Solar energy 29 there is a strong need to look at various possible designs that can be implemented to improve the single slope solar still performance through increasing the production rate of distilled water. The thermal performance of the single slope solar still is examined and evaluated through implementing the following effective. Design, fabrication and testing of a modified single slope. Design and fabrication of a multistage solar still with. An experimental work is conducted on a single slope solar still. The solar still is an emerging water distillation technology gaining popularity among the scientific community. It has been observed that the passive solar still with inclination of 45 gives better performance both in winter and summer respectively. Abukhader, evaluating thermal performance of a single slope solar still, heat and mass transfer, no. In an active solar still, an extra thermal energy is fed to the water in the basin to create a.
These results show that the water mass water depth has an intense effect on the distillate output of the solar still system. In this research, a comparison is made among three units of solar water distillation m1, m2 and m3, where m1 is a passive solar still, m2 is a passive solar still coupled with flat plate collector and m3 is similar to m2 but it was provided with copper tube inside the still to realize the latent heat. The most economical and easy way to accomplish this objective is using solar still. Evaluating thermal performance of a single slope solar. Design and manufacture three solar distillation units and. It was observed that when the water depth increases from 0. Modeling and performance analysis of a single slope tilted solar still were investigated in this paper a computer simulation of the still is carried out to examine and predict its unsteadystate thermal performance. The suspended metallic or nonmetallic nanoparticles change the transport properties, heat transfer characteristics and evaporative properties of the base fluid, the aim of this paper is to analyze and compare the enhanced performance of a single basin solar still using nanofluids with the conventional water. The performance of the double basin double slope solar still was higher than the single basin double slope solar still under insulated and uninsulated conditions. Thermal model and characteristics of double slope solar still. Single slope solar still absorbs the thermal energy from sunlight to distillate polluted water into clean water in an enclosed space.
Maximum efficiency of the still with the wick surface is found as 42% while the efficiency of the conventional solar still is 33%. Modeling and performance analysis of a single slope tilted solar still were investigated in this paper a computer simulation of the still is carried out to examine and predict its. Experimental attempt was carried out to enhance the solar still productivity by means of agitation effect. Heat transfer energy balance model of single slope solar still author. The authors presented a com prehensive theoretical model with detailed heat transfer analysis. The increase in temperature of the brackish water was more with the active solar still compared to the traditional solar. Solar still coupled with evacuated tube collector with and. Nov 26, 2015 the most economical and easy way to accomplish this objective is using solar still.
Principal of heat transfer and energy balance were the governing equations for the operation of single slope solar still. Experimental attempt was carried out to enhance the solar still productivity by. It can also be helpful for the performance analysis of solar still for daynight period. Performance evaluation of a modified design of a single slope solar still. In this paper, a modification in design of a single slope solar still is presented and its performance is evaluated in allahabad climatic condition. Exergy analysis of double slope active solar still under forced.
A single slope solar still conventional still integrated with evacuated tube collector was fabricated with a basin area of 0. Thermal evaluation of regenerative active solar distillation. Thus, the temperature distribution in the single slope solar still was analysed using the explicit finite difference method. The thermal performance of the single slope solar hcw heat loss coefficient by convection from water still is examined and evaluated through implementing. Dev and tiwari 2124 have also reported that the nonlinear characteristic curves are best fit to predict the behavior of solar stills. They also reported that the performance of single slope was better than double slope pvtcpc active solar still on the basis of average daily productivity, thermal and overall thermal efficiencies if depth of water in the basin is higher than 0. The modified basintype doubleslope multiwick solar still was. Design and performance analysis of an innovative single basin. Experimental investigations were carried out on two single slope solar stills. Thermoeconomic performance of inclined solar water distillation systems. Effect of various parameters on different types of solar. Most of the water resources are under the stage of depletion.
Alhazmi, thermal performances of a single basin solar still. The provision of fresh water is becoming an increasingly important issue in many areas of the world. This required study on the modeling and transport parameters determination of basin solar still for an efficient design. Performance analysis of single slope solar stills at. Principal of heat transfer and energy balance were the governing equations for the operation of single slope solar. Modeling and analysis of unsteadystate thermal performance. Improving the performance of solar still using different. The distilled water productivity of the single basin single slope solar still is very low. Study shows that cfd is a powerful tool for the performance analysis of single slope solar still. Northern nigeria was used as a case study to evaluate the performance of the modified solar still. It also increase water temperature inside solarstll.
Design and performance analysis of an innovative single. Performance study of a single basin single slope solar. Design and performance analysis of a modified vacuum. Solar still is an economical and easy method for production of pure water. A performance optimize solar still using cfd analysis. Applications of thermal modeling of a solar still were reported by several researchers 1218.
Effect of various absorbing materials on the thermal performance of solar stills. Badran and abukhader 18 conducted an experimental work on a single slope solar still and evaluated its thermal performance under jordanian climate. Performance evaluation of single slope solar still augmented with the. Effect of various absorbing materials on the thermal performance of solar stills effect of various absorbing materials on the thermal performance of solar stills abdallah, salah. This cited by count includes citations to the following articles in scholar. Jun 01, 2009 effect of various absorbing materials on the thermal performance of solar stills effect of various absorbing materials on the thermal performance of solar stills abdallah, salah. Furthermore, the results obtained for the two single slope solar stills were analyzed using a statistical model a paired t test.
Productivity enhancement of solar still with pv powered heating. In country like india, single slope solar still is used. In an active solar still, an extra thermal energy is fed to the water in the basin to create a faster rate of. Modeling and designing of a novel labscale passive solar. General parameters affecting the performance of solar stills. The inclusion of internal mirrors improved the system thermal performance up to 30%, while stepwise basin enhanced the performance up to 180% and finally the coupling of the stepwise basin with sun tracking system gave the highest thermal performance with an average of 380%. Sep 16, 2006 an experimental work is conducted on a single slope solar still. Solar still is simple device to convert available saline water into drinkable water.
Evaluating thermal performance of a single slope solar still. Tiwari, thermal modeling based on solar fraction and experimental study of the annual and seasonal performance of a single slope passive solar still. Pdf evaluating thermal performance of a single slope. The distillation is one of the important methods of getting clean water from brackish and sea water using the free energy supply from the sun. Performance study of a single basin single slope solar still. Experimental study of the enhancement parameters on a single slope solar still productivity, desalination, 209 2007, pp. Hence 4mm thickness of glass cover is suitable for solar still to get maximum productivity. Evaluating the performance of single slope passive solar still for different slope of cover and water depths by thermal modeling. Clean water is a basic human necessity, and without water life will be impossible. Thermal efficiency and exergy analysis for evaluating the thermal performance of double slope active solar still under forced circulation mode were carried by sethi and dwivedi 7. Studied the performance of solar still of a hybrid photovoltaic thermal pvt system. Mar, 2018 this research is intended to design and manufacture a multilayer solar distiller at a promising cost. Design and fabrication of a multistage solar still with three.
This paper describes the operation, the energy balance, the construction and tests of a prototype of single slope solar distiller used to determine the influence of temperatures, thickness of condenser and water level inside the collector on thermal efficiency of the process of water distillation. Analysis and modelling of single slope solar still at. In this paper, thermal efficiency and exergy analysis are carried out for evaluating the thermal performance of double slope active solar still under. Effect of various absorbing materials on the thermal. Pdf experimental evaluation of a single slope solar still. Pdf performance analysis of single slope solar still. Pdf evaluating thermal performance of a single slope solar still.
The solar distiller manufactured has the same design as simple water distillers, which are based on the principle of evaporation and condensation with a different energy cycle, where the processes of evaporation and condensation are completely isolated. Evaluating thermal performance of a single slope solar still, heat and mass transfer, vol. Single slope solar still above figure presents a schematic diagram of the solar still used in the present experimental study. Ebaid1 and handri ammari2 abstract jordan lies in high solar insolation band and the vast solar potential can be exploited to convert saline water to potable water. The thermal modeling have been done by using the imperial. Experimental evaluation of a single slope solar still.
The three types were exfoliated graphite flakes with wick type a, carbon foam. Mainly, they have single and double slope solar collectors. Derived an analytical expression for the thermal efficiency for open. Performance evaluation of single slope solar still. It consists of a stainless steel basin, which has an effective area of 1m 2. Performance evaluation of a modified design of a single. This work aimed to explore a new technique for improving the performance of solar stills sss through utilizing three different types of a new hybrid structure of heat localization materials hshlm floating on the water surface to increase the evaporation rate as well as water production and minimize heat losses.
Distillation, distiller design, thermal efficiency, solar energy, solar radiation. Performance evaluation of a modified design of a single slope solar. Design and fabrication of a single slope solar still with variable collector angle. Jordan lies in high solar insolation band and the vast solar potential can be exploited to convert saline water to potable water. Jul 15, 20 among these types are the single slope with passive condenser, double condensing chamber solar still, vertical solar, and conical solar still. The effect of the water depth on the productivity for single and double basin double slope glass solar stills. Proceedings of the asme 2006 international solar energy conference. Experimental study of the enhancement parameters on a single slope solar still productivity.
There is a strong need to look at various possible designs that can be implemented to improve the single slope solar still performance through increasing the production rate of distilled water. Performance evaluation of single slope solar still augmented with. Evaluating thermal performance of solar cookers under jordanian climate. Improving the performance of single slope solar still by. The rapid international developments, the industrial growth, agriculture and population explosion all over the world have resulted in a large escalation of demand for fresh water.
The thermal efficiency of a solar distiller is defined as the quotient between the heat transferred from the evaporator to the condenser by evaporationcondensation mechanism. A modified single slope solar still was designed, fabricated and. Conventional solar still, single slope still, still productivity, still performance, wick surface. Computeraided design, modeling and simulation of a new solar. Abukhader, evaluating thermal performance of single slope solar stills. In order to select the variables that influence the performance of the solar distiller, simulations are performed. Kiam beng yeo, cheah meng ong and kenneth tze kin teo subject. Temperature distribution of single slope solar still by. Pdf evaluating thermal performance of a single slope solar. May 22, 2014 when inverted type absorber plate was used thermal efficiency of single slope solar still was increased by 7 %. The daily thermal efficiency of solar still varies from. The outcomes clearly suggest that, there is no significant difference between the distillateof still a efficiency of 42% and still b efficiency of 39%.
Design modifications were introduced to the conventional solar. The improvement of the performance of this basin type solar still is described in details experimentally in part1, by the author. Thermal modeling and efficiency of solar water distillation. In this work, the experimental modification was carried out in the single basin single slope solar still to improve the performance. Evaluating the performance of single slope passive solar. Abstract this work presents the development of a flexible, efficient, robust and low cost single solar still. Design modifications were introduced to the conventional solar still. Heat transfer energy balance model of single slope solar still. Achieving a high throughput andor performance in solar. Badran and abukhader 10 conducted an experimental work on a single slope solar still and evaluated its thermal performance under jordanian climate. This research is intended to design and manufacture a multilayer solar distiller at a promising cost.
When inverted type absorber plate was used thermal efficiency of single slope solar still was increased by 7 %. The implications of the results from the design are discussed for the otential devel p opment of a robust and dynamic single slope solar still system with variable collectorinclination angle. Water collected kgsolar irradiance kw water mass solar irradiance. Design and fabrication of a single slope solar still with.
Computeraided design, modeling and simulation of a new. This paper presents the theoretical analysis of a new concept basin type solar still with added helical wires packing layer subjected to a vibratory effect. Theoretical and experimental performance evaluation of single. A thermal model for predicting the performance of a solar still with.
Abukhaderc, performance evaluation of a modified design of a single slope solar still, desalination 219 2008 222230. The thermal performance of the single slope solar still is evaluated by the following effective parameters such as insulation thicknesses, solar intensity, overall heat loss, and effective. Conventional solar still singal slop solar still double slope solar still symmetrical non symmetrical new design of solar still inclined solar still active solar stills in an active solar still, an extra thermal energy is fed to the water in the basin to create a faster rate of evaporation. Conventional solar still, single slope still, still productivity, still.
Now days, lack of drinking water is majour problem in most of the countries. Single slope solar still, cfd introduction now days, lack of drinking water is majour problem in most of the countries. Performance evaluation of a modified design of a single slope. Among these types are the singleslope with passive condenser, double condensing chamber solar still, vertical solar, and conical solar still. The heat transfer coefficients were evaluated by using a thermal model. Side view of solar still is aligned with a mesh system, which accommodates nodes and specific equation to calculate the temperature at the next timestep for every derived node. This transient mathematical model was used by akash b. Optimization the performance of single basin solar still with. Request pdf evaluating thermal performance of a single slope solar still the distillation is one of the important methods of getting clean water from brackish. Optimization the performance of single basin solar still. Design and performance analysis of a modified vacuum single basin solar still. Kiam beng yeo, cheah meng ong and kenneth tze kin teo. The thermal performance of the single slope solar still is examined and evaluated through implementing the following effective parameters.
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