Experimental analysis of a photovoltaic/thermoelectric generator using cobalt oxide nanofluid and phase change material heat sink

Rajaee, Fatemeh; Rad, Mohammad Amin Vaziri; Kasaeian, Alibakhsh; Mahian, Omid; Yan, Wei‐Mon

doi:10.1016/j.enconman.2020.112780

Cited by 138 publications

(43 citation statements)

References 34 publications

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“…Thermoelectric generators are studied with focus in recent research on microchannel heat pipe arrays and PCM. In some cases, using a PV/T‐TEG with cobalt nanofluid and enhanced PCM increased the exergy efficiency by 11.6% over a similar system using water 180 The overwhelming majority of research on the technology of PV/T is carried out using silicon based photovoltaic solar cells.…”

Section: Discussionmentioning

confidence: 99%

“…In some cases, using a PV/T-TEG with cobalt nanofluid and enhanced PCM increased the exergy efficiency by 11.6% over a similar system using water. 180…”

Section: Discussionmentioning

confidence: 99%

“…Rajaee et al 180 experimentally investigated the performance of a PV/TEG system with cobalt nanofluid and PCM. The authors used six TEG devices which were attached to the aluminum sheet at the back of the PV.…”

Section: Application Of Fluids In Pv/tmentioning

confidence: 99%

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A review of photovoltaic thermal systems: Achievements and applications

et al. 2020

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Summary The use of photovoltaics has spread widely, and government agencies have begun adopting plans to deploy plants with large capacities, due to their environmental friendliness, low manufacturing costs, and high productivity. In the sunny countries where this technology should spread, the photovoltaics' energy conversion efficiency decreases due to the high temperature of which the cell's operate at; because a large part of the solar radiation is absorbed by the solar panels as heat, while the smaller part converts it to electricity. From here, the benefit of the shift towards the PV/T technology that works to reduce the photovoltaic modules temperature and improve their electricity produced along with yielded thermal energy which can be utilized in other applications. In this study, a thorough review of many recent research and studies published in the field of PV/T has been carried out. The present study was divided into several sections to clarify and focus on the effect of each technology separately. Researchers used one or more fluids to cool the solar panels, and their research dealt with many of these fluids, starting with air, water, oil, etc. Other researchers have tended to increase the thermal conductivity of liquid cooling fluids by adding many types of nanoparticles with high thermal conductivity. Other researchers have used variable‐phase materials to take advantage of the large storage of the latent heat of these materials. Other researchers have studied improving heat transfer of PCMs by mixing it with nanomaterials with high thermal conductivity. Others have also combined nano‐PCMs and nanofluids together in one system, and they have demonstrated, in theory and practice, that this technique exhibits higher energy collection and utilization than the other types of PV/T. At the conclusion of the study, some critical points are identified that work is still limited and needs more research efforts and studies.

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Section: Discussionmentioning

confidence: 99%

“…In some cases, using a PV/T-TEG with cobalt nanofluid and enhanced PCM increased the exergy efficiency by 11.6% over a similar system using water. 180…”

Section: Discussionmentioning

confidence: 99%

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A review of photovoltaic thermal systems: Achievements and applications

et al. 2020

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“…Rajaee et al 37 investigated experimentally the performances of a PV/TEG hybrid system using six cooling methods including water and 0.25%, 0.5%, and 1% nanofluid flow, and 1% nanofluid flow with pure PCM and PCM with alumina powder. The obtained result indicated that the electrical performances of a hybrid system using Co 3 O 4 /water nanofluid with 1% nanoparticle concentration were improved by 10.91% compared to water.…”

Section: Introductionmentioning

confidence: 99%

Energy performance investigation of nanofluid‐based concentrated photovoltaic / thermal‐thermoelectric generator hybrid system

et al. 2021

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Nanofluid can be used in a CPV/T solar collector to boost electrical and thermal performances as this technology has drawn great attention from researchers over the last decades. In a CPV/T system, the amount of collected heat could be significantly higher than the amount of electrical power. Combining thermoelectric generator (TEG) and nanofluid-based CPV/T system may result in better electrical performance than CPV/T system alone. In the present work, a nanofluid-based CPV/T-TEG hybrid system with a cooling channel was designed and tested, and the obtained performance was compared with conventional cooling methods [ie, natural cooling (CPV/TEG) and water cooling (WCPV/T-TEG) methods]. At the optimum value of solar concentration, C = 14.6, the electrical performance of the nanofluid-based concentrated photovoltaic/thermal-thermoelectric generator (NCPV/T-TEG) configuration was found to be 89% higher than the standard PV modules. For the same

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“…They used Al2O 3 , CuO and SiO 2 nanoparticles to increase the thermal conductivity of PCMs. Kasaeian et al [ 17 ] investigated the effectiveness of simultaneous usage of the Co 3 O 4 /water nanofluid and examined phase change material (paraffin wax/Alumina powder) as a cooling method. Kasaeian et al [ 18 ], in another study, investigated the thermal performance of a photovoltaic/thermal system, integrated with phase change materials in a porous medium.…”

Section: Introductionmentioning

confidence: 99%

Exergoeconomic analysis of photovoltaic thermal systems based on phase change materials and natural zeolites for thermal management

Kandilli

Uzel

2021

J Therm Anal Calorim

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Conventional photovoltaic thermal (PVT) systems provide unstable thermal energy, which changes throughout the day. In PVT systems, phase change materials (PCMs) and heat storage materials could be used to make thermal energy more stable and provide longer-term thermal energy. In the present study, exergoeconomic analysis of PVT systems integrated with natural zeolites has been firstly carried out, and the results were compared with the results of PVT systems integrated with PCM and conventional one. PVT systems integrated with paraffin and stearic acid, common PCMs and conventional PVT systems were analyzed by specific exergy costing method, systems were compared exergoeconomically and suggestions were made to improve the economic performance of PVT systems. As a result of the analyzes conducted with 297 data obtained experimentally, the average energy efficiencies were calculated as 33%, 40%, 37% and 32% for paraffin, natural zeolite, stearic acid and conventional PVT system, respectively. Besides, average exergy efficiencies were 24%, 24%, 22% and 22% for paraffin, zeolite, stearic acid and conventional PVT system, respectively. The average entropy generation of the PVT based paraffin; natural zeolite, stearic acid and conventional one were found as 2.11, 2.29, 2.18 and 2.07 W K −1 , respectively. According to the exergoeconomic analysis, specific exergy flow cost values were found as 0.206, 0.176, 0.204 and 0.206 € kWh −1 for the PVTs based on paraffin, natural zeolite, stearic acid and the conventional PVT. It was concluded that the natural zeolite-based PVT system was found as the best system exergoeconomically.

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Experimental analysis of a photovoltaic/thermoelectric generator using cobalt oxide nanofluid and phase change material heat sink

Cited by 138 publications

References 34 publications

A review of photovoltaic thermal systems: Achievements and applications

A review of photovoltaic thermal systems: Achievements and applications

Energy performance investigation of nanofluid‐based concentrated photovoltaic / thermal‐thermoelectric generator hybrid system

Exergoeconomic analysis of photovoltaic thermal systems based on phase change materials and natural zeolites for thermal management

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