Volume 3, 2018
|Number of page(s)||11|
|Section||Passive and Active Hybrid Approach to Building Designs|
|Published online||31 October 2018|
A parametric building energy simulation case study on the potential and limitations of passive design in the Mediterranean climate of Malta
Department of Environmental Design, Faculty for the Built Environment, University of Malta,
2 Institute of Building Technology and Energy, School of Engineering and Architecture, Lucerne University of Applied Sciences and Arts, Technikumstrasse 21, 6048 Horw, Switzerland
* e-mail: firstname.lastname@example.org
Accepted: 22 September 2018
The present case study sets out to investigate the potential and limitations of passive building design in a typical Mediterranean climate. The Maltese Islands were taken as the case study location. Assuming a fully detached, cuboid-shaped, generic multi-storey office building, one representative storey was modelled by means of the building energy simulation code WUFI®Plus. Thermal comfort was analysed based on the adaptive acceptable operative room temperature concept of EN 15251 for buildings without mechanical cooling systems. Assuming neither artificial heating nor cooling, the free-running operative room temperature was evaluated. By means of a parametric study, the robustness of the concept was analysed and the impact of orientation, window to wall area ratio, glazing, shading, thermal insulation, nighttime ventilation and thermal mass on the achievable level of thermal comfort is shown and discussed. It is concluded that in a well-designed building and by means of decent insulation (present case: Uwall = 0.54 W/(m2 · K)), double glazing, variable external shading devices and passive cooling by nighttime ventilation, a high level of thermal comfort is achievable in this climate using only very minor amounts of energy for artificial heating and cooling or possibly even none at all.
Key words: passive design / building energy simulation / nearly zero energy building (NZEB) / adaptive thermal comfort / nighttime ventilation / Mediterranean climate
© H. Manz et al., published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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