Technical and economic analysis of a solar-assisted air-conditioning system
by Zouhour Sayadi; Mahmoud Bourouis; Ahmed Bellagi
International Journal of Renewable Energy Technology (IJRET), Vol. 4, No. 1, 2013

Abstract: This paper presents analysis aiming at assessing the feasibility and economic performance of a solar-assisted air-conditioning system for a middle class house under the climatic conditions of Tunis City. Two alternative cooling modes for the single effect water-lithium bromide absorption machine are considered, a water-cooling in association with a cooling tower and air-cooling. The numerical simulations show that for the water-cooling case, a solar system with 18 m² of evacuated tube collector area and a thermal storage tank of 1.3 m³ maintained at a temperature of 95°C can cover 50% of the energy needs of the machine. The corresponding optimal results for the air-cooled chiller are: energy needs coverage 40%, hot water tank capacity 1 m³ at 110°C, collector area 14 m². The annually total costs for the case of water-cooling and air-cooling are respectively 3.52 €/kWh and 2.51 €/kWh.

Online publication date: Thu, 30-Jan-2014

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