Immersed fins influence on the double slope solar still production in south Algeria climatic condition

Moungar, Houcine; Ahmed, Aziz; Sahli, Youcef; Aabdelkrimr, Hieda

doi:10.18280/ijht.350444

Cited by 14 publications

(10 citation statements)

References 8 publications

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“…The collector efficiency th is plotted against the reduced temperature (Ti-Tamb)/G, by combining the two Eqns. (8) and (9) from the measured quantities (q, Cp, To, Ti, A, G), [5]. The intercept ( F R τα) and slope (F R U L ) represent the thermal efficiency of the collector at zero reduced temperature and energy losses of collector, respectively.…”

Section: Calculation Of Factors Andmentioning

confidence: 99%

“…In this work, we study the behavior of the sensor under the addition of an active convection using a fan supplied by a photovoltaic cell to pulse the air in the collector. The inclination of the support being fixed at the optimal Adrar latitude (28°), Algeria [9]. In addition, the realized solar collector is equipped by the inclination setting angle adjustment from 27° to 40°, this advantage allows to install it in different places and latitudes (such as Ghardaia, El-Bayadh and localities…).…”

Section: Introductionmentioning

confidence: 99%

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Design and Realization of an Air Solar Heater and Thermal Measurement

Abderrahmane¹,

Tamali²,

Houari³

et al. 2019

I2M

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This paper presents a solar air collector heater, which is a backup solution to reduce the energy costs caused with any other heating mode. The idea is to use solar energy for heating air and send it into the house. Solar air heating power technologies is entirely free, renewable and clean energy source, which limits the conventional energy costs increasing. These systems absorb direct sunlight to produce heat energy, and then it heats air which circulates throughout the building. In the autumn and winter, ventilation and heating requirements play an important role in the household budget. Solar air collectors are used to drive out moisture, improve air quality and provide free heating. This device can easily be integrated on roofs of a new building or added to an existing building where it reduces the amount of energy expended to heat the premises as a backup solution; thus, it can be put for drying of the agro-food products.

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Section: Calculation Of Factors Andmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design and Realization of an Air Solar Heater and Thermal Measurement

Abderrahmane¹,

Tamali²,

Houari³

et al. 2019

I2M

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“…The heat balance on the transparent cover of the distiller is given by the following equation [17,[20][21][22][23][24]:…”

Section: Figure 1 Distillation Heat Balancementioning

confidence: 99%

Monthly fresh water yield analysis of three solar desalination units a comparative study in the south Algeria climatic condition

Moungar¹,

Aberqi²,

Sahli³

et al. 2018

IJHT

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The Purpose of the paper is studied three types solar distillers, double slope with and without immersed fins and the simple solar distiller. A monthly comparative study is investigated experimentally, for a long period of the year. Further, the wind speed influence, the distance between fins, the fins height, the fins number and thickness, on the solar distiller's production, is investigated theoretically. From the obtained results, it is noted that for the wind speed greater than 3.5 m/s, a decrease in the productivity is caused by the cooling of the outer walls, and this induces some heat losses, especially at the front and rear walls of the solar still. The distance between fins has no significant effect on the still productivity. Moreover, increasing the fins height, from 2 to 5 cm, increase the productivity; however, when the height changes from 6 to 8 cm, the distillate production goes down. A larger fins number lead for rise the produced distilled water amount. Therefore, one should use the maximum number of fins, while taking into consideration the feasibility of the assembly. Increasing the water mass makes the productivity to go down. The obtained results on June 11, 2016, show that the proposed system productivity was about 15 to 27 % higher than that of a simple one, under the following conditions, i.e. Mw = 42.61 kg, h1 = 3.6 cm, Vw = 3.5 m/s, lw = 5 cm and Nfins = 12. The total annual cost estimation proof clearly that the payback period is less than a years. As well as, it has been found that the increasing lifetime and the interest rate decreasing caused a decrease in the distilled water unit price.

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“…In order to evaluate the efficiency of the slanted double-slope solar distillation unit (SDSD), solar intensity at the installation site was continuously recorded during the day. Other environmental parameters were also monitored including temperature at different spot inside the distillation system, wind speed, thermal conductivity and water height inside the distillation compartment [19]. Experimental data were used to numerically calculate the efficiency of the distillation unit through the Engineering Equation Solver (EES).…”

Section: Introductionmentioning

confidence: 99%

The Investigation of Heat Absorber on the Efficiency of Slanted Double-Slope Solar Distillation Unit

Pannucharoenwong¹,

Rattanadecho²,

Echaroj³

et al. 2020

IJHT

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A rise in utility consumption in rural areas have promoted the demand for the development of solar-based technologies for water purification system. This research aimed to develop a slanted double-slope solar distillation unit (SDSD) assisted by heat absorbers, which is employed as a distillation unit for generating clear distilled water from underground water. The prototype SDSD distillation unit developed in this research was evaluated based on production efficiency, productivity, distillation rate and temperature measured at different locations inside the device. Significant parameters that were varied included the types of heat absorber used (gasket, rubber, aluminum, high carbon steel and zinc) and the size of heat absorber (10 to 90% of surface area inside the SDSD). Results demonstrated an increase in the production of distilled water as the surface area of heat absorber decreases. This is because a reduction in surface area of the heat absorber allowed a more intense sunlight to enter the system. Maximum productivity peaked at 1.2 liter per day (24.9% efficiency). Monitored data in both the upper and bottom part of the distillation unit revealed the highest distillation rate at 15:00 each day. Distillation rate decreases with water height and insulator's thermal conductivity, but increase with water speed. Additionally, a mathematical model was proposed which was capable of accurately predicting the production efficiency and productivity as a function of the heat absorber's size and distillation time. Under the same operating conditions, aluminum was found to generate the best results relative to other types of heat absorber.

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Immersed fins influence on the double slope solar still production in south Algeria climatic condition

Cited by 14 publications

References 8 publications

Design and Realization of an Air Solar Heater and Thermal Measurement

Design and Realization of an Air Solar Heater and Thermal Measurement

Monthly fresh water yield analysis of three solar desalination units a comparative study in the south Algeria climatic condition

The Investigation of Heat Absorber on the Efficiency of Slanted Double-Slope Solar Distillation Unit

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