International Journal of Agricultural Engineering

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Performance Evaluation of Fresnel Lens Concentrated Solar Water Heater Cum Distillation Unit


Affiliations
1 Department of Renewable Energy Sources, College of Technology and Engineering, Maharana Pratap University of Agriculture and Technology, Udaipur Rajasthan, India
2 Department of Renewable Energy Sources, College of Technology and Engineering, Maharana Pratap Universi ty of Agriculture and Technology, Udaipur Rajasthan, India
     

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A composite unit of Fresnel lens concentrated solar water cum distillation unit, having a capacity of 70 liters was developed to perform the functions of water heating and distillation. In this system two insulated tanks with glass cover were fabricated where one was used for water heating and the second tank was for condensation of water vapour. Solar energy concentrated by Fresnel lens was absorbed by the plate and surrounding water contained in water heating tank was heated by this absorber plate's heat through conduction. Water vapour from hot water was condensed in dehumidification tank by the comparatively colder surfaces of copper tube used to feed fresh water and top slanting glass surface. Condensed water was collected in a collection trough. Overall efficiency of solar water heater was found to be 42.38 per cent and 27.48 per cent for distillation unit. The final hot water outlet temperature was 65.12 and the yield of distilled water was 4.72 kg/m2/day. The total cost of the composite unit was Rs. 7524.

Keywords

Solar Water Heater, Solar Distillation, Dehumidification, Composite Unit
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  • Performance Evaluation of Fresnel Lens Concentrated Solar Water Heater Cum Distillation Unit

Abstract Views: 287  |  PDF Views: 0

Authors

P. M. Kapurkar
Department of Renewable Energy Sources, College of Technology and Engineering, Maharana Pratap University of Agriculture and Technology, Udaipur Rajasthan, India
A. K. Kurchania
Department of Renewable Energy Sources, College of Technology and Engineering, Maharana Pratap Universi ty of Agriculture and Technology, Udaipur Rajasthan, India

Abstract


A composite unit of Fresnel lens concentrated solar water cum distillation unit, having a capacity of 70 liters was developed to perform the functions of water heating and distillation. In this system two insulated tanks with glass cover were fabricated where one was used for water heating and the second tank was for condensation of water vapour. Solar energy concentrated by Fresnel lens was absorbed by the plate and surrounding water contained in water heating tank was heated by this absorber plate's heat through conduction. Water vapour from hot water was condensed in dehumidification tank by the comparatively colder surfaces of copper tube used to feed fresh water and top slanting glass surface. Condensed water was collected in a collection trough. Overall efficiency of solar water heater was found to be 42.38 per cent and 27.48 per cent for distillation unit. The final hot water outlet temperature was 65.12 and the yield of distilled water was 4.72 kg/m2/day. The total cost of the composite unit was Rs. 7524.

Keywords


Solar Water Heater, Solar Distillation, Dehumidification, Composite Unit