MODELING AND SIMULATION OF A SALT CRYSTALLIZATION IN A

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MODELING AND SIMULATION OF A SALT CRYSTALLIZATION IN A Powered By Docstoc
					                                                       November 29th – December 1st, 2006
                                                    Amora Tapae Hotel, Chiangmai Thailand




        MODELING AND SIMULATION OF A SALT CRYSTALLIZATION IN A
                         SOLAR EVAPORATOR



          Terasut Sookkumnerd 1, Guntima Sirijeerachai 1, Rattawan Kiattikomol1 and Boonchai
                                          Wichitsathian 2

1
    School of Chemical Engineering, Suranaree University of Technology, 111 University Avenue, Muang
                              District, Nakhon Ratchasima, 30000, Thailand
                 Tel: +(66)-4422-4490 Fax: +(66)-4422-4609 E-mail: terasut@sut.ac.th

    2
        School of Enviromental Engineering, Suranaree University of Technology, 111 University Avenue,
                            Muang District, Nakhon Ratchasima, 30000, Thailand


                                                  ABSTRACT

          A salt crystallization in a solar evaporator was modeled by using the water evaporation rate, the
radiation energy losses, the energy losses by convection, the energy losses by conduction, the latent heat
of vaporization and the climate data available in the literature. The mathematical model was first tested
with the water evaporation rate forecasted by the Thai Meteorological Department and it was found that
the numerical results agreed quite well with the forecast. Then, the mathematical model of a salt
crystallization in a solar evaporator was performed by using the average temperature, the average
humidity and the average wind velocity in Nakhon Ratchasima, Thailand and compared with the practical
data gathered from small salt producers. It was found that the mathematical model yielded the production
rate that was close to the real data. Consequently, the mathematical model were simulated and
investigated in order to locate the optimum operating condition that would yield the maximum production
rate.


Keywords :           Modeling, solar evaporation, salt, crystallization.