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Experimental investigation of a hemispherical solar collector ...

The results show that the maximum thermal efficiency of the solar collector is 86.8% and the maximum average temperature of the fluid around the heat …

Quasi-waffle solar distiller for durable desalination of seawater

Water, energy, and food lie at the heart of the sustainable development goals according to the United Nations (1–3).Two-thirds of the world''s population currently faces water scarcity for at least 1 month year −1, and every 2 min, a child dies from water-, sanitation-, and hygiene-related diseases () eshwater resources are even suffering …

Study and Characterization of a Spherical Solar Collector. I ...

This paper studies and characterizes a solar collector with spherical geometry to produce hot water for sanitary and domestic applications and other facilities. …

Experimental study of an absorber coil in spherical solar collector ...

In the current study, a new kind of solar stationary, symmetric collector in the figure of solar water heater, namely spherical collector in the form of an absorber …

Experimental Investigation of the Efficiency of a Semi

It is seen in the figures that hourly efficiencies of the spherical solar collector are greater than those of the flat plate collectors under these experimental conditions (Tf ≤ 34.4 °C), Tf is the water temperature within the spherical collector. ... when the collector''s high efficiency is required, the flow rate should be high. As time ...

(PDF) Development of a Spherical Solar Collector with …

The current study experimentally investigates the performance of a stationary newly designed hemi-spherical solar collector in comparison with a flat plate solar collector with the same...

Thermal performance enhancement in parabolic trough solar collectors …

Parabolic trough collectors are among the most mature solar concentrating technologies which are applied in numerous applications. The enhancement of their performance is a crucial issue in order ...

An experimental study of a hemi-spherical solar collector under ...

Solar energy as a source of renewable energy has been acknowledged to be a potential source of heat for domestic and industrial purposes. This paper analyzes the efficiency of different solar collectors and the determining factors affecting the efficiency of collectors, and presents them as pre the choice of collectors at the user end for cost and …

Experimental investigation of a hemispherical solar collector ...

The maximum thermal efficiency of the solar collector was 60%, and the maximum output temperature of the solar collector was recorded at 77.1 °C. Bakir …

An experimental study of a hemi-spherical solar collector under ...

The Hemi-spherical solar collector shows a higher maximum efficiency of 69% whereas the flat plate solar collector only reaches a maximum of 42%, showing an increase of 27%. The average efficiency of the flat plate collector is 31%, compared to …

Flux profile at focal area of concentrating solar dishes

To find which type of dish has a higher efficiency, we offer an experimental study which can compare the thermo-optical performances of a …

Innovative Approach of Concentrated Solar Sphere to …

The motivation of this paper is to design an innovative solar sphere system, which is a new concentrated photovoltaic technology that has better …

(PDF) A Design of Spherical Refractive Solar Collector with Low ...

In this paper, an even low-magnification by light solar concentrator with the use of the spherical mirror''s refraction is designed. The calculation of the concentration ratio and the volume of the ...

An experimental study of a hemi-spherical solar collector under ...

The hemi-spherical collector showed a more constant hourly efficiency distribution which makes the spherical solar collector a more reliable source of heating throughout the day, unlike the flat ...

Flux profile at focal area of concentrating solar dishes

We analytically, experimentally and computationally explore the solar radiation flux distribution in the interior region of a spherical mirror and compare it to that …

Thermal performance enhancement in a solar parabolic trough collector …

The parabolic trough collector (PTC) is a matured and an important category of concentrating-type solar collector which provides temperature in the range of 200 to 400 °C (Tiwari et al. 2021) with higher thermal efficiency compared to other concentrating-type collectors.

Development of a Spherical Solar Collector with a cylindrical

Spherical solar collector is an attractive method to concentrate direct beam radiation which converts it to thermal energy in a useful form for electrical power generation [1].

Solar Collectors | Types, Advantages, and Disadvantages

Advantages of Solar Collector. Renewable Energy: Solar collectors use energy from the sun, which is a limitless and renewable resource. Good for the Environment: They help reduce pollution and lessen the need for fossil fuels, making the planet cleaner. Saves Money: Solar collectors can cut down on energy bills, especially in sunny areas.

Innovative Approach of Concentrated Solar Sphere to …

Concentrated photovoltaics (CPV), long a niche technology, has now matured and shown to be reliable enough for large-scale power generation. The …

Journal of Energy and Power Technology

This paper studies and characterizes a solar collector with spherical geometry to produce hot water for sanitary and domestic applications and other facilities. The new geometry …

Experimental study of an absorber coil in spherical solar collector ...

The spherical solar collector is better than the optimal tilted flat-plate collector when its absorber surface is no less than twice of the flat-plate collector [28]. ... The development of PCM composites with high solar energy absorption efficiency and high energy storage density is the key to solar thermal storage technology. In this paper, …

A review on design parameters and specifications of parabolic solar ...

Generally, the CSP technology consists of a concentrating surface that upsurges the useful aperture and accurately focuses the solar irradiations in a small area, called the thermal receiver. The focusing solar collectors typically work at very high temperatures next to the non-focusing solar collectors.

Experimental study of an absorber coil in spherical solar collector ...

The spherical solar water heater instantaneous efficiency is defined as the ratio of the useful energy captured by the fluid to the solar radiation gained by the collector as per Eqs. (4), (5) . The maximum useful instantaneous efficiency in a spherical solar water heater is achieved as the entire absorber coil is considered at the …

(PDF) Efficiency of solar collectors – a review

Efficiency of solar collectors – a review. To cite this article: A G Lupu et al 2018 IOP Conf. Ser.: Mater. Sci. Eng. 444 082015. View the article online for updates and enhancements.

Experimental Investigation of Thermal Performance Evaluation of Solar ...

The significant influences of the tilt of solar collector, the mass flow rate of inlet water and the distance of air gap on the solar collector collection efficiency are investigated by CFD ...

State-of-the-art review of nanofluids in solar collectors: A review ...

The significantly growing needs of energy consumption in recent years have increased the efforts aiming towards a better exploitation of renewable energy resources and more efficient energy systems (Waheed et al., 2019), (Ahmed and Farman ALhialy, 2019) this regards, solar energy is one of the most valuable energy sources …

Solar Collector

The parabolic-trough solar collector is a kind of single axis tracking solar thermal collector which is capable of generating high temperature fluid with high efficiency. The PTC as shown in Figure 4 has a concentration ratio anywhere from 10 to 85 and a working temperature range of 50–400 °C ( Kalogirou, 2004 ).

Development of a Spherical Solar Collector with a Cylindrical …

The effects of mirror reflection, concentration ratio, heat transfer to the fluid (water), incidence angle, size and form of the cylindrical receiver, environmental …

Experimental investigation on the performance of spherical solar ...

A spherical solar collector reported by Mahmoud Ahmed Elhefnawy, et al. claims to have the collector efficiency factor of about 0.924 and overall heat transfer coefficient as 7.8 W/m2℃ [19]. A ...

Numerical and experimental analysis of a point focus solar collector ...

The collector efficiency factor and collector heat removal factor were derived for the cavity receivers to find out heat transfer mechanism and to propose an effective way for evaluating the ...

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