-1, Energy Performance of Buildings ‒ Part 1: Indoor Environmental Input Parameters for Design and Assessment of Energy Performance of Buildings Addressing Indoor Air Quality, Thermal Environment, Lighting and Acoustics ‒ Module M1-6, European Standard, 2018.

Deshko V ., Bilous I., V ynogradov-Saltykov V ., Sukhodub I., Y atsenko O. Eksperimentalne doslidzhennya yakosti povitrya ta povitroobminu v zakladah osviti ta zhitlovih budivlyah. [Experimental study of air quality and air exchange in educational and residential buildings]. Vipusk No4 (148). Kyiv 2021, S. 25-37

Bilous, I.Yu., Deshko, V.I., Sukhodub, I.O. Building energy modeling using hourly infiltration rate. Magazine of Civil Engineering. 2020. 96(4). Pp. 27–41.

Ng, L., Persily, A., Emmerich, S. (2015) Improving infiltration modeling in commercial building energy models. Energy and Buildings, 88, 316–323.

Deshko V., Sukhodub I., Yatsenko O. (2020). Joint influence of intermittent heating mode and outdoor factors on apartment heat load. Collected scientific works of Ukrainian State University of Railway Transport, 191, 18-27.

DBN V.2.2-15:2019 Zhitlovi budinki. Osnovni polozhennya. [Chinnij z 01.12.2019]. K.: Ministerstvo regionalnogo rozvitku, budivnictva ta zhitlovo-komunalnogo gospodarstva Ukrayini, 2019. 44 s.