A Halo-Thermal Simulation of the Dead Sea for Application to Solar Energy Projects

1983 ◽  
Vol 105 (4) ◽  
pp. 348-355 ◽  
Author(s):  
P. Vadasz ◽  
D. Weiner ◽  
Y. Zvirin
Keyword(s):  
Dead Sea ◽  
Solar Ponds ◽  
One Dimensional ◽  
Finite Differences Method ◽  
Energy Projects ◽  
Transfer Equations ◽  
Salt Gradient ◽  
The Dead ◽  
Large Water ◽  
Engineering Projects

A one-dimensional numerical model is developed to predict the long-range variations of vertical temperature, density, and salinity profiles in the Dead Sea, which is a highly saline large water body. The model utilizes the continuity, momentum, energy, and mass transfer equations, while taking into account the influence of the wind. The partial differential equations were solved numerically by means of explicit finite differences method. Simulation results were verified by comparison to measured data. In addition, the algorithm evaluates the evaporation rate from the Dead Sea which is an important parameter in several engineering projects under planning, such as the Mediterranean-Dead Sea conduit and the construction of floating salt gradient solar ponds for power generation.

Performance investigation of a salt gradient solar pond coupled with desalination facility near the Dead Sea

Energy ◽  
2011 ◽  
Vol 36 (2) ◽  
pp. 922-931 ◽  
Author(s):  
A. Saleh ◽  
J.A. Qudeiri ◽  
M.A. Al-Nimr
Keyword(s):  
Dead Sea ◽  
Solar Pond ◽  
Salt Gradient ◽  
The Dead

scholarly journals Modeling of the Surface Convective Layer of Salt-Gradient Solar Ponds

1982 ◽  
Vol 104 (4) ◽  
pp. 293-298 ◽  
Author(s):  
Y. S. Cha ◽  
W. T. Sha ◽  
W. W. Schertz
Keyword(s):  
Double Diffusive Convection ◽  
Vertical Temperature ◽  
Solar Ponds ◽  
One Dimensional ◽  
Diffusive Convection ◽  
Combined Action ◽  
Salt Gradient ◽  
Wind Mixing ◽  
Convective Layer ◽  
Double Diffusive

A one-dimensional numerical model is developed to predict the diurnal variations of vertical temperature and concentration profiles in salt-gradient solar ponds. The model employs augmented thermal and mass diffusivities due to turbulent wind mixing and double-diffusive convection. Numerical results indicate that the thickness of the surface convective layer increases with wind speed (or the wavelength of the surface wave). Double-diffusive convection is, in the absence of wind, capable of sustaining a mixed layer at the surface when strong cooling occurs over the pond. In field ponds, the surface convective layer is probably maintained as a result of the combined action of wind-generated turbulent mixing and double-diffusive convection.

Study of Buoyancy-Driven Flow Effect on Salt Gradient Solar Ponds Performance

2018 ◽  
Vol 140 (10) ◽  
Author(s):  
Shahram Derakhshan ◽  
Seyedeh Elnaz Mirazimzadeh ◽  
Syamak Pazireh
Keyword(s):  
Radiation Energy ◽  
Numerical Approach ◽  
Conservation Equation ◽  
Solar Ponds ◽  
One Dimensional ◽  
Energy Conservation Equation ◽  
Solar Pond ◽  
Salt Gradient ◽  
The Stability ◽  
Numerical Approaches

Salt gradient solar ponds are the ponds in which due to existence of saline and salt gradient layers, lower layers are denser and avoid the natural convection phenomenon to occur so that solar radiation energy can be stored in the lowest zone. In this study, one-dimensional (1D) and two-dimensional (2D) numerical approaches have been implemented to simulate unsteady buoyancy-driven flow of solar ponds. In 1D method, the pond has been investigated in terms of the layers thicknesses so that the variation of temperature is calculated by energy conservation equation. The formulized radiation term was used as energy source term in energy equation. The results of 1D approach were validated with an experimental study and then optimization was carried out to determine the maximum thermal efficiency for an interval of layers height. Since the stability of the solar pond cannot be determined by 1D simulation, a 2D approach was considered to show the stability for different nonconvective zone (NCZ) heights and different salt gradients. In 2D study, in order to investigate hydrodynamic and thermal behavior of saltwater fluid, a numerical approach was used to simulate temperature gradients throughout the pond. The results of 2D numerical method are validated with an experimental data. The effect of linear and nonlinear salt gradient was considered.

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