Building a Pilot Solar Integrated Complex to Produce Water, Electricity and Food for Rural and Remote Communities Part I: Solar Desalination

Khattab, N.M and Metawee, I.B. and El-Seesy, Ibrahim and Ebrahim, M.A. and El-Shenawy, E.T. (2014) Building a Pilot Solar Integrated Complex to Produce Water, Electricity and Food for Rural and Remote Communities Part I: Solar Desalination. World Applied Sciences Journal, 32 (2). pp. 169-176. ISSN 1818-4952

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Abstract|ملخص البحث

This paper presents the first part of results of a research project funded by the Science and Technology Development Fund (STDF) to build an optimized solar semi pilot co-generation integrated complex which would be used to provide families in farms simultaneously with electricity, water and food from one source of fuel (solar energy). The importance of this project lies in its two fold purposes; full use of recovered heat of the system and increase food yield per unit area of land and per cubic meter of irrigated water to save costs. The system size is designed for the use of a single family. It consists of a Green House (GH) of 50 m2 area. This GH used in winter for hydroponic cultivation which is characterized by its low water consumption for irrigation per day, (nearly between 100-150 liters per day ) and no need for soil. In summer, the GH is used for solar drying of agricultural products. A photovoltaic/thermal (PV/T) system is used to supply this complex with the necessary electricity (2 kW) for the family lighting and other requirements of water desalination and hydroponic irrigation. A heat recovery system is used to utilize the heat produced from cooling the PV through a heat exchanger. The collected heated water during day time is stored. A small solar thermal desalination unit is constructed to produce the necessary potable water for family drinking and hydroponic cultivation. Two modified continuous operation active solar stills are investigated to determine the most suitable system from the performance and cost points of view to be used in the complex. The two stills utilizes solar energy for water desalination during day time while utilizing heat energy stored in hot water resulting from PV cooling during night. The first design is of multi glass condensers solar still while the second is consisted from three stepped basins. Tests of the two are carried out under climatic conditions of Egypt (30° latitude). Results of the two stills yields are compared with each other and with that of simple basin type. Experimental results show that the yields of the two stills are 6.55 and 7.5 litres/m2/day when desalination is during day time only, while yields increase to 9.15 and 9.75 litres/m2/day for the two types, respectively as a result of using heat recovery system during night. The percentage increase of their yields than ordinary still is 103% and 116%, while percentage increase in costs are 42.8% and 51.4%, respectively.

Item Type|تصنيف النتاج العلمي: Article| منشور علمي
Subjects | مجال موضوع النشر: Chemical Engineering
Electrical Engineering
Mechanical Engineering
Divisions | الكلية: College Of Engineering > Mechanical Engineering
Depositing User: Ibrahim Elseesy
Date Deposited: 14 Feb 2019 07:05
Last Modified: 14 Feb 2019 07:05

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