Preparing Side Charging of PCM Storage: Theoretical and Experimental Investigation

In Ethiopia, there is an abundant source of solar energy that is estimated to 5.3 kWh/m2/day. However, more than 90% of the society uses biomass as a main source of energy for cooking due to lack of technologies to convert this energy. Replacing these cooking activities by using renewable energy res...

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Main Authors:	Tesfay, A. H., Hagos, F. Y., Yohannes, K. G., Nydal, O. J.
Format:	Article
Language:	English
Published:	IOP Publishing 2015
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://umpir.ump.edu.my/id/eprint/6701/ http://umpir.ump.edu.my/id/eprint/6701/ http://umpir.ump.edu.my/id/eprint/6701/ http://umpir.ump.edu.my/id/eprint/6701/1/fkm-2015-fwti-Preparing%20side%20charging.pdf

id	ump-6701
recordtype	eprints
spelling	ump-67012018-04-26T06:13:57Z http://umpir.ump.edu.my/id/eprint/6701/ Preparing Side Charging of PCM Storage: Theoretical and Experimental Investigation Tesfay, A. H. Hagos, F. Y. Yohannes, K. G. Nydal, O. J. TJ Mechanical engineering and machinery In Ethiopia, there is an abundant source of solar energy that is estimated to 5.3 kWh/m2/day. However, more than 90% of the society uses biomass as a main source of energy for cooking due to lack of technologies to convert this energy. Replacing these cooking activities by using renewable energy resources decreases pollution and reduces deforestation significantly. Using the solar energy in day time has no problem. For night time however, the system needs some kind of back-up system to make the daytime solar energy available. This back-up should have high-density energy storage and constant working temperature to perform a specific application. Latent heat storage using phase change materials (PCM) is one way of storing thermal energy. In the current study, a latent heat storage that uses a PCM material is used to store the solar energy aimed at utilizing solar energy for cooking Injera, main staple bread in Ethiopia. The PCM is a mixture of 60% NaNO3 and 40% KNO3 that are known as solar salts. The storage has a welded parallel aluminum fins with a gap of 40 mm in between to enhance the thermal conductivity during the charging-discharging process of the storage. The fins are extruded outside of the storage container to enable a side charging technique for the PCM. A prototype was developed with a solar salt of 17.5 kg and is tested for charging-discharging. The numerical simulation done on ANSYS and experimental results show an agreement and the system registered a 41.6% efficiency. IOP Publishing 2015 Article PeerReviewed application/pdf en cc_by http://umpir.ump.edu.my/id/eprint/6701/1/fkm-2015-fwti-Preparing%20side%20charging.pdf Tesfay, A. H. and Hagos, F. Y. and Yohannes, K. G. and Nydal, O. J. (2015) Preparing Side Charging of PCM Storage: Theoretical and Experimental Investigation. IOP Conference Series: Materials Science and Engineering, 100 (012021). pp. 1-13. ISSN 1757-8981 (Print), 1757-899X (Online) http://iopscience.iop.org/1757-899X/100/1/012021 doi:10.1088/1757-899X/100/1/012021
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Tesfay, A. H. Hagos, F. Y. Yohannes, K. G. Nydal, O. J. Preparing Side Charging of PCM Storage: Theoretical and Experimental Investigation
description	In Ethiopia, there is an abundant source of solar energy that is estimated to 5.3 kWh/m2/day. However, more than 90% of the society uses biomass as a main source of energy for cooking due to lack of technologies to convert this energy. Replacing these cooking activities by using renewable energy resources decreases pollution and reduces deforestation significantly. Using the solar energy in day time has no problem. For night time however, the system needs some kind of back-up system to make the daytime solar energy available. This back-up should have high-density energy storage and constant working temperature to perform a specific application. Latent heat storage using phase change materials (PCM) is one way of storing thermal energy. In the current study, a latent heat storage that uses a PCM material is used to store the solar energy aimed at utilizing solar energy for cooking Injera, main staple bread in Ethiopia. The PCM is a mixture of 60% NaNO3 and 40% KNO3 that are known as solar salts. The storage has a welded parallel aluminum fins with a gap of 40 mm in between to enhance the thermal conductivity during the charging-discharging process of the storage. The fins are extruded outside of the storage container to enable a side charging technique for the PCM. A prototype was developed with a solar salt of 17.5 kg and is tested for charging-discharging. The numerical simulation done on ANSYS and experimental results show an agreement and the system registered a 41.6% efficiency.
format	Article
author	Tesfay, A. H. Hagos, F. Y. Yohannes, K. G. Nydal, O. J.
author_facet	Tesfay, A. H. Hagos, F. Y. Yohannes, K. G. Nydal, O. J.
author_sort	Tesfay, A. H.
title	Preparing Side Charging of PCM Storage: Theoretical and Experimental Investigation
title_short	Preparing Side Charging of PCM Storage: Theoretical and Experimental Investigation
title_full	Preparing Side Charging of PCM Storage: Theoretical and Experimental Investigation
title_fullStr	Preparing Side Charging of PCM Storage: Theoretical and Experimental Investigation
title_full_unstemmed	Preparing Side Charging of PCM Storage: Theoretical and Experimental Investigation
title_sort	preparing side charging of pcm storage: theoretical and experimental investigation
publisher	IOP Publishing
publishDate	2015
url	http://umpir.ump.edu.my/id/eprint/6701/ http://umpir.ump.edu.my/id/eprint/6701/ http://umpir.ump.edu.my/id/eprint/6701/ http://umpir.ump.edu.my/id/eprint/6701/1/fkm-2015-fwti-Preparing%20side%20charging.pdf
first_indexed	2023-09-18T22:02:41Z
last_indexed	2023-09-18T22:02:41Z
_version_	1777414503720288256

Preparing Side Charging of PCM Storage: Theoretical and Experimental Investigation

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