Paper Conference

Proceedings of BSO Conference 2014: 2nd Conference of IBPSA-England

     

MECHANICAL COOLING ENERGY REDUCTION FOR COMMERCIAL BUILDINGS IN HOT CLIMATES: EFFECTIVENESS OF COMBINED PASSIVE SYSTEMS

John Brittle, Mahroo Eftekhari, Steven Firth

Abstract: The aim of this work is to quantify the ability of passive systems combinations to reduce the mechanical cooling load in a case study commercial building in a hot climate. Results show that combination of double ventilated facade, external solar shading and rain screen facade is the most effective for Portugal and Kenya climates offering an annual cooling energy reduction of 35% and 21% respectively. For individual passive systems in hot climates, external solar shading is the most effective individual passive system providing a cooling potential 26% in Portugal and 14% in Kenya. As part of the passive system selection process, it is identified that direct solar radiation, external air temperature and mass flow rates of external air are major criterion for system selection.
Paper:
bso2014_12