Stack Ventilation Performance in a Semi-Detached House After Limiting Energy Consumption for Space Heating

Jan Dobkowski and Andrzej Gajewski ()
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Jan Dobkowski: Students’ Scientific Society “Heat Engineer”, Bialystok University of Technology, Wiejska 45E, 15-351 Białystok, Poland
Andrzej Gajewski: Department of HVAC Engineering, Faculty of Civil Engineering and Environmental Sciences, Bialystok University of Technology, Wiejska 45E, 15-351 Białystok, Poland

Energies, 2025, vol. 18, issue 17, 1-29

Abstract: Increasing requirements for reducing energy consumption result in window tightness, which decreases the air ventilation rate. This study examines the volume flow rate, stack pressure difference, and pressure losses for a one-person workroom of a semi-detached house under changing window tightness; the determination of the pressure losses and the uncertainty estimation of the examined quantities are described in full detail. The basic indoor air properties of relative humidity and density were determined only by readouts from a gauge and thermodynamic constants. One gauge with a vane probe measured the air velocity and temperature at a grille; a second gauge with an indoor air quality (IAQ) probe measured the mole fraction of carbon dioxide, temperature, absolute pressure, and humidity. The measurements were taken in ten one-week series throughout the year. Stack ventilation performance was good, as the IAQ satisfies the present requirements; however, the uncertainties sometimes exceeded the determined values significantly.

Keywords: Darcy–Weisbach equation; climate change; thermal comfort; stack pressure; pressure losses (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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