Solar pond conception — experimental and theoretical studies

Kurt, Hüseyin; Halici, Fethi; Binark, Ahmet Korhan

doi:10.1016/s0196-8904(99)00147-8

Cited by 70 publications

(46 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The free-surface of the solar pond is subject to heat losses by convection, evaporation and radiation. These heat losses are expressed as follows: Heat losses by convection are given by Kishore and Joshi [27]; Kurt et al [4,13]; Mansour et al [11,12]:…”

Section: Appendixmentioning

confidence: 99%

“…where h c represents the convective heat transfer coefficient which depends on the wind average velocit This coefficient is given by Kurt et al [4,13]; Husain et al [6]; Mansour et al [11,12]:…”

Section: Appendixmentioning

confidence: 99%

“…Giestas et al [3] analysed the stability of the gradient zone of a solar pond taking into account solar radiation absorption. Kurt et al [4] studied the performance of an uninsulated solar pond by developing one-dimensional transient heat conduction with internal heating of fluid. Their research shows that it is possible to store solar energy for a long period of time in a correctly planned solar pond.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Two-Dimensional Numerical Study of Hydrodynamic, Heat and Mass Transfer and Stability in a Salt Gradient Solar Pond

2012

View full text Add to dashboard Cite

Abstract:In this work, the problem of hydrodynamic, heat and mass transfer and stability in a salt gradient solar pond has been numerically studied by means of computational fluid dynamics in transient regime. The body of the simulated pond is an enclosure of height H and length L wherein an artificial salinity gradient is created in order to suppress convective motions induced by solar radiation absorption and to stabilize the solar pond during the period of operation. Here we show the distribution of velocity, temperature and salt concentration fields during energy collection and storage in a solar pond filled with water and constituted by three different salinity zones. The bottom of the pond is blackened and the free-surface is subjected to heat losses by convection, evaporation and radiation while the vertical walls are adiabatic and impermeable. The governing equations of continuity, momentum, thermal energy and mass transfer are discretized by finite-volume method in transient regime. Velocity vector fields show the presence of thin convective cells in the upper convective zone (UCZ) and large convective cells in the lower convective zone (LCZ). This study shows the importance of buoyancy ratio in the decrease of temperature in the UCZ and in the preservation of high temperature in the LCZ. It shows also the importance of the thickness of Non-Convective Zone (NCZ) in the reduction of the upwards heat losses.

show abstract

Section: Appendixmentioning

confidence: 99%

Section: Appendixmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Two-Dimensional Numerical Study of Hydrodynamic, Heat and Mass Transfer and Stability in a Salt Gradient Solar Pond

2012

View full text Add to dashboard Cite

show abstract

“…There are many one-dimensional studies in steady or transient conditions [8,28,29], and more sophisticated two-dimensional models that analyze in detail the hydrodynamics inside the pond [30][31][32]. In general, the one-dimensional steady models provide a good first approximation to determine the thermal performance of a solar pond, especially for analyzing changes in performance against parameter variations [6,[33][34][35][36].…”

Section: Sgsp Modelmentioning

confidence: 99%

Constructal design of salt-gradient solar pond fields

González

Amigó

Lorente

et al. 2016

Int. J. Energy Res.

View full text Add to dashboard Cite

SUMMARYSalt-gradient solar ponds (SGSPs) are water bodies that capture and accumulate large amounts of solar energy. The design of an SGSP field has never been analyzed in terms of studying the optimal number of solar ponds that must be built to maximize the useful energy that can be collected in the field, or the most convenient way to connect the ponds. In this paper, we use constructal design to find the optimal configuration of an SGSP field. A steady-state thermal model was constructed to estimate the energy collected by each SGSP, and then a complementary model was developed to determine the final temperature of a defined mass flow rate of a fluid that will be heated by heat exchangers connected to the solar ponds. By applying constructal design, four configurations for the SGSP field, with different surface area distribution, were evaluated: series, parallel, mixed series-parallel and tree-shaped configurations. For the study site of this investigation, it was found that the optimal SGSP field consists of 30 solar ponds of increasing surface area connected in series. This SGSP field increases the final temperature of the fluid to be heated in 22.9%, compared to that obtained in a single SGSP. The results of this study show that is possible to use constructal theory to further optimize the heat transfer of an SGSP field. Experimental results of these configurations would be useful in future works to validate the methodology proposed in this study.

show abstract

“…In this research work, the temperature is constant in the UCZ and in the LCZ. Kurt et al (2000) studied experimentally, analytically, and numerically the thermal behavior of a one-dimensional salinity gradient solar pond in transient regime. They showed that the experimental, numerical, and analytical temperatures are constant in the UCZ and in the LCZ.…”

Section: Introductionmentioning

confidence: 99%

Numerical temperature and concentration distributions in an insulated salinity gradient solar pond

Boudhiaf

2015

Renewables

View full text Add to dashboard Cite

In this paper, the temperature and concentration distributions in an insulated salinity gradient solar pond are studied numerically in transient regime. The dimensionless governing equations are solved by finite-volume method using SIMPLER algorithm with HYBRID scheme. The pond is filled with a mixture of salt and water to form three zones: upper convective zone (UCZ), non-convective zone (NCZ) and lower convective zone (LCZ). The vertical walls and the bottom of the pond are thermally insulated. The bottom of the pond is black painted. The simulation of the insulated salinity gradient solar pond shows the existence of salt diffusion from the bottom to the free surface. This numerical study shows also that the buoyancy ratio increases and decreases the temperature and concentration in the LCZ and in the UCZ, respectively.

show abstract

Solar pond conception — experimental and theoretical studies

Cited by 70 publications

References 13 publications

A Two-Dimensional Numerical Study of Hydrodynamic, Heat and Mass Transfer and Stability in a Salt Gradient Solar Pond

A Two-Dimensional Numerical Study of Hydrodynamic, Heat and Mass Transfer and Stability in a Salt Gradient Solar Pond

Constructal design of salt-gradient solar pond fields

Numerical temperature and concentration distributions in an insulated salinity gradient solar pond

Contact Info

Product

Resources

About