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- 저자 : Et-tahir Ammari (검색결과 1 건)
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Et-tahir Ammari,Mounir Aksas,Abdelmoumene H. Benmachiche 대한설비공학회 2018 International Journal Of Air-Conditioning and Refr Vol.26 No.1
Solar absorption cooling technology has enormous potential for air-conditioning applications as the need for cooling coincides mostly with the availability of solar radiation. Due to the geographical nature and vast territory of Algeria and the presence of many isolated rural areas, there is a great need for autonomous systems that use only solar energy without auxiliary boiler to meet the cooling demand in summer. In this study, we propose a dynamic simulation model for solar autonomous absorption air-conditioning systems developed using the TRNSYS-EES software. The model used to study the feasibility and evaluate the functioning of the system under Batna, Algeria weather conditions. The proposed system uses solar thermal flat plate collectors to drive a small capacity single-effect LiBr/water absorption chiller to meet the cooling demand of a typical low-energy residential building covering a total floor area of 120 m2. A model of 4.5 kW commercial absorption chiller has been modeled with EES software. The validation results showed excellent agreement between the prediction and the experimental data (R 2 >0.988 R2>0.988) and proved the model ability to predict the performance of the chiller. The analysis of dynamic results indicates that the proposed system and selected size enable the chiller to work for a duration of up to 10 h a day. This allowed ensuring a sufficient and continuous cold water supply (between 8 ∘ ∘C and 18 ∘ ∘C) and maintaining the comfort temperature between 26 ∘ ∘C and 28 ∘ ∘C.
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