This is a performance model of the Air Gap Membrane Distillation (AGMD) Assisted by Solar Pond and PV system. Membrane distillation (MD) is a thermally driven separation program in which separation is enabled due to phase change. A hydrophobic membrane displays a barrier for the liquid phase, allowing the vapor phase (e.g. water vapor) to pass through the membrane's pores. The driving force of the process is given by a partial vapor pressure difference commonly triggered by a temperature difference. In air-gap MD, the evaporator channel resembles that in DCMD, whereas the permeate gap lies between the membrane and a cooled walling and is filled with air. The vapor passing through the membrane must additionally overcome this air gap before condensing on the cooler surface. The advantage of this method is the high thermal insulation towards the condenser channel, thus minimizing heat conduction losses. The user has to assign the feed inlet and temperature in order to get all performance results such as the number of pores, efficiency, flux, mass transfer, GOR, etc...The system contains the following units:
2-Heat exchanger unit between the FPC and the AGMD.
5-PV for electrical needs (Pumps).
6-Solar radiation models for any location.
Based on the calculation of the solar radiation model, the user will be able to calculate the solar pond thermal power and performance. The cover material has been added to discover the effect on the Pond performance. Users can select between covered and uncovered solar ponds. User will be able to obtain the following results:
1-Solar radiation angles.
2-Global, Hourly, Monthly average solar flux.
3-Instant, beam, diffuse, solar radiation, W/m2.
4-Flux entering the water pond, W/m2.
5-Solar flux at various depths, W/m2.
6-Solar pond thermal power, kW.
**MatLab-SimuLink should be used to run the model.
Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub
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Solar Pond/PV Assisted AGMD Desalination: Performance Model
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