Thermal behavior of natural convection flow in an inclined solar air heater
The thermal behavior of hot air in a natural convection mode on a solar absorber-plate has not been, so far, modeled experimentally. The present work aimed to assess the performance of the inclined solar air heater [SAH] experimentally by investigating the temperature distribution field...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Universiti Malaysia Pahang Publishing
2020-12-01
|
| Series: | Journal of Mechanical Engineering and Sciences |
| Subjects: | |
| Online Access: | https://journal.ump.edu.my/jmes/article/view/4104 |
| _version_ | 1797698456884609024 |
|---|---|
| author | Mohammed A. Neama Ayad T. Mustafa |
| author_facet | Mohammed A. Neama Ayad T. Mustafa |
| author_sort | Mohammed A. Neama |
| collection | DOAJ |
| description | The thermal behavior of hot air in a natural convection mode on a solar absorber-plate has not been, so far, modeled experimentally. The present work aimed to assess the performance of the inclined solar air heater [SAH] experimentally by investigating the temperature distribution field in the natural convection flow. The solar plate collector is designed based on the aspect ratio of length to height, L / H, of 6 and 12. The measurements are carried out for the collector tilt angles of 30°, 45°, 60° and 75°. The present investigation demonstrates the temperature distribution of hot air floated in an inclined channel of the SAH. The investigation showed 2D thermal stratification increases when increasing the distance along the collector plate, which looks clear in the SAH with a height of 10 cm. The results of the study show that the thickness of the thermal layers increases with increasing the tilt angle from 30 ̊ to 75 ̊. The reason dates back to increasing the buoyancy force of the hot air overthe absorber. The results demonstrated that the air temperatures for the height of 0.1 m and 45 ̊ tilt angle are higher than that for the height of 0.2 m by 23%. |
| first_indexed | 2024-03-12T03:54:27Z |
| format | Article |
| id | doaj.art-1fed54f0402f470db929336729f9bafc |
| institution | Directory Open Access Journal |
| issn | 2289-4659 2231-8380 |
| language | English |
| last_indexed | 2024-03-12T03:54:27Z |
| publishDate | 2020-12-01 |
| publisher | Universiti Malaysia Pahang Publishing |
| record_format | Article |
| series | Journal of Mechanical Engineering and Sciences |
| spelling | doaj.art-1fed54f0402f470db929336729f9bafc2023-09-03T12:06:49ZengUniversiti Malaysia Pahang PublishingJournal of Mechanical Engineering and Sciences2289-46592231-83802020-12-011447569758810.15282/jmes.14.4.2020.22.059Thermal behavior of natural convection flow in an inclined solar air heaterMohammed A. Neama0Ayad T. Mustafa1Mechanical Engineering Department, College of Engineering, Al-Nahrain University, Jadiriya, Baghdad, IraqMechanical Engineering Department, College of Engineering, Al-Nahrain University, Jadiriya, Baghdad, IraqThe thermal behavior of hot air in a natural convection mode on a solar absorber-plate has not been, so far, modeled experimentally. The present work aimed to assess the performance of the inclined solar air heater [SAH] experimentally by investigating the temperature distribution field in the natural convection flow. The solar plate collector is designed based on the aspect ratio of length to height, L / H, of 6 and 12. The measurements are carried out for the collector tilt angles of 30°, 45°, 60° and 75°. The present investigation demonstrates the temperature distribution of hot air floated in an inclined channel of the SAH. The investigation showed 2D thermal stratification increases when increasing the distance along the collector plate, which looks clear in the SAH with a height of 10 cm. The results of the study show that the thickness of the thermal layers increases with increasing the tilt angle from 30 ̊ to 75 ̊. The reason dates back to increasing the buoyancy force of the hot air overthe absorber. The results demonstrated that the air temperatures for the height of 0.1 m and 45 ̊ tilt angle are higher than that for the height of 0.2 m by 23%.https://journal.ump.edu.my/jmes/article/view/4104solar air heaterthermal behaviortemperature stratificationsolar irradianceinclination anglecollector height |
| spellingShingle | Mohammed A. Neama Ayad T. Mustafa Thermal behavior of natural convection flow in an inclined solar air heater Journal of Mechanical Engineering and Sciences solar air heater thermal behavior temperature stratification solar irradiance inclination angle collector height |
| title | Thermal behavior of natural convection flow in an inclined solar air heater |
| title_full | Thermal behavior of natural convection flow in an inclined solar air heater |
| title_fullStr | Thermal behavior of natural convection flow in an inclined solar air heater |
| title_full_unstemmed | Thermal behavior of natural convection flow in an inclined solar air heater |
| title_short | Thermal behavior of natural convection flow in an inclined solar air heater |
| title_sort | thermal behavior of natural convection flow in an inclined solar air heater |
| topic | solar air heater thermal behavior temperature stratification solar irradiance inclination angle collector height |
| url | https://journal.ump.edu.my/jmes/article/view/4104 |
| work_keys_str_mv | AT mohammedaneama thermalbehaviorofnaturalconvectionflowinaninclinedsolarairheater AT ayadtmustafa thermalbehaviorofnaturalconvectionflowinaninclinedsolarairheater |