Combined absorption-desiccant solar powered air conditioning system

Aly, S.E.; Fathalah, K.A.

doi:10.1007/bf01637133

Cited by 15 publications

(6 citation statements)

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“…However, the combination of more than one of the previously mentioned solar sorption cooling technologies may contribute to an increase in the system's overall performance, providing lower air temperature values, in favour of energy and cost efficiency [44]. The potential of successfully operating a combined system of absorption and desiccant cooling cycle in hot-humid climates has been evaluated for enclosed spaces.…”

Section: Fig 7 Principle Of a Ventilation Desiccant Cooling System [mentioning

confidence: 99%

“…The potential of successfully operating a combined system of absorption and desiccant cooling cycle in hot-humid climates has been evaluated for enclosed spaces. With an overall coefficient of performance (COP) value equal to 1.55, this system can supply air temperatures of 23 o C, when the outdoor reaches 42 o C [44].…”

Section: Fig 7 Principle Of a Ventilation Desiccant Cooling System [mentioning

confidence: 99%

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Qatar 2022: Facing the FIFA World Cup climatic and legacy challenges

Sofotasiou

Hughes

Calautit

2015

Sustainable Cities and Society

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The 2022 World Cup creates great opportunities for the country of Qatar, but also poses significant challenges. In this study the main challenge of maintaining thermal comfort conditions within the football arenas is presented, with respect to the heat stress index (HSI) and the aero-thermal comfort thresholds established for opened stadiums. Potential cooling strategies for delivering tolerant comfort levels are introduced, followed by their functional strengths and limitations for the hot-humid climate of Qatar. An estimation of the cooling load for semi-outdoor stadiums in Qatar is also presented. The results, produced by dynamic thermal modelling, indicated that a load of 115 MW h per game should be at least consumed in order to provide both indoor and outdoor thermal comfort conditions. Finally, the use of solar energy technologies for the generation of electricity and cooling are evaluated, based on their viability beyond the 2022 World Cup event, towards the nation's targets for sustainability and lasting legacy. Highlights:• Provision of aero-thermal comfort conditions within the sport facilities.• Higher efficiency of solar sorption systems in hot-humid climates.• An estimated cooling load of about 115 MW h per game is required.• Balancing techniques to meet carbon neutrality commitment.• Forthcoming local and national community benefits.

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Section: Fig 7 Principle Of a Ventilation Desiccant Cooling System [mentioning

confidence: 99%

Section: Fig 7 Principle Of a Ventilation Desiccant Cooling System [mentioning

confidence: 99%

Qatar 2022: Facing the FIFA World Cup climatic and legacy challenges

Sofotasiou

Hughes

Calautit

2015

Sustainable Cities and Society

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“…Solar-powered air conditioning system was designed, installed and operated in Singapore (Bong, 1987 [4]). Aly and Fathalah (1988) [5] presented a combined absorption-desiccant high performance air conditioning system suitable for hot humid areas. Feasibility of utilizing solar power for comfort cooling in Hong Kong has been studied; a solar-powered absorption air conditioning system was designed and successfully constructed on the campus of the University of Hong Kong (Yeung, 1992 [6]).…”

Section: Introductionmentioning

confidence: 99%

Performance of Solar-Powered Air Conditioning System under AlMadinah AlMunawwarah Climatic Conditions

Qdah¹

2015

SGRE

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Nowadays, solar-powered air conditioning has witnessed an increased progress because air conditioning system is almost a must in every building in Saudi Arabia where the outside temperature in summer is higher than 42˚C. AlMadinah AlMunawwarah is one of the important holy places in the world, and therefore, this paper investigates the design and performance of solar-powered air conditioning system integrated with photovoltaic (PV) system which consists of PV panels, solar charger, inverter and batteries. This air conditioning system can be used in non-electrified areas near AlMadinah where the cost of electricity for this area is very high. The first step in this project is the cooling load calculations for the selected space that will be cooled and it was found about 1 ton refrigeration (3.52 kW). Based on this cooling load, the photovoltaic (PV) system has been estimated and built with the necessary connections. Data logging system has been used to measure the temperatures at the main components in the cycle like compressor inlet and outlet as well as evaporator and condenser. The input powers for the system as well as the coefficient of performance (COP) for the system under AlMadinah climatic conditions were measured along the day. The coefficient of performance varies from 2.16 to 4.22 for the system and these results compared with the conventional system performance with a good agreement.

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“…Sun powered air-conditioning procedure was once design, installed and operated in Singapore, (Bong, 1987 [3]). Ali and fathalah (1988) [4] awarded a joined absorption desiccant excessive performance air-conditioning system reasonable for sizzling muggy areas. Feasibility of utilising solar vigor for remedy cooling in Hong Kong has been studied, a solar powered absorption air-conditioning process used to be design and effectively constructed on the campus of the university of Hong Kong (yeung, 1992) [5]).…”

Section: Literature Reviewmentioning

confidence: 99%