Effect of heat capacity on the performance of solar still with water flow over the glass cover

1990 ◽  
Vol 30 (3) ◽  
pp. 277-285 ◽  
Author(s):  
S.A. Lawrence ◽  
S.P. Gupta ◽  
G.N. Tiwari
Keyword(s):  
Heat Capacity ◽  
Water Flow ◽  
Solar Still ◽  
Glass Cover

Effect of Heat Capacity of Basin Material and Glass Cover on Distillate Yield of Single Slope Passive Solar still – A Theoretical Investigation

2015 ◽  
Vol 787 ◽  
pp. 43-47
Author(s):  
V. Sivakumar ◽  
E. Ganapathy Sundaram ◽  
B. Sakthikiran ◽  
T. Sanjay Krishnan ◽  
A. Riyaz Hussain
Keyword(s):  
Mathematical Modeling ◽  
Heat Capacity ◽  
Thermal Properties ◽  
Specific Heat ◽  
Thermal Analyses ◽  
Solar Still ◽  
Glass Cover ◽  
Distillate Yield ◽  
Passive Solar Still ◽  
Passive Solar

In most of the thermal analyses to develop a mathematical model for the conventional single slope passive solar still, it is found that heat capacity of the basin and glass cover are neglected to simplify the mathematical modeling. However all the materials have their own specific heat and according to the specific heat the material store some amount of heat energy within it. As a result the heat transfer between the system components of a solar still and thermal losses from the components will vary depending on their thermal properties like heat capacity, absorptance and thermal conductivity of components. Due to this, the temperature variation of the different components of a solar still is not only the function of solar intensity nevertheless also the function of their thermal properties. Subsequently it is necessary to consider the heat capacity of all the components of a conventional still. In this paper, mathematical modeling was developed to study the effect of heat capacity of basin material and glass cover on distillate yield of single slope passive solar still. The study found that considering the heat capacity of the components increase the distillate yield of the single slope passive solar still.

Optimizing the performance of hemispheric solar still using nano-ZnO with cooling the glassy cover at a variable water flow rate

2021 ◽  
Author(s):  
Mohammed El Hadi Attia ◽  
Abd Elnaby Kabeel ◽  
S. A. El-Agouz ◽  
El Mir Mabrouk Lassaad ◽  
Ravishankar Sathyamurthy ◽  
...  
Keyword(s):  
Water Flow ◽  
Flow Rate ◽  
Water Flow Rate ◽  
Solar Still ◽  
Nano Zno ◽  
Variable Water

scholarly journals A Review of New Solar Still Design Comprising a Five-Sided Glass Cover and Equipped with an External Tank for PCM

2021 ◽  
Vol 877 (1) ◽  
pp. 012038
Author(s):  
Abbas Sahi Shareef ◽  
Hayder Jabbar Kurji ◽  
Hassan Abdulameer Matrood
Keyword(s):  
Melting Point ◽  
Phase Change ◽  
Solar Collector ◽  
Phase Change Materials ◽  
Review Paper ◽  
Pure Water ◽  
Solar Still ◽  
Glass Cover ◽  
Solar Distillation ◽  
Change Material

Abstract Various human activities have led to the consumption of large quantities of pure water, which has led researchers to find efficient and economical methods for desalinating seawater and water containing impurities. In this review paper, solar energy where it is permanent, abundant and environmentally friendly, to produce pure water was discussed using a new solar distillation device, representing the paper’s novelty. The distillation was designed and used in the way led to increase efficiency and improve productivity by adding a solar collector to the system and equipped with a tank containing phase change material (PCM). It has a low melting point and can change the phase by absorbing the system’s latent heat to maintain the system’s temperature. Which contributes to increasing the distillation period even after sunset, thus increasing the daily productivity of freshwater. Using phase change materials will increase distillation hours from (3-4) hours after sunset, increasing the amount of production between (75 - 90) %.

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