State-of-the-Art Solar Collectors: Typical Parameters and Trends

Frid, S. E.; Lisitskaya, N. V.

doi:10.3103/s0003701x18040059

Cited by 16 publications

(2 citation statements)

References 4 publications

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“…When comparing these two, the direct radiation component has a more effective solar thermal energy intensity value compared to that of the diffused radiation component. Therefore, a higher value of the direct radiation component results in a larger value of useful energy harnessed by the solar collector [41]. In this paper, the plate is made of copper or steel to ensure good thermal conductivity and the surface is treated with dark and opaque material to reduce reflection and increase absorption.…”

Section: Flat-plate Collectorsmentioning

confidence: 99%

A Comparative Study on the Performances of Flat Plate and Evacuated Tube Collectors Deployable in Domestic Solar Water Heating Systems in Different Climate Areas

Greco

Gundabattini

Gnanaraj

et al. 2020

Climate

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Using TRNSYS software, a comparison of the energy performances of flat-plate collectors (FPCs) and evacuated-tube collectors (ETCs) in domestic solar water heating systems located in different climate areas was carried out in order to ascertain solar energy utilization. Investigations were carried out on single FPCs and ETCs and also for strings of four panels connected in series. Tests were conducted using simulations for water as heat transfer fluid with a fixed fluid flow rate and varying the temperature of the collector’s returning fluid. The maximum power peak decreases with the increase in the inlet temperature of the fluid to the collector in the FPC. The maximum outlet temperature of the FPC is higher than the ETC, most of the time. The evacuated-tube collector performs better only in cold climate areas. Simulations suggest that the use of the FPC is strongly discouraged in cold climatic areas due to thermal losses, whereas the ETC works well with reduced dispersion of heat. In warm seasons, on the contrary, the FPC takes advantage of the high environmental temperature which heats the fluid. The maximum yearly outlet temperature and useful power peak predicted in different climatic areas were investigated by varying the temperature of the fluid inlet fed to the two strings of four FPCs and ETCs. In all cases, the outlet temperature is higher in the ETC technology.

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Section: Flat-plate Collectorsmentioning

confidence: 99%

A Comparative Study on the Performances of Flat Plate and Evacuated Tube Collectors Deployable in Domestic Solar Water Heating Systems in Different Climate Areas

Greco

Gundabattini

Gnanaraj

et al. 2020

Climate

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“…Therefore, there is a need to develop alternative (renewable) energy sources to ensure sustainable energy supplies to consumers, as well as to reduce local and global environmental pollution [1][2][3][4]. There are many works in the literature devoted to optimization and increasing the efficiency of photovoltaic converters [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

The use of ionistors instead of batteries in solar energy

Kanareykin

2023

E3S Web Conf.

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Today, the use of solar panels is becoming widely used. At the same time, accumulators act as accumulators of the generated solar energy. The article suggests using an ionistor as a storage option. Unlike a battery, the ionistor is most effectively charged not with a constant voltage, but with a current, and with the maximum, i.e. with everything that is only able to give the source. For an energy source, a discharged ionistor is a short-circuited load. Just solar cells can operate at zero resistance, which means they are able to charge the ionistor from scratch. The analysis of the problem of using this method is carried out. The article provides connection diagrams, as well as formulas for calculating charging characteristics.

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