Theoretical Modelling of a Dynamic Solar Thermal Desalination Unit with a Fluid Piston Engine

B. Belgasim
School of Computing, Engineering and Information Sciences, Northumbria University, Newcastle upon Tyne, UK

K. Mahkamov
School of Computing, Engineering and Information Sciences, Northumbria University, Newcastle upon Tyne, UK

Ladda ner artikelhttp://dx.doi.org/10.3384/ecp110573866

Ingår i: World Renewable Energy Congress - Sweden; 8-13 May; 2011; Linköping; Sweden

Linköping Electronic Conference Proceedings 57:26, s. 3866-3872

Visa mer +

Publicerad: 2011-11-03

ISBN: 978-91-7393-070-3

ISSN: 1650-3686 (tryckt), 1650-3740 (online)


Results of theoretical simulations of the steady-state operation of the dynamic solar thermal desalination unit with a fluid piston are presented in this paper. A laboratory prototype of a dynamic thermal water distillation unit was developed and it was built around an engine with fluid pistons. In the calculation scheme; the internal circuit of the desalination unit was split into several control volumes; namely the evaporator; the condenser and the cylinder. The lumped parameter mathematical model was derived based on the differential energy and mass conservation equations written for each of the control volumes and describing heat and mass transfer processes taking place during water evaporation and condensation under the cyclic variation of the pressure and temperature inside the system when the engine operates. The solution of the set of governing equations produces information on the variation of temperatures and pressure inside the system over the thermodynamic cycle and on the water desalination capacity of the unit.


Solar water desalination; mathematical modellin


[1] S. Kalogirou; Seawater desalination using renewable energy sources; Progress in Energy and Combustion Science 31; 2005; pp. 242-281. doi: 10.1016/j.pecs.2005.03.001.

[2] M. Shata and K. Mahkamov; Determination of rational design parameters of a multi- stage solar water desalination still using transient mathematical modelling; Renewable Energy 35; 2010; pp. 52-61 doi: 10.1016/j.renene.2009.06.022.

[3] K. Mahkamov and B. Belgasim; Experimental study of the performance of a dynamic water desalination system with a fluid piston engine; In: The 14th international Stirling engine conference; November 16-18; 2009; Groningen; The Netherlands.

[4] S. Maroo and D. Goswami; Theoretical analysis of a single-stage and two-stage solar driven flash desalination system based on passive vacuum generation; Desalination 249; 2009; pp. 635-646. doi: 10.1016/j.desal.2008.12.055.

[5] F. Incropera and D. De Witt; Fundamentals of heat and mass transfer; New York: John Wiley&Sons; 3rd edition.

Citeringar i Crossref