Solar pv system with pulsating heat pipe cooling

<span>Malaysia is blessed with high irradiance, making it suitable for solar photovoltaic installation for electricity generation. However, due to the broad wavelength of the solar irradiance, not all wavelength can be converted to electricity due to the limitation of the materials used for the photovoltaic. The infrared radiation absorbed produces heat, and coupled with high surrounding temperature, increases the temperature of the photovoltaic panel thus decreasing it efficiency. This paper presents the study of the effect of attaching pulsating heat pipe at the back of solar panel as a means of passive cooling. Pulsating heat pipe is a recent discovery in the heat pipe industry, introduced in 1996 by Akachi but has not been used for the purpose of cooling solar panels. This study shows the maximum difference between 5 Celsius between the pulsating heat pipe cooled panel and the reference panel without any cooling, resulting in 0.77% increase in electrical output efficiency</span><span>Malaysia is blessed with high irradiance, making it suitable for solar photovoltaic installation for electricity generation. However, due to the broad wavelength of the solar irradiance, not all wavelength can be converted to electricity due to the limitation of the materials used for the photovoltaic. The infrared radiation absorbed produces heat, and coupled with high surrounding temperature, increases the temperature of the photovoltaic panel thus decreasing it efficiency. This paper presents the study of the effect of attaching pulsating heat pipe at the back of solar panel as a means of passive cooling. Pulsating heat pipe is a recent discovery in the heat pipe industry, introduced in 1996 by Akachi but has not been used for the purpose of cooling solar panels. This study shows the maximum difference between 5 Celsius between the pulsating heat pipe cooled panel and the reference panel without any cooling, resulting in 0.77% increase in electrical output efficiency.</span>

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Experimental Investigation of the Effect of Gravity Assisted Heat Pipe on Photovoltaic Panel as Passive Cooling

Journal of Current Researches on Engineering, Science and Technology ◽

10.26579/jocrest.58 ◽

2020 ◽

Vol 6 (6 (2)) ◽

pp. 23-32

Author(s):

Engin ÖZBAŞ

Keyword(s):

Experimental Investigation ◽

Heat Pipe ◽

Passive Cooling ◽

Photovoltaic Panel

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Numerical Simulation of Aerodynamic Force on Solar Panels

Volume 6A: Energy ◽

10.1115/imece2013-63725 ◽

2013 ◽

Cited By ~ 1

Author(s):

Aklilu T. G. Giorges ◽

Guillermo J. Amador ◽

Kevin Caravati ◽

Joseph Goodman

Keyword(s):

Numerical Simulation ◽

Aerodynamic Force ◽

Navier Stokes ◽

Solar Photovoltaic ◽

Solar Panels ◽

Navier Stokes Equation ◽

Local Conditions ◽

Photovoltaic Panel ◽

Solar Arrays ◽

Turbulent Process

Significant cost reductions for solar photovoltaic systems can be realized through aerodynamic design improvements for ground mounted and rooftop installations. Current practices in the solar industry are based on ASCE-7 codes created for buildings and do not fully account for wind reduction strategies. Numerical simulation is one of the tools that can be used to evaluate wind loads and improve system designs while maintaining reliability and durability. As a first order analysis, we have numerically simulated a solar photovoltaic panel as a flat plate with an aspect ratio of 0.5, which includes the simulation of turbulence experienced by panels. The flow is simulated using the incompressible Navier-Stokes equation and the turbulent process is simulated using k–ε model. The numerical model and boundary conditions are derived from similar experimental wind tunnel experiments. The aerodynamic force is calculated from the integration of the normal and tangential pressure forces. The result of the numerical simulation shows that the wind load on a solar panel can be successfully simulated numerically and the simulation data can be used to evaluate redesigns of the system, allowing for the effective customization of solar arrays based on local conditions.

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Numerical Investigation on Heat Pipe Spanwise Spacing to Determine Optimum Configuration for Passive Cooling of Photovoltaic Panels

Energies ◽

10.3390/en12244635 ◽

2019 ◽

Vol 12 (24) ◽

pp. 4635

Author(s):

Samiya Aamir Al-Mabsali ◽

Hassam Nasarullah Chaudhry ◽

Mehreen Saleem Gul

Keyword(s):

Heat Pipe ◽

Heat Pipes ◽

Passive Cooling ◽

Photovoltaic Panel ◽

Photovoltaic Panels ◽

Optimum Configuration ◽

Renewable Power ◽

Cooling Mechanism ◽

Computational Fluid Dynamics Cfd ◽

Set Up

The uncertainty regarding the capacity of photovoltaics to generate adequate renewable power remains problematic due to very high temperatures in countries experiencing extreme climates. This study analyses the potential of heat pipes as a passive cooling mechanism for solar photovoltaic panels in the Ecohouse of the Higher Colleges of Technology, Oman, using computational fluid dynamics (CFD). A baseline model has been set-up comprised of 20 units, 20 mm diameter water-filled heat pipes, with a length of 992 mm attached to a photovoltaic panel measuring 1956 mm × 992 mm. Using the source temperature of 64.5 °C (337.65 K), the findings of this work have established that a temperature reduction in the range of up to 9 °C is achievable when integrating heat pipes into photovoltaic panels. An optimum spacing of 50 mm (2.5 times the diameter of the heat pipe) was determined through this work, which is also a proof-of-concept towards the use of heat pipe technology for passive cooling of photovoltaic panels in hot climates.

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An Innovative Heat Plate Diffusion System of the Smart Junction Box on a Solar PV Panel

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.512-515.30 ◽

2012 ◽

Vol 512-515 ◽

pp. 30-34

Author(s):

Li Wen Po ◽

King Leung Wong ◽

Wen Lih Chen

Keyword(s):

Heat Pipe ◽

Electric Power ◽

Thermal Diffusion ◽

Diffusion System ◽

Photovoltaic Module ◽

Main Function ◽

Solar Photovoltaic ◽

Solar Pv ◽

Photovoltaic Panel ◽

Pv Panel

The main function of junction box on a solar photovoltaic module is to transmit the electricity from solar photovoltaic panel to the load. The invented smart junction box is designed for the following purposes: (1) to optimize efficiency through auto control, (2) to reduce the vicious effect of the cloud and dust on electricity output, and (3) to prevent the battery from overcharging. When actuated, the temperature of inner transistor is raised up to 158 °C because it consumes more solar electric power than a conventional junction box. Thus, a more effective thermal diffusion system is invented to cool down inner transistor to avoid failure. It is found that the presented heat plate diffusion system modified from heat pipe is capable of satisfying all required thermal diffusion conditions of the smart junction box.

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Passive Cooling Solutions for High Power Server CPUs with Pulsating Heat Pipe Technology: Review

Frontiers in Energy Research ◽

10.3389/fenrg.2021.755019 ◽

2021 ◽

Vol 9 ◽

Author(s):

Chenxi Li ◽

Ji Li

Keyword(s):

Heat Pipe ◽

High Power ◽

Data Centers ◽

Heat Dissipation ◽

Waste Heat ◽

Smart Cities ◽

Heat Pipes ◽

Passive Cooling ◽

Pulsating Heat Pipe ◽

Compact Structure

Data centers are becoming more powerful and more integrated with the continuous development of smart cities, which brings us more technological convenience, but also generates a large amount of waste heat. At present, the efficient and green cooling scheme is one of the key researches and development points to ensure the stable and safe operation of power electronic devices and achieve energy saving and consumption reduction. As a branch of the heat pipe, the pulsating heat pipe is one of most promising passive cooling techniques among many candidates for its unique advantages such as small size, simple and compact structure, and high heat dissipation efficiency, but its application in data centers just begins, and there are few reports on research and implementation. Based on the introduction of the basic structure, working mechanism and outstanding advantages of pulsating heat pipes, this paper reviews in detail the researches on the factors affecting its performance, so as to evaluate the possibility of using pulsating heat pipes in data centers. Finally, the latest application and development of pulsating heat pipes applied to heat dissipation of high-power CPUs are summarized, which can provide a guidance for subsequent research and engineering application.

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