Experimental Study on the Effect of Using Metallic Brushes on the Charging and Discharging Time of Thermal Energy Storage Unit
Phase change materials are known to be good in use in latent heat thermal energy storage (LHTES) systems, but one of their drawbacks is the slow melting and solidification processes. So that, in this work, enhancing heat transfer of phase change material is studied experimentally for in charging and...
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| Format: | Article |
| Language: | English |
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University of Baghdad
2015-09-01
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| Series: | Journal of Engineering |
| Subjects: | |
| Online Access: | http://joe.uobaghdad.edu.iq/index.php/main/article/view/346 |
| _version_ | 1797715090508611584 |
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| author | Rafa Abbas Hassan, Ass. Prof. Dr. Aseel Khaleel Shyaa, Dr Ban Mohammed Hasan Kadim |
| author_facet | Rafa Abbas Hassan, Ass. Prof. Dr. Aseel Khaleel Shyaa, Dr Ban Mohammed Hasan Kadim |
| author_sort | Rafa Abbas Hassan, Ass. Prof. Dr. |
| collection | DOAJ |
| description | Phase change materials are known to be good in use in latent heat thermal energy storage (LHTES) systems, but one of their drawbacks is the slow melting and solidification processes. So that, in this work, enhancing heat transfer of phase change material is studied experimentally for in charging and discharging processes by the addition of high thermal conductive material such as copper in the form of brushes, which were added in both PCM and air sides. The additions of brushes have been carried out with different void fractions (97%, 94% and 90%) and the effect of four different air velocities was tested. The results indicate that the minimum brush void fraction gave the maximum heat transfer in PCM and reduced the time for melting for (ϵ=90%) up to 4.49 times as compare with the case of no brush. It can be seen that the addition of brushes in air side helped to reduce the solidification time and increase the convection heat transfer coefficient as the brush void fraction decreased. Also the minimum velocity (v = 1 m/s) gave maximum outlet temperature. |
| first_indexed | 2024-03-12T08:01:42Z |
| format | Article |
| id | doaj.art-2e28eb91416845bd8a38320f5f7fbd99 |
| institution | Directory Open Access Journal |
| issn | 1726-4073 2520-3339 |
| language | English |
| last_indexed | 2024-03-12T08:01:42Z |
| publishDate | 2015-09-01 |
| publisher | University of Baghdad |
| record_format | Article |
| series | Journal of Engineering |
| spelling | doaj.art-2e28eb91416845bd8a38320f5f7fbd992023-09-02T19:50:34ZengUniversity of BaghdadJournal of Engineering1726-40732520-33392015-09-01219Experimental Study on the Effect of Using Metallic Brushes on the Charging and Discharging Time of Thermal Energy Storage UnitRafa Abbas Hassan, Ass. Prof. Dr.0Aseel Khaleel Shyaa, Dr1Ban Mohammed Hasan Kadim2college of Engineering - Al-Mustansiriyah Universitycollege of Engineering - Al-Mustansiriyah Universitycollege of Engineering - Al-Mustansiriyah UniversityPhase change materials are known to be good in use in latent heat thermal energy storage (LHTES) systems, but one of their drawbacks is the slow melting and solidification processes. So that, in this work, enhancing heat transfer of phase change material is studied experimentally for in charging and discharging processes by the addition of high thermal conductive material such as copper in the form of brushes, which were added in both PCM and air sides. The additions of brushes have been carried out with different void fractions (97%, 94% and 90%) and the effect of four different air velocities was tested. The results indicate that the minimum brush void fraction gave the maximum heat transfer in PCM and reduced the time for melting for (ϵ=90%) up to 4.49 times as compare with the case of no brush. It can be seen that the addition of brushes in air side helped to reduce the solidification time and increase the convection heat transfer coefficient as the brush void fraction decreased. Also the minimum velocity (v = 1 m/s) gave maximum outlet temperature.http://joe.uobaghdad.edu.iq/index.php/main/article/view/346Thermal storage, Phase change materials, Latent heat thermal energy storage and heat transfer enhancement. |
| spellingShingle | Rafa Abbas Hassan, Ass. Prof. Dr. Aseel Khaleel Shyaa, Dr Ban Mohammed Hasan Kadim Experimental Study on the Effect of Using Metallic Brushes on the Charging and Discharging Time of Thermal Energy Storage Unit Journal of Engineering Thermal storage, Phase change materials, Latent heat thermal energy storage and heat transfer enhancement. |
| title | Experimental Study on the Effect of Using Metallic Brushes on the Charging and Discharging Time of Thermal Energy Storage Unit |
| title_full | Experimental Study on the Effect of Using Metallic Brushes on the Charging and Discharging Time of Thermal Energy Storage Unit |
| title_fullStr | Experimental Study on the Effect of Using Metallic Brushes on the Charging and Discharging Time of Thermal Energy Storage Unit |
| title_full_unstemmed | Experimental Study on the Effect of Using Metallic Brushes on the Charging and Discharging Time of Thermal Energy Storage Unit |
| title_short | Experimental Study on the Effect of Using Metallic Brushes on the Charging and Discharging Time of Thermal Energy Storage Unit |
| title_sort | experimental study on the effect of using metallic brushes on the charging and discharging time of thermal energy storage unit |
| topic | Thermal storage, Phase change materials, Latent heat thermal energy storage and heat transfer enhancement. |
| url | http://joe.uobaghdad.edu.iq/index.php/main/article/view/346 |
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