Phase change material as a heat sink for solar photovoltaic: A numerical study on the thermo‐physical properties and thickness effects under actual weather conditions DOI Open Access
Deepak Kumar Sharma, Purnanand V. Bhale, Manish K. Rathod

et al.

Energy Storage, Journal Year: 2023, Volume and Issue: 6(1)

Published: Nov. 20, 2023

Abstract This numerical study examines the thermal performance of solar photovoltaic (PV) with phase change material (PCM) as a heat sink under real ambient conditions. A mathematical model is developed to assess comparability between PV and PCM in one‐dimensional unsteady state condition. The influence properties such density, conductivity, melting point temperature, latent on module analyzed. impact altering layer thickness also explored. Results show that PV‐PCM system can keep nominal operating temperature for longer duration energy generation, which enhances efficiency lifespan module. peak cell conventional without 81.8°C at 12.15 pm , while PCM, it 74.8°C 12.40 indicating reduction 6.9°C or 9.3%. deviation maximum standard systems 24.8°C 35% diminished achieved 10 am .

Language: Английский

Numerical investigation of the effect of an air layer on the melting process of phase change materials DOI Creative Commons
Abbas Fadhil Khalaf, Farhan Lafta Rashid, Mudhar A. Al‐Obaidi

et al.

Materials for Renewable and Sustainable Energy, Journal Year: 2024, Volume and Issue: 13(3), P. 291 - 305

Published: May 14, 2024

Abstract Designing more effective thermal energy storage devices can result from understanding how air layers impact the melting process. The total efficiency of these systems be improved by optimizing process phase change materials (PCMs), which are utilised to store and release energy. current study utilises an analysis evaluate layer would affect PCM. enthalpy-porosity combination based ANSYS/FLUENT 16 software is specifically used accomplish this study, considering paraffin wax (RT42) as reveal that presence dissolution This assured increase time PCM 125% a having 5 cm thickness compared cell without layer. Furthermore, beyond has progressive effect on One important component affects existence above cell. Greater heat transfer resistance thicker prolongs needed finish melting. efficient transmission shown reduced when there gradually slows down rises, reflects decreased transmission. These results highlight crucial it take environment into account while creating PCM-filled cells.

Language: Английский

Citations

7
Investigation of Thermal Performance of Optimized Tree-Shaped Fins in Latent Heat Storage Units DOI
HE Zhao-yang, Yang Li,

Wei Yang

et al.

Heat Transfer Engineering, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 15

Published: July 3, 2024

Language: Английский

Citations

2
Novel designs for PCM passive heat sink of concentrated photovoltaic cells to enhance the heat transfer rate: presenting 4E analyses DOI
M. Moein‐Jahromi,

S. Rahmanian,

Hossein Rahmanian‐Koushkaki

et al.

Journal of Thermal Analysis and Calorimetry, Journal Year: 2023, Volume and Issue: 149(4), P. 1667 - 1695

Published: Dec. 21, 2023

Language: Английский

Citations

4
A Laser Interference-based Flaw Detection Device for Hydraulic Turbine Units DOI
Fulin Zhou,

Xiaoting Sun,

He Geng

et al.

2022 4th Asia Energy and Electrical Engineering Symposium (AEEES), Journal Year: 2024, Volume and Issue: 35, P. 1 - 4

Published: March 28, 2024

Hydroelectric turbine generator sets play a key role in power production as important energy devices. However, the complexity of its internal structure makes it susceptible to threat defects such cracks, which may pose serious risk safety and reliability equipment. Although traditional ultrasonic flaw detection methods are widely used, their application is limited when faced with problems high cost, low efficiency, unclear display defects. Therefore, this study aims solve these improve efficiency accuracy defect through development laser interference-based device for hydro sets. The core idea detect external hydraulic unit by analyzing position shape interference fringes using principle. We describe detail system components device, including scanning system, data acquisition processing well working Through experimental verification, proved that has advantages precision provides new effective tool operation maintenance hydropower plants.

Language: Английский

Citations

0
Research on Installing Air Gap Monitoring Device Based on 4D Millimeter Wave Technology DOI
Wei Han, Cheng Li,

Zhuang Lin

et al.

2022 4th Asia Energy and Electrical Engineering Symposium (AEEES), Journal Year: 2024, Volume and Issue: 45, P. 524 - 528

Published: March 28, 2024

In terms of hydro-generator sets, it is difficult to perform the air gap monitoring in process rotor hoisting during installation and construction or maintenance hydropower plant, If distribution not uniform, distance between armature magnetic pole will be inconsistent, making flux uneven, resulting output power instability, which affect load grid; The uneven also capacity generator; lead noise generator operation; When make motor produce electric field current distribution, leading excessive heat, thus increases temperature reduces life motor. It has a great impact on economic benefits hydro-power plants local people. view limitations, method based 4D millimeter wave radar proposed. First, was used scan fixed obtain point cloud data, heterogeneous data fusion analysis homogenous sensor data. Finally, construct model conduct analysis. This can monitor real time installation. equipment advantages easy layout, operation high accuracy, greatly workload operators, shortens time, saves precious for lifting rotor.

Language: Английский

Citations

0
Research on Temperature Monitoring Technology of Thrust Bearing Bush of Water Turbine Based on Intelligent Temperature Algorithm DOI

Zhuang Lin,

Li Cheng,

Wei Han

et al.

2022 4th Asia Energy and Electrical Engineering Symposium (AEEES), Journal Year: 2024, Volume and Issue: 22, P. 297 - 301

Published: March 28, 2024

In view of the problems large temperature deviation and no design warning in thrust bearing measurement process hydraulic turbine generator, which affect its accuracy timeliness, multiple linear regression is introduced to carry out research method generator. Through RS485, based on intelligent algorithm model construction, alarm response added, a new tile proposed. comparative experiment, it proved that compared with traditional method, obviously controlled, early results are so has higher timeliness.

Language: Английский

Citations

0
Phase change material as a heat sink for solar photovoltaic: A numerical study on the thermo‐physical properties and thickness effects under actual weather conditions DOI Open Access
Deepak Kumar Sharma, Purnanand V. Bhale, Manish K. Rathod

et al.

Energy Storage, Journal Year: 2023, Volume and Issue: 6(1)

Published: Nov. 20, 2023

Abstract This numerical study examines the thermal performance of solar photovoltaic (PV) with phase change material (PCM) as a heat sink under real ambient conditions. A mathematical model is developed to assess comparability between PV and PCM in one‐dimensional unsteady state condition. The influence properties such density, conductivity, melting point temperature, latent on module analyzed. impact altering layer thickness also explored. Results show that PV‐PCM system can keep nominal operating temperature for longer duration energy generation, which enhances efficiency lifespan module. peak cell conventional without 81.8°C at 12.15 pm , while PCM, it 74.8°C 12.40 indicating reduction 6.9°C or 9.3%. deviation maximum standard systems 24.8°C 35% diminished achieved 10 am .

Language: Английский

Citations

0