Experimental Investigation on Improving the Heat Transfer of Cascaded Thermal Storage System Using Different Fins

Beemkumar, N.; Karthikeyan, A.; Devarajan, Yuvarajan; Sankar, S. Lakshmi

doi:10.1007/s13369-017-2455-9

Cited by 21 publications

(4 citation statements)

References 20 publications

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“…An experimental investigation on improving the heat transfer of cascaded thermal storage systems using different fins was done by Beemkumar et al [88]. The parabolic trough collector was used as a solar collector, with three storage tanks that contained Therminol-66 that was used as the heat transfer fluid.…”

Section: Parabolic Trough Cookers With Lhtesmentioning

confidence: 99%

“…The results showed that performance parameters such as thermal efficiency and the useful energy gain rate increased as the solar insulation increased, and this was evidence that it can be utilized for cooking and heating applications. Beemkumar et al [88] performed a comparative experimental study on a parabolic trough collector integrated with a thermal energy storage system by using different reflective materials. The parabolic trough collector system was mainly composed of a parabolic trough collector, a storage tank that contained Therminol-66 oil which was used as the heat transfer fluid, D-mannitol, and a displacement pump to circulate Therminol-66 oil throughout the system.…”

Section: Parabolic Trough Cookers With Lhtesmentioning

confidence: 99%

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A review of parabolic solar cookers with thermal energy storage

Lentswe¹,

Mawire²,

Owusu³

et al. 2021

Heliyon

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Biomass and fossil fuels are mostly used in rural areas of developing countries for cooking. These energy resources have negative impacts on the environment and human health mainly due to deforestation and greenhouse gas emissions. A cleaner and environmentally-friendly form of cooking is solar cooking using the sun's energy. Parabolic solar cookers perform better than other solar cookers such as box solar cookers since higher temperatures are achieved in a shorter duration. These higher temperatures allow most types of cooking processes such as; boiling, frying, roasting, and baking to be possible. The major problem with most conventional solar cookers is that cooking is not possible during off-sunshine periods. Integrating solar cookers with thermal energy storage (TES) makes cooking during off-sunshine periods possible. This paper presents a comprehensive review of parabolic solar cookers with TES which is a sustainable cooking solution for developing countries. Previous work on both parabolic trough and parabolic dish solar cookers with TES is presented. Solar cookers with storage are classified according to the two main types of TES technologies which are; sensible heat thermal energy storage (SHTES) and latent heat thermal energy storage (LHTES). The main conclusions of the review are that; parabolic dish solar cookers with TES are more common than parabolic trough cookers, more studies have been done using latent heat storage as compared to sensible heat storage, limited modelling work has been presented, most of the parabolic cookers used aluminum sheets as the reflecting material, large scale experimental studies are limited and fewer studies tackled the techno-economic and socio-economic aspects. The review also highlights research gaps on parabolic solar cookers with TES in terms of the modelling, combined TES (sensible and latent heat), different reflector materials, large-scale experimental setups, and techno-economic and socio-economic analyses. Other important aspects to consider for parabolic solar cookers with TES include; the choice of sensible or latent heat storage materials, environmental impact, types of food to be cooked, and social acceptance.

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Section: Parabolic Trough Cookers With Lhtesmentioning

confidence: 99%

Section: Parabolic Trough Cookers With Lhtesmentioning

confidence: 99%

A review of parabolic solar cookers with thermal energy storage

Lentswe¹,

Mawire²,

Owusu³

et al. 2021

Heliyon

View full text Add to dashboard Cite

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“…The charging and overall efficiency of the system is calculated based on Eqs. (5) and (6), and the values are Fig. 7.…”

Section: Charging and Overall Efficiency Of The Systemmentioning

confidence: 99%

“…The phase change material (PCM) is used to store and release the solar energy by undergoing the phase transformation from liquid state to solid state, respectively, and vice versa [1]. There are many studies which are available in the field of the PCM-based solar energy storing system [2][3][4][5][6][7][8][9][10] although researchers are currently searching for the best PCM and to increase the performance in the TES system. Several types of PCMs have been tested in the TES system such as organic, inorganic, and eutectic mixture [11][12][13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

The thermal performance analyses of the solar energy-powered thermal energy storage system with MgCl2·6H2O as PCM

Saikrishnan

Karthikeyan

Beemkumar

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

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This work analyzes the thermal performance of the solar energy-powered thermal energy storage (TES) system with MgCl 2 •6H 2 O as a phase change material (PCM). The PCMs are encapsulated in the copper cylindrical containers which have longitudinally extended surfaces on the outer periphery. The encapsulated cylindrical containers are arranged vertically in the TES tank. The experiments are conducted to find the energy gained by the heat transfer fluid (HTF) from the collector and the energy storage capacity in the TES tank during the charging process of PCM. It is seen that the temperature variation of PCM between 8:00 and 9:00 h is very slow due to the low thermal response of the components in the experimental setup. The HTF temperature rise is at a faster rate till 12:00 h due to increase in solar radiation value which is raised from 380 to 930 W m −2. Also, the maximum energy gained by the HTF from the collector is 14,330 kJ at 13:30 h which has 6109 kJ energy difference than the energy accumulation in the TES tank due to the lower thermal behavior of the devices in the system. The maximum efficiency of the collector is 72.53% between 13:00 and 14:00 h, after that the efficiency decreases with the increase in time due to the decrease in the solar intensity value. The performance of the system could be improved by using high-reflective material in the solar collectors and also by the use of higher thermal conductivity heat exchange materials.

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