A Theoretical Model for a Humidification Dehumidification (HD) Solar Desalination Unit
A theoretical study of a humidification
dehumidification solar desalination unit has been carried out to
increase understanding the effect of weather conditions on the unit
productivity. A humidification-dehumidification (HD) solar
desalination unit has been designed to provide fresh water for
population in remote arid areas. It consists of solar water collector
and air collector; to provide the hot water and air to the desalination
chamber. The desalination chamber is divided into humidification
and dehumidification towers. The circulation of air between the two
towers is maintained by the forced convection. A mathematical
model has been formulated, in which the thermodynamic relations
were used to study the flow, heat and mass transfer inside the
humidifier and dehumidifier. The present technique is performed in
order to increase the unit performance. Heat and mass balance has
been done and a set of governing equations has been solved using the
finite difference technique. The unit productivity has been calculated
along the working day during the summer and winter sessions and
has compared with the available experimental results. The average
accumulative productivity of the system in winter has been ranged
between 2.5 to 4 (kg/m2)/day, while the average summer productivity
has been found between 8 to 12 (kg/m2)/day.
[1] Fath H.E., "Desalination Technology- The Role of Egypt in Region",
IWT C, Alexandria, Egypt, 2000.
[2] Fath H.E., "Solar Desalination Promising Alternative for Fresh Water
Production with Free Energy Simple Technology and Clean
Environmental", Desalination, Vol. 116, pp. 45–56, 1998.
[3] M. Abdelkader, Nafey A. S., Abdelmotalip A., and Mabrouk A. A.,
"Parameters Affecting Solar Still Productivity", Energy Conversion and
Management, Vol.411,pp 797–809, 2000.
[4] M.Abdelkader., Nafey A. S, Abdelmotalip A., and Mabrouk A.A.,
"Solar Still Productivity Enhancement", Energy Conversion and
Management, Vol. 42, pp. 1401–1408,2001.
[5] M. Abdelkader., Nafey A. S, Abdelmotalip A., and Mabrouk A. A.,
"Enhancement of Solar Still Productivity Using Floating Perforated
Black Plate", Energy Conversion and Management, Vol. 43 (7),pp.937-
946,2002.
[6] Yasser ElHenawy, M. Abd ElKader, Aref., A., Gamal H. Moustafa "A
Theoretical and Experimental Study for a Humidification – Dehumidification (HD) Solar Desalination Unit" International Journal of
Water Resources and Arid Environments, Vol.3(2),pp.108-120, ISSN
2079-7079,2014.
[7] Ettouney, H, "Design and Analysis of Humidification Dehumidification
Desalination Process", Desalination, Vol. 183, pp.341–352, 2005.
[8] Yamali, C., and Solmus, I., "Theoretical Investigation of a
Humidification Dehumidification Desalination System Configured by a
Double Pass Flat Plate Solar Air Heater", Desalination, Vol.205, pp.163-
177, 2007.
[9] Marmouch, H., Orfi, J., and Ben Nasrallah, S., 2007.”Effect of a Cooling
Tower on a Desalination System", Desalination 238: 281-289.
[10] Dai, Y.J., Wang, R.Z., and Zhang, H.F., "Parametric Analysis to
Improve the Performance of a Solar Desalination Unit with
Humidification and Dehumidification", Desalination, Vol.142, pp.107-
118, 2002.
[11] Gao, P. Zhang, L., and Zhang, H., "Performance Analysis of a New
Type Desalination Unit of Heat Pump with Humidification and
Dehumidification", Desalination, Vol.202, pp. 531-537, 2008.
[12] Garg, H.P., Adhikari, R.S., and Kumar, R., "Experimental Design and
Computer Simulation of Multi-Effect Humidification (MEH)–
Dehumidification Solar Distillation", Desalination, Vol.153, pp. 81-86,
2002.
[13] Fath H.S., and Ghazy A., "Solar Desalination Using Humidification–
Dehumidification", IWT C, Alexandria, Egypt, 2000.
[14] Darwish M.A.," Experimental and Theoretical Study of Humidification
– Dehumidification Desalting System", Desalination, Vol.94, pp.11–24.
[15] Al-Hallaj S., and Farid, M., "Solar Desalination with a Humidification–
Dehumidification Cycle: Performance Unit", Desalination, Vol.120, pp.
273–280, 1998.
[16] Moustafa M., Elsayed, Ibrahim S. Taha, and Jaffer A.Sabbagh,"Design
of Solar Thermal Systems", Jeddah, Saudi Arabia, 1994.
[17] John A., William, D. and Beckman, A., "Solar Engineering of thermal
processes", New York, USA: John Wiley, 1980.
[18] Maclaine-cross, I.L. and P.J. Banks, “A general theory of wet surface
heat exchanger and its application to regenerative evaporative cooling”.
ASME J. Heat Trans., Vol.103, pp.579-585, 1981.
[19] Kettleborough, C.F., and C.S. Hsieh, “The Thermal Performance of the
Wet Surface Plastic Plate Heat Exchanger Used as an Indirect
Evaporative Cooler”, ASME J. Heat Transfer, Vol.105 (2), pp. 366-375,
1983.
[20] Tchinda R, 2009."A review of the mathematical models for predicting
solar air heaters systems" Renewable and sustainable energy reviews,
Vol.640, pp.1–26, 2009.
[1] Fath H.E., "Desalination Technology- The Role of Egypt in Region",
IWT C, Alexandria, Egypt, 2000.
[2] Fath H.E., "Solar Desalination Promising Alternative for Fresh Water
Production with Free Energy Simple Technology and Clean
Environmental", Desalination, Vol. 116, pp. 45–56, 1998.
[3] M. Abdelkader, Nafey A. S., Abdelmotalip A., and Mabrouk A. A.,
"Parameters Affecting Solar Still Productivity", Energy Conversion and
Management, Vol.411,pp 797–809, 2000.
[4] M.Abdelkader., Nafey A. S, Abdelmotalip A., and Mabrouk A.A.,
"Solar Still Productivity Enhancement", Energy Conversion and
Management, Vol. 42, pp. 1401–1408,2001.
[5] M. Abdelkader., Nafey A. S, Abdelmotalip A., and Mabrouk A. A.,
"Enhancement of Solar Still Productivity Using Floating Perforated
Black Plate", Energy Conversion and Management, Vol. 43 (7),pp.937-
946,2002.
[6] Yasser ElHenawy, M. Abd ElKader, Aref., A., Gamal H. Moustafa "A
Theoretical and Experimental Study for a Humidification – Dehumidification (HD) Solar Desalination Unit" International Journal of
Water Resources and Arid Environments, Vol.3(2),pp.108-120, ISSN
2079-7079,2014.
[7] Ettouney, H, "Design and Analysis of Humidification Dehumidification
Desalination Process", Desalination, Vol. 183, pp.341–352, 2005.
[8] Yamali, C., and Solmus, I., "Theoretical Investigation of a
Humidification Dehumidification Desalination System Configured by a
Double Pass Flat Plate Solar Air Heater", Desalination, Vol.205, pp.163-
177, 2007.
[9] Marmouch, H., Orfi, J., and Ben Nasrallah, S., 2007.”Effect of a Cooling
Tower on a Desalination System", Desalination 238: 281-289.
[10] Dai, Y.J., Wang, R.Z., and Zhang, H.F., "Parametric Analysis to
Improve the Performance of a Solar Desalination Unit with
Humidification and Dehumidification", Desalination, Vol.142, pp.107-
118, 2002.
[11] Gao, P. Zhang, L., and Zhang, H., "Performance Analysis of a New
Type Desalination Unit of Heat Pump with Humidification and
Dehumidification", Desalination, Vol.202, pp. 531-537, 2008.
[12] Garg, H.P., Adhikari, R.S., and Kumar, R., "Experimental Design and
Computer Simulation of Multi-Effect Humidification (MEH)–
Dehumidification Solar Distillation", Desalination, Vol.153, pp. 81-86,
2002.
[13] Fath H.S., and Ghazy A., "Solar Desalination Using Humidification–
Dehumidification", IWT C, Alexandria, Egypt, 2000.
[14] Darwish M.A.," Experimental and Theoretical Study of Humidification
– Dehumidification Desalting System", Desalination, Vol.94, pp.11–24.
[15] Al-Hallaj S., and Farid, M., "Solar Desalination with a Humidification–
Dehumidification Cycle: Performance Unit", Desalination, Vol.120, pp.
273–280, 1998.
[16] Moustafa M., Elsayed, Ibrahim S. Taha, and Jaffer A.Sabbagh,"Design
of Solar Thermal Systems", Jeddah, Saudi Arabia, 1994.
[17] John A., William, D. and Beckman, A., "Solar Engineering of thermal
processes", New York, USA: John Wiley, 1980.
[18] Maclaine-cross, I.L. and P.J. Banks, “A general theory of wet surface
heat exchanger and its application to regenerative evaporative cooling”.
ASME J. Heat Trans., Vol.103, pp.579-585, 1981.
[19] Kettleborough, C.F., and C.S. Hsieh, “The Thermal Performance of the
Wet Surface Plastic Plate Heat Exchanger Used as an Indirect
Evaporative Cooler”, ASME J. Heat Transfer, Vol.105 (2), pp. 366-375,
1983.
[20] Tchinda R, 2009."A review of the mathematical models for predicting
solar air heaters systems" Renewable and sustainable energy reviews,
Vol.640, pp.1–26, 2009.
@article{"International Journal of Electrical, Electronic and Communication Sciences:71500", author = "Yasser Elhenawy and M. Abd Elkader and Gamal H. Moustafa", title = "A Theoretical Model for a Humidification Dehumidification (HD) Solar Desalination Unit", abstract = "A theoretical study of a humidification
dehumidification solar desalination unit has been carried out to
increase understanding the effect of weather conditions on the unit
productivity. A humidification-dehumidification (HD) solar
desalination unit has been designed to provide fresh water for
population in remote arid areas. It consists of solar water collector
and air collector; to provide the hot water and air to the desalination
chamber. The desalination chamber is divided into humidification
and dehumidification towers. The circulation of air between the two
towers is maintained by the forced convection. A mathematical
model has been formulated, in which the thermodynamic relations
were used to study the flow, heat and mass transfer inside the
humidifier and dehumidifier. The present technique is performed in
order to increase the unit performance. Heat and mass balance has
been done and a set of governing equations has been solved using the
finite difference technique. The unit productivity has been calculated
along the working day during the summer and winter sessions and
has compared with the available experimental results. The average
accumulative productivity of the system in winter has been ranged
between 2.5 to 4 (kg/m2)/day, while the average summer productivity
has been found between 8 to 12 (kg/m2)/day.
", keywords = "Finite difference, Dehumidification, Humidification,
Solar desalination, Solar collector, Simulation, Water productivity.", volume = "9", number = "6", pages = "646-10", }
