The evaluation of energetic and exergetic performances of solar air heater using transverse wire rib roughness with various gaps - an experimental study
Abstract This paper presents an experimental investigation into the performance of solar air heaters using transverse wire ribs with various gap configurations (Ng = 1, 2, 3, 4, and smooth). The study was conducted under diverse outdoor meteorological conditions in Jagdalpur, India. The key paramete...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2025-06-01
|
| Series: | Journal of Engineering and Applied Science |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s44147-025-00632-w |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849686281200599040 |
|---|---|
| author | Dilbag Singh Mondloe Harish Kumar Ghritlahre Gajendra Kumar Agrawal |
| author_facet | Dilbag Singh Mondloe Harish Kumar Ghritlahre Gajendra Kumar Agrawal |
| author_sort | Dilbag Singh Mondloe |
| collection | DOAJ |
| description | Abstract This paper presents an experimental investigation into the performance of solar air heaters using transverse wire ribs with various gap configurations (Ng = 1, 2, 3, 4, and smooth). The study was conducted under diverse outdoor meteorological conditions in Jagdalpur, India. The key parameters utilized were mass flow rates (ṁ = 0.01891–0.03937 kg/s), relative roughness height (e/D = 0.043), and relative roughness pitch (p/e = 10). The results demonstrate that energetic efficiency (ηI) increases with mass flow rate, reaching the maximum of 83.5% for Ng = 2 at ṁ = 0.03937 kg/s. The exergetic efficiency (ηII) was obtained to improve with higher solar irradiance, elevated temperatures, and lower relative humidity, reaching a maximum of 3.67% for Ng = 2 and ṁ = 0.02889 kg/s. Moreover, the highest instantaneous thermal efficiency improvement factor (TEIF) for Ng = 2 was 13.42 at ṁ = 0.01891 kg/s, with corresponding values of 12.91, 11.30, 12.01, and 9.78 at higher flow rates. The TEIF percentage range for Ng = 1, 2, 3, and 4 was 1.93–1.44%, 2.16–1.52%, 1.81–1.23%, and 1.76–1.14%, respectively, indicating the superior performance of Ng = 2. Based on these findings, the present design of solar air heaters can be effectively utilized for air drying processes, offering a sustainable and energy-efficient solution for various industrial and agricultural applications. |
| format | Article |
| id | doaj-art-b8b522efd7bf4d15b53cd7f6793a8524 |
| institution | DOAJ |
| issn | 1110-1903 2536-9512 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of Engineering and Applied Science |
| spelling | doaj-art-b8b522efd7bf4d15b53cd7f6793a85242025-08-20T03:22:45ZengSpringerOpenJournal of Engineering and Applied Science1110-19032536-95122025-06-0172112610.1186/s44147-025-00632-wThe evaluation of energetic and exergetic performances of solar air heater using transverse wire rib roughness with various gaps - an experimental studyDilbag Singh Mondloe0Harish Kumar Ghritlahre1Gajendra Kumar Agrawal2Department of Mechanical Engineering, Jhada Sirha Government Engineering CollegeDepartment of Energy and Environmental Engineering, Chhattisgarh Swami Vivekanand Technical UniversityDepartment of Mechanical Engineering, Government Engineering CollegeAbstract This paper presents an experimental investigation into the performance of solar air heaters using transverse wire ribs with various gap configurations (Ng = 1, 2, 3, 4, and smooth). The study was conducted under diverse outdoor meteorological conditions in Jagdalpur, India. The key parameters utilized were mass flow rates (ṁ = 0.01891–0.03937 kg/s), relative roughness height (e/D = 0.043), and relative roughness pitch (p/e = 10). The results demonstrate that energetic efficiency (ηI) increases with mass flow rate, reaching the maximum of 83.5% for Ng = 2 at ṁ = 0.03937 kg/s. The exergetic efficiency (ηII) was obtained to improve with higher solar irradiance, elevated temperatures, and lower relative humidity, reaching a maximum of 3.67% for Ng = 2 and ṁ = 0.02889 kg/s. Moreover, the highest instantaneous thermal efficiency improvement factor (TEIF) for Ng = 2 was 13.42 at ṁ = 0.01891 kg/s, with corresponding values of 12.91, 11.30, 12.01, and 9.78 at higher flow rates. The TEIF percentage range for Ng = 1, 2, 3, and 4 was 1.93–1.44%, 2.16–1.52%, 1.81–1.23%, and 1.76–1.14%, respectively, indicating the superior performance of Ng = 2. Based on these findings, the present design of solar air heaters can be effectively utilized for air drying processes, offering a sustainable and energy-efficient solution for various industrial and agricultural applications.https://doi.org/10.1186/s44147-025-00632-wEnergetic efficiencyExergetic efficiencySolar air heatersThermal efficiency improvement factorTransverse wire ribsGaps |
| spellingShingle | Dilbag Singh Mondloe Harish Kumar Ghritlahre Gajendra Kumar Agrawal The evaluation of energetic and exergetic performances of solar air heater using transverse wire rib roughness with various gaps - an experimental study Journal of Engineering and Applied Science Energetic efficiency Exergetic efficiency Solar air heaters Thermal efficiency improvement factor Transverse wire ribs Gaps |
| title | The evaluation of energetic and exergetic performances of solar air heater using transverse wire rib roughness with various gaps - an experimental study |
| title_full | The evaluation of energetic and exergetic performances of solar air heater using transverse wire rib roughness with various gaps - an experimental study |
| title_fullStr | The evaluation of energetic and exergetic performances of solar air heater using transverse wire rib roughness with various gaps - an experimental study |
| title_full_unstemmed | The evaluation of energetic and exergetic performances of solar air heater using transverse wire rib roughness with various gaps - an experimental study |
| title_short | The evaluation of energetic and exergetic performances of solar air heater using transverse wire rib roughness with various gaps - an experimental study |
| title_sort | evaluation of energetic and exergetic performances of solar air heater using transverse wire rib roughness with various gaps an experimental study |
| topic | Energetic efficiency Exergetic efficiency Solar air heaters Thermal efficiency improvement factor Transverse wire ribs Gaps |
| url | https://doi.org/10.1186/s44147-025-00632-w |
| work_keys_str_mv | AT dilbagsinghmondloe theevaluationofenergeticandexergeticperformancesofsolarairheaterusingtransversewireribroughnesswithvariousgapsanexperimentalstudy AT harishkumarghritlahre theevaluationofenergeticandexergeticperformancesofsolarairheaterusingtransversewireribroughnesswithvariousgapsanexperimentalstudy AT gajendrakumaragrawal theevaluationofenergeticandexergeticperformancesofsolarairheaterusingtransversewireribroughnesswithvariousgapsanexperimentalstudy AT dilbagsinghmondloe evaluationofenergeticandexergeticperformancesofsolarairheaterusingtransversewireribroughnesswithvariousgapsanexperimentalstudy AT harishkumarghritlahre evaluationofenergeticandexergeticperformancesofsolarairheaterusingtransversewireribroughnesswithvariousgapsanexperimentalstudy AT gajendrakumaragrawal evaluationofenergeticandexergeticperformancesofsolarairheaterusingtransversewireribroughnesswithvariousgapsanexperimentalstudy |