Original scientific paper
https://doi.org/10.13044/j.sdewes.d10.0419
Computational Approach to Predict Thermal Comfort Levels at Summer Peak Conditions in Passive House Based on Natural Ventilation
Ibrahim Alhindawi
; Physics Unit, School of Natural Science and the Ryan Institute’s Centre for Climate and Air Pollution Studies, Galway, Ireland (Republic)
Carlos Jimenez-Bescos
orcid.org/0000-0003-4261-3721
; Oslo Metropolitan University, Oslo, Norway
Abstract
The Passive House building concept has been widely-researched in relation to its performance, especially the aspects of energy consumption and thermal properties. Nevertheless, the design stages still do not present a dynamic thermal comfort predictive process that aids investigating the design performance. This research focuses on a methodology that calculates summer months peak conditions in a pilot Passive House dwelling in the United Kingdom, based on the natural ventilation plan effectiveness in maintaining sufficient airflows, while the mechanical ventilation-heat recovery summer bypass mode is on. The methodology’s technical aspect involves EnergyPlus dynamic simulations, Ansys computational fluid dynamics simulations, and the Centre for the Built Environment Thermal Comfort Tool. The results presented showed a spectrum of predicted percentages of people dissatisfied ranging between 13.3-99.2% for different airspeeds. The majority were of uncomfortable levels at summer peak days. Results also presents the ranges of thermal comfort parameters simultaneously. The findings produced by the methodology may add a more comprehensive description to the thermal comfort status during design stages, employing the integrated software combination.
Keywords
Passivhaus; Thermal comfort; Building simulations; PMV/PPD; Natural ventilation; Energyplus; CFD
Hrčak ID:
287177
URI
Publication date:
31.12.2022.
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