Formation and maintenance of salinity gradient in a solar pond using brine injection technique for linear stratification

The El Paso salinity gradient solar pond, initiated in 1983, has been in operation since 1985. Through 16 years of research and operation, the El Paso Solar Pond has successfully demonstrated applications including desalination, waste brine management, industrial process heat production, and electricity generation; and has developed and implemented key technical advancements to improve the technical viability and economic feasibility of salinity gradient solar ponds, including: 1) an automated instrumentation monitoring system, 2) a stability analysis strategy and high temperature (60–90°C) gradient maintenance methods, 3) a scanning injection technique for improved salinity gradient construction and maintenance, 4) new liner technology, and 5) an improved heat extraction system.

Download Full-text

Dependency of Air Heating and Cooling for Karbala Buildings on a Salinity Gradient Solar Pond Area

10.33329/aus.2019.n26.4.29 ◽

2019 ◽

Vol 26 (4) ◽

pp. 206-214

Keyword(s):

Salinity Gradient ◽

Heating And Cooling ◽

Solar Pond ◽

Air Heating

Download Full-text

Industrial Heating application of a Salinity gradient solar pond for salt production

Energy Procedia ◽

10.1016/j.egypro.2019.02.141 ◽

2019 ◽

Vol 160 ◽

pp. 231-238 ◽

Cited By ~ 1

Author(s):

Mohammed Bawahab ◽

Hosam Faqeha ◽

Quoc Line Ve ◽

Ahmadreza Faghih ◽

Abhijit Date ◽

...

Keyword(s):

Salinity Gradient ◽

Salt Production ◽

Solar Pond ◽

Industrial Heating

Download Full-text

Dynamic effects in a salinity-gradient solar-pond heating system

Applied Energy ◽

10.1016/0306-2619(85)90023-6 ◽

1985 ◽

Vol 20 (3) ◽

pp. 189-205 ◽

Cited By ~ 3

Author(s):

M.T. Kangas ◽

P.D. Lund

Keyword(s):

Salinity Gradient ◽

Heating System ◽

Dynamic Effects ◽

Solar Pond

Download Full-text

Assessing the Maximum Stability of the Nonconvective Zone in a Salinity-Gradient Solar Pond

Journal of Solar Energy Engineering ◽

10.1115/1.4036773 ◽

2017 ◽

Vol 139 (4) ◽

Cited By ~ 1

Author(s):

A. A. Abdullah ◽

K. A. Lindsay

Keyword(s):

Salinity Gradient ◽

Fluid Velocity ◽

Weather Conditions ◽

Convective Zone ◽

Heat Extraction ◽

Solar Pond ◽

Maximum Stability ◽

Storage Zone ◽

The Stability

The quality of the stability of the nonconvective zone of a salinity-gradient solar pond (SGSP) is investigated for an operating protocol in which the flushing procedure exactly compensates for evaporation losses from the solar pond and its associated evaporation pond. The mathematical model of the pond uses simplified, but accurate, constitutive expressions for the physical properties of aqueous sodium chloride. Also, realistic boundary conditions are used for the behaviors of the upper and lower convective zones (LCZs). The performance of a salinity-gradient solar pond is investigated in the context of the weather conditions at Makkah, Saudi Arabia, for several thickness of upper convective zone (UCZ) and operating temperature of the storage zone. Spectral collocation based on Chebyshev polynomials is used to assess the quality of the stability of the pond throughout the year in terms of the time scale for the restoration of disturbances in temperature, salinity, and fluid velocity underlying the critical eigenstate. The critical eigenvalue is found to be real and negative at all times of year indicating that the steady-state configuration of the pond is always stable, and suggesting that stationary instability would be the anticipated mechanism of instability. Annual profiles of surface temperature, salinity, and heat extraction are constructed for various combinations for the thickness of the upper convective zone and storage zone temperature.

Download Full-text