Solidification Enhancement in a Multi-Tube Latent Heat Storage System for Efficient and Economical Production: Effect of Number, Position and Temperature of the Tubes
Thermal energy storage is an important component in energy units to decrease the gap between energy supply and demand. Free convection and the locations of the tubes carrying the heat-transfer fluid (HTF) have a significant influence on both the energy discharging potential and the buoyancy effect d...
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| Format: | Article |
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MDPI AG
2021-11-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/12/3211 |
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| author | Min Li Jasim M. Mahdi Hayder I. Mohammed Dmitry Olegovich Bokov Mustafa Z. Mahmoud Ali Naghizadeh Pouyan Talebizadehsardari Wahiba Yaïci |
| author_facet | Min Li Jasim M. Mahdi Hayder I. Mohammed Dmitry Olegovich Bokov Mustafa Z. Mahmoud Ali Naghizadeh Pouyan Talebizadehsardari Wahiba Yaïci |
| author_sort | Min Li |
| collection | DOAJ |
| description | Thermal energy storage is an important component in energy units to decrease the gap between energy supply and demand. Free convection and the locations of the tubes carrying the heat-transfer fluid (HTF) have a significant influence on both the energy discharging potential and the buoyancy effect during the solidification mode. In the present study, the impact of the tube position was examined during the discharging process. Liquid-fraction evolution and energy removal rate with thermo-fluid contour profiles were used to examine the performance of the unit. Heat exchanger tubes are proposed with different numbers and positions in the unit for various cases including uniform and non-uniform tubes distribution. The results show that moving the HTF tubes to medium positions along the vertical direction is relatively better for enhancing the solidification of PCM with multiple HTF tubes. Repositioning of the HTF tubes on the left side of the unit can slightly improve the heat removal rate by about 0.2 in the case of p5-u-1 and decreases by 1.6% in the case of p5-u-2. It was found also that increasing the distance between the tubes in the vertical direction has a detrimental effect on the PCM solidification mode. Replacing the HTF tubes on the left side of the unit negatively reduces the heat removal rate by about 1.2 and 4.4%, respectively. Further, decreasing the HTF temperature from 15 °C to 10 and 5 °C can increase the heat removal rate by around 7 and 16%, respectively. This paper indicates that the specific concern to the HTF tube arrangement should be made to improve the discharging process attending free convection impact in phase change heat storage. |
| first_indexed | 2024-03-10T03:26:59Z |
| format | Article |
| id | doaj.art-10bd28cc9f48490c83b08a802dc0230f |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T03:26:59Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-10bd28cc9f48490c83b08a802dc0230f2023-11-23T09:49:25ZengMDPI AGNanomaterials2079-49912021-11-011112321110.3390/nano11123211Solidification Enhancement in a Multi-Tube Latent Heat Storage System for Efficient and Economical Production: Effect of Number, Position and Temperature of the TubesMin Li0Jasim M. Mahdi1Hayder I. Mohammed2Dmitry Olegovich Bokov3Mustafa Z. Mahmoud4Ali Naghizadeh5Pouyan Talebizadehsardari6Wahiba Yaïci7Digital Economy Academy, Yango University, Fuzhou 350015, ChinaDepartment of Energy Engineering, University of Baghdad, Baghdad 10071, IraqDepartment of Physics, College of Education, University of Garmian, Kurdistan, Kalar 46021, IraqInstitute of Pharmacy, Sechenov First Moscow State Medical University, 8 Trubetskaya St., Bldg. 2, 119991 Moscow, RussiaRadiology and Medical Imaging Department, College of Applied Medical Sciences, Prince Sattam bin Abdulaziz University, Al-Kharj 16244, Saudi ArabiaFaculty of Mechanical Engineering, Babol University of Technology, Babol 4714873113, IranCentre for Sustainable Energy Use in Food Chains, Institute of Energy Futures, Brunel University London, Uxbridge UB8 3PH, UKCanmet ENERGY Research Centre, Natural Resources Canada, 1 Haanel Drive, Ottawa, ON K1A 1M1, CanadaThermal energy storage is an important component in energy units to decrease the gap between energy supply and demand. Free convection and the locations of the tubes carrying the heat-transfer fluid (HTF) have a significant influence on both the energy discharging potential and the buoyancy effect during the solidification mode. In the present study, the impact of the tube position was examined during the discharging process. Liquid-fraction evolution and energy removal rate with thermo-fluid contour profiles were used to examine the performance of the unit. Heat exchanger tubes are proposed with different numbers and positions in the unit for various cases including uniform and non-uniform tubes distribution. The results show that moving the HTF tubes to medium positions along the vertical direction is relatively better for enhancing the solidification of PCM with multiple HTF tubes. Repositioning of the HTF tubes on the left side of the unit can slightly improve the heat removal rate by about 0.2 in the case of p5-u-1 and decreases by 1.6% in the case of p5-u-2. It was found also that increasing the distance between the tubes in the vertical direction has a detrimental effect on the PCM solidification mode. Replacing the HTF tubes on the left side of the unit negatively reduces the heat removal rate by about 1.2 and 4.4%, respectively. Further, decreasing the HTF temperature from 15 °C to 10 and 5 °C can increase the heat removal rate by around 7 and 16%, respectively. This paper indicates that the specific concern to the HTF tube arrangement should be made to improve the discharging process attending free convection impact in phase change heat storage.https://www.mdpi.com/2079-4991/11/12/3211natural convectionphase change materialtubes’ arrangementthermal energy storagesolidificationmulti-tubes heat exchanger |
| spellingShingle | Min Li Jasim M. Mahdi Hayder I. Mohammed Dmitry Olegovich Bokov Mustafa Z. Mahmoud Ali Naghizadeh Pouyan Talebizadehsardari Wahiba Yaïci Solidification Enhancement in a Multi-Tube Latent Heat Storage System for Efficient and Economical Production: Effect of Number, Position and Temperature of the Tubes Nanomaterials natural convection phase change material tubes’ arrangement thermal energy storage solidification multi-tubes heat exchanger |
| title | Solidification Enhancement in a Multi-Tube Latent Heat Storage System for Efficient and Economical Production: Effect of Number, Position and Temperature of the Tubes |
| title_full | Solidification Enhancement in a Multi-Tube Latent Heat Storage System for Efficient and Economical Production: Effect of Number, Position and Temperature of the Tubes |
| title_fullStr | Solidification Enhancement in a Multi-Tube Latent Heat Storage System for Efficient and Economical Production: Effect of Number, Position and Temperature of the Tubes |
| title_full_unstemmed | Solidification Enhancement in a Multi-Tube Latent Heat Storage System for Efficient and Economical Production: Effect of Number, Position and Temperature of the Tubes |
| title_short | Solidification Enhancement in a Multi-Tube Latent Heat Storage System for Efficient and Economical Production: Effect of Number, Position and Temperature of the Tubes |
| title_sort | solidification enhancement in a multi tube latent heat storage system for efficient and economical production effect of number position and temperature of the tubes |
| topic | natural convection phase change material tubes’ arrangement thermal energy storage solidification multi-tubes heat exchanger |
| url | https://www.mdpi.com/2079-4991/11/12/3211 |
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