Review of cooling techniques using phase change materials for enhancing efficiency of photovoltaic power systems

Chandel, S.S.; Agarwal, Tanya

doi:10.1016/j.rser.2017.02.001

Cited by 224 publications

(65 citation statements)

References 39 publications

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“…In recent years, phase change materials (PCMs) as the thermal energy storage materials, have been studied and applied widely because of their high energy storage density and environmental friendliness. The representative applications include, but not limited to, temperature‐control building, solar energy utilization, and waste heat recovery …”

Section: Introductionmentioning

confidence: 99%

End group modification of polyethylene glycol (PEG): A novel method to mitigate the supercooling of PEG as phase change material

et al. 2018

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Summary Polyethylene glycol (PEG) is a kind of phase change material with high phase change enthalpy and good compatibility with the environment. However, there is relatively large supercooling for PEG, limiting their practical applications. To reduce their supercooling degree, herein we use three different small molecules (acryloyl chloride, acetyl chloride, and thionyl chloride) to modify PEG and study the effects of different end group modification on their phase change properties. Fourier‐transform infrared (FTIR) and proton nuclear magnetic resonance (1H‐NMR) spectroscopy are used to confirm the molecular structure of the PEG with different molecular weights and functionalities after chemical modification. Crystal structures of the PEG before and after the modification are verified by X‐ray diffractometry (XRD) method and show no change. Differential scanning calorimetry (DSC) results show that the end group modification is quite effective for mitigating the supercooling of PEG with double ‐OH end groups but not effective for PEG with mono ‐OH end group. The mechanism for the change of supercooling behavior is proposed. The costs of different modification methods are estimated and compared.

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Section: Introductionmentioning

confidence: 99%

End group modification of polyethylene glycol (PEG): A novel method to mitigate the supercooling of PEG as phase change material

et al. 2018

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“…In literature, implement of phase change material (PCM) materials including refrigeration and water in CPV system was often reviewed. 8,9 PCMs are typically classified in three groups: organic, inorganic, and eutectic. Salt hydrates are usually utilized in PV/T systems due to their excessive heat storage capability within limited operating temperature range.…”

Section: With Lensesmentioning

confidence: 99%

“…Both active and passive phase change cooling utilize latent energy to offer high heat transfer rate. In literature, implement of phase change material (PCM) materials including refrigeration and water in CPV system was often reviewed . PCMs are typically classified in three groups: organic, inorganic, and eutectic.…”

Section: Introductionmentioning

confidence: 99%

Comparative study of high concentrating photovoltaics integrated with phase-change liquid film cooling system

et al. 2019

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Summary In high concentrating photovoltaic systems, thermal regulation is of great importance to the conversion efficiency and the safety of solar cells. Direct‐contact liquid film cooling technique is an effective way of thermal regulation with low initial investment. Tilt of solar cells is common in concentrating solar systems. An evaluation of direct‐contact liquid film cooling technique behind tilted high concentration photovoltaics was performed using both experimental and computational approaches. In the experiment, deionized water was used as the coolant at the back of simulated solar cells. Solar cell inclination of 0° to 75° with inlet water flow rate of 100–300 L/hour and inlet temperature of 30°C to 75°C were experimentally investigated. A two‐dimensional model was developed using computational fluid dynamics technique and validated by experimental results. The effects of inclination on average temperature, temperature uniformity, and heat transfer coefficient were discovered in this paper. The results indicated that 20° is the optimum angle for liquid film cooling. In addition, optimum inlet width, temperature, and velocity for inclination over 30° are 0.75 mm, 75°C, and 0.855 m/s, respectively.

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“…They found that the efficiency of the PVT depends on the parameters such as Reynolds number, fin size, volume, and size of nanofluid. However, they failed to report the electrical and thermal output efficiency, which is a major challenge in the design of PVT system . The present study focuses on the effects of nanofluid in the enhancement of the energy efficiency of photovoltaic cell.…”

Section: Introductionmentioning

confidence: 96%

“…They concluded that copper oxide improves the thermal efficiency of the PVT system to appreciable levels. Chandel et al reviewed the role of PCM/PV and found that inorganic PCM has a great potential compared with the organic PV . They also presented the technical difficulties and challenges of PV panels.…”

Section: Introductionmentioning

confidence: 99%

Comparative study to use nanofluid ZnO and CuO with phase change material in photovoltaic thermal system

Manigandan

Kumar

2019

Int J Energy Res

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Summary In this study, the simultaneous use of nanofluid and phase changing material as a coolant for photovoltaic fluid collector system and its effects are investigated experimentally. Two types of nanofluid are taken for the consideration, that is, ZnO and CuO, which are water‐based fluid. The experiments are performed in five different types of photovoltaic thermal system conventional: PT, PVT (ZnO), PVT (CuO), PCM medium (PVT/PCM/ZnO), and PCM medium (PVT/PCM/CuO). The results are obtained for surface temperature, energy, and thermal efficiency, and it is compared with each other. Further, the effect of the nanofluid as the effective alternative for pure deionized water is measured. From the results, it is evident that the PVT/PCM/CuO system minted 15% high electric output compared with convention module. Furthermore, the addition of the CuO nanofluid increases the thermal output significantly up to 8% for PVT and 12% for PCM without energy consumption. It also found that the nanofluid increases the overall energy efficiency of the system compared with convention PV.

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Review of cooling techniques using phase change materials for enhancing efficiency of photovoltaic power systems

Cited by 224 publications

References 39 publications

End group modification of polyethylene glycol (PEG): A novel method to mitigate the supercooling of PEG as phase change material

End group modification of polyethylene glycol (PEG): A novel method to mitigate the supercooling of PEG as phase change material

Comparative study of high concentrating photovoltaics integrated with phase-change liquid film cooling system

Comparative study to use nanofluid ZnO and CuO with phase change material in photovoltaic thermal system

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