Energy analysis and shadow modeling of a rectangular type salt gradient solar pond

Aramesh, Mohamad; Kasaeian, Alibakhsh; Pourfayaz, Fathollah; Wen, Dongsheng

doi:10.1016/j.solener.2017.02.026

Cited by 27 publications

(16 citation statements)

References 28 publications

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“…For each structure type an experimental study has been chosen from the literature. Moreover, a modeling method presented in the literature has been modified with the presented relations for the sunny areas . By employing the modified method, for all the configurations, the temperature of the LCZ layer has been calculated theoretically.…”

Section: Resultsmentioning

confidence: 99%

“…Before investigating the results, the presented modifications must be validated. For each structure type an experimental study [21]. By employing the modified method, for all the configurations, the temperature of the LCZ layer has been calculated theoretically.…”

Section: Resultsmentioning

confidence: 99%

“…Eq. reveals the drastic effect of the sunny areas on the amount of the stored energy .

Q_{solar} = italicβE A_{i} h ((), X_{i})

where Q solar (W) is the amount of the solar thermal energy entering the pond at the depth of X i (m), E (W.m −2 ) is the solar irradiance in the location of the pond, β is the fraction of the total energy flux that gets into the pond, A i (m 2 ) is the sunny area at the depth of X i , and h ( X i ) is the fraction of the solar energy passing through the depth of X i . According to the direct relation between the sunny areas and the amount of the entering solar energy into the pond, the walls shading have a significant effect on the performance of a pond, especially in the laboratory and small scales.…”

Section: The Walls Shading Effectmentioning

confidence: 99%

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A Detailed Investigation of the Walls Shading Effect on the Performance of Solar Ponds

Aramesh

Kasaeian

Pourfayaz

et al. 2018

Env Prog and Sustain Energy

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In this article, a general modification on the existing heat storage modeling methods of solar ponds is presented. For this purpose, the walls shading effects have been thoroughly investigated. Four common structural types of the solar pond are studied and proper relations have been derived for them. Considering all the effective parameters on the walls shading status, precise relations for calculation of the sunny area at any desired time and location were presented. To compare different configurations, all the four types are studied in two design sets; ponds with the same top surface area of 12.56 m2, and ponds with the same total volume of 18 m3. It was indicated that the derived formulas can reduce the pond temperature calculation uncertainty from 8% (in the case of neglecting the shading effects) to less than 3%. Also, it was concluded that in the same total volume, the ponds with sloped walls show a better thermal performance. © 2018 American Institute of Chemical Engineers Environ Prog, 38:e13014, 2019

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…Eq. reveals the drastic effect of the sunny areas on the amount of the stored energy .

Q_{solar} = italicβE A_{i} h ((), X_{i})

Section: The Walls Shading Effectmentioning

confidence: 99%

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A Detailed Investigation of the Walls Shading Effect on the Performance of Solar Ponds

Aramesh

Kasaeian

Pourfayaz

et al. 2018

Env Prog and Sustain Energy

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“…Aramesh et al worked on the energy analysis of the shadow modeling of a rectangular version solar pond (SP). It was utilized to determine the performance of the SP by modifying known equations, and it was concluded that these equations were more compatible with the experimental data . The ETSC is a simple water heating system that can convert solar energy into heat.…”

Section: Introductionmentioning

confidence: 99%

“…It was utilized to determine the performance of the SP by modifying known equations, and it was concluded that these equations were more compatible with the experimental data. 10 The ETSC is a simple water heating system that can convert solar energy into heat. The ETSC system can be used for many purposes such as domestic and commercial hot water, space heating, pool heating, and floor heating.…”

Section: Introductionmentioning

confidence: 99%

Performance investigation of salt gradient cylindrical solar pond integrated and nonintegrated with evacuated tube solar collectors

2019

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Summary In this study, the energetic and exergetic efficiencies of a salt gradient cylindrical solar pond (SGCSP) that integrated and nonintegrated evacuated tube solar collectors (ETSCs) are investigated to improve daily heat preservation performance of the heat storage zone (HSZ). The integrated system is consisted of an SGCSP and four ETSCs. The SGCSP has a surface area of 2 m2, a depth of 1.65 m, salty water layers at different densities, and HSZ in which the cylindrical serpentine type heat exchanger (CSHE) is located. Thus, the daily effects of the heat storage performance of both the ETSCs and the SGCSP in the winter season was determined experimentally. The analysis of the data regarding the efficiencies of the system is investigated separately by means of experimental studies where the SGCSP is integrated and nonintegrated with the ETSCs. The number of ETSCs integrated with SGCSP is increased to 1, 2, 3, and 4, respectively, and each of the five different experimental systems is performed separately. The temperature distributions of the integrated system are measured by a data acquisition system on 11 different points per hour. The efficiencies are calculated using the data obtained from these studies. Consequently, the energetic and exergetic efficiencies of the SGCSP are obtained without collectors as 10.4% and 4.3% and with one collector as 12.83% and 6.15%, with two collectors 14.88% and 8.25%, with three collectors 16% and 9.35%, and finally with four collectors 16.94% and 10.3%, respectively. Furthermore, the theoretical efficiencies are found to be consistent with the experimental results obtained by increasing the collector numbers.

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Evolution and novel accomplishments of solar pond, desalination and pond coupled to desalination systems: a review

Sathish

Jegadheeswaran²

2021

J Therm Anal Calorim

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Energy analysis and shadow modeling of a rectangular type salt gradient solar pond

Abstract: This is a repository copy of Energy analysis and shadow modeling of a rectangular type salt gradient solar pond.

Cited by 27 publications

References 28 publications

A Detailed Investigation of the Walls Shading Effect on the Performance of Solar Ponds

A Detailed Investigation of the Walls Shading Effect on the Performance of Solar Ponds

Performance investigation of salt gradient cylindrical solar pond integrated and nonintegrated with evacuated tube solar collectors

Evolution and novel accomplishments of solar pond, desalination and pond coupled to desalination systems: a review

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