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Article

Humidity-Sensitive, Demand-Controlled Ventilation Applied to Multiunit Residential Building—Performance and Energy Consumption in Dfb Continental Climate

Faculty of Building Services, Hydro and Environmental Engineering, Warsaw University of Technology, Nowowiejska 20, 00-653 Warsaw, Poland
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Energies 2020, 13(24), 6669; https://doi.org/10.3390/en13246669
Received: 16 November 2020 / Revised: 4 December 2020 / Accepted: 8 December 2020 / Published: 17 December 2020
(This article belongs to the Section F: Energy and Buildings)
Humidity-sensitive, demand-controlled ventilation systems have been in use for many years in regions with oceanic climates. Some attempts have been made to apply this technology in Poland, which has a continental climate. This article evaluates the performance and energy consumption of such a system when applied in an eight-floor, multiunit, residential building, i.e., the virtual reference building described by the National Energy Conservation Agency (NAPE), Poland. Simulations using the computer program CONTAM were performed for the whole heating season based upon the climate in Warsaw. Besides passive stack ventilation, that served as a reference, two ventilation systems were studied: one standard and one “hybrid” system with additional roof fans. This study confirmed that the application of humidity-sensitive, demand-controlled ventilation in multiunit residential buildings in a continental climate (Dfb) led to significant energy savings (up to 11.64 kWh/m2 of primary energy). However, the operation of the system on higher floors was found to be ineffective. Ensuring consistent operation of the system on all floors required supplementary fans. The introduction of a hybrid mode reduced carbon dioxide concentrations by approximately 32% in the units located in the upper part of the building. The energetic effect in such cases depends strongly on the electricity source. In the case of the national energy grid, savings of primary energy would be relatively low, i.e., 1.07 kWh/m2, but in the case of locally produced renewable energy, the energy savings would be equal to 5.18 kWh/m2. View Full-Text
Keywords: energy use; demand-controlled ventilation; hybrid ventilation; humidity; multiunit residential building; simulation; CONTAM energy use; demand-controlled ventilation; hybrid ventilation; humidity; multiunit residential building; simulation; CONTAM
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MDPI and ACS Style

Sowa, J.; Mijakowski, M. Humidity-Sensitive, Demand-Controlled Ventilation Applied to Multiunit Residential Building—Performance and Energy Consumption in Dfb Continental Climate. Energies 2020, 13, 6669. https://doi.org/10.3390/en13246669

AMA Style

Sowa J, Mijakowski M. Humidity-Sensitive, Demand-Controlled Ventilation Applied to Multiunit Residential Building—Performance and Energy Consumption in Dfb Continental Climate. Energies. 2020; 13(24):6669. https://doi.org/10.3390/en13246669

Chicago/Turabian Style

Sowa, Jerzy, and Maciej Mijakowski. 2020. "Humidity-Sensitive, Demand-Controlled Ventilation Applied to Multiunit Residential Building—Performance and Energy Consumption in Dfb Continental Climate" Energies 13, no. 24: 6669. https://doi.org/10.3390/en13246669

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