An energy-efficient air-conditioning system with an exhaust fan integrated with a supply fan

Wan, J.W.; Zhang, W.J.; Zhang, W.M.

doi:10.1016/j.enbuild.2009.07.032

Cited by 6 publications

(1 citation statement)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…5 Given that oil is a finite resource and climate change agreements may limit future exploitation, it is important for KSA to consider the adoption of energy efficiency measures and low carbon cooling strategies.Several studies have attempted to address this challenge by optimising the performance of Heating, ventilation, and air conditioning (HVAC) systems, however, the predicted savings were modest. [6][7][8] Fabric first thermal retrofitting strategies have been reported to have the potential to reduce cooling loads by between 20 and 35%. [9][10][11] Cooling techniques such as ground pipe supply ventilation, evaporative and night radiative cooling, have been evaluated by two studies in climatic zones where temperatures are moderate.…”

Section: Introductionmentioning

confidence: 99%

Displacing air conditioning in Kingdom of Saudi Arabia: An evaluation of ‘fabric first’ design integrated with hybrid night radiant and ground pipe cooling systems

Hijazi

Howieson

2018

Building Services Engineering Research and Technology

View full text Add to dashboard Cite

This paper presents an investigation into the viability of 'fabric first' intelligent architectural design measures, in combination with a hybrid cooling system (HCS). The specific aim is to displace AC and reduce CO2, while maintaining thermal comfort, in a typical housing block in KSA. The results of thermal modelling and prototype field trials suggest that passive design measures (PDMs) combined with night radiant cooling and supply ventilation via ground pipes, can negate the requirement for a standard AC system. Such a strategy may also have a remarkably short payback period when energy savings, in use, are set against the additional capital costs associated with improved building fabric performance. Practical application This study suggests that a significant proportion of AC cooling energy can be displaced by improving building fabric performance in combination with supply ventilation via ground pipes. As radiometer readings fell as low as 2.8°C when the night sky is clear, roof mounted high emissivity hydronic radiant panels can also provide a significant opportunity for additional heat flushing. In hybrid combination, these strategies have the potential to lower the carbon footprint of a typical housing block in KSA by over 80% and these measures and strategies will be equally applicable and costeffective in all geographic regions of the world where cooling loads represent the predominant domestic energy use.

show abstract