Experimental Study of Forced- Convection from Horizontal Rectangular Fins Array into Air Duct
In this work, an experimental study has been done to expect the heat characteristics and performance of the forced-convection from a heated horizontal rectangular fins array to air inside a rectangular cross-section duct. Three several configurations of rectangular fins array have been employed...
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Al-Khwarizmi College of Engineering – University of Baghdad
2019
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oai:doaj.org-article:12ef9369ca4e411488eba6bc3637c13b2021-12-02T03:50:43ZExperimental Study of Forced- Convection from Horizontal Rectangular Fins Array into Air Duct10.22153/kej.2019.07.0011818-11712312-0789https://doaj.org/article/12ef9369ca4e411488eba6bc3637c13b2019-03-01T00:00:00Zhttp://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/416https://doaj.org/toc/1818-1171https://doaj.org/toc/2312-0789 In this work, an experimental study has been done to expect the heat characteristics and performance of the forced-convection from a heated horizontal rectangular fins array to air inside a rectangular cross-section duct. Three several configurations of rectangular fins array have been employed. One configuration without notches and perforations (solid) and two configurations with combination of rectangular-notches and circular-perforations for two various area removal percentages from fins namely 18% notches-9% perforations and 9% notches-18% perforations are utilized. The rectangular fins dimensions and fins number are kept constant. The fins array is heated electrically from the base plate with five different magnitudes of power-inputs. Five several air flow velocity into a duct are utilized. The influence of fin geometry, air flow velocity, Reynolds number and the surface heat flux on the heat-performance of forced heat convection have been simulated and studied experimentally. The experimental data indicates that the combination of 18% rectangular-notched and 9% circular-perforated rectangular fins array gave best forced heat performance in terms of average heat transfer coefficient about (25% - 45%) and (7% - 20%) compared than solid and 9% notches with18% perforations fins array respectively. Five empirical correlations to predict the average Nusselt number for the 18% notches with 9% perforations rectangular fins array at wide range of surface heat flux are deduced. The present data are compared with previous works and a good closeness in behavior is noticed. Saad Najeeb ShehabAl-Khwarizmi College of Engineering – University of BaghdadarticleFins array, circular-perforations, rectangular-notches, forced-convection, experimental study.Chemical engineeringTP155-156Engineering (General). Civil engineering (General)TA1-2040ENAl-Khawarizmi Engineering Journal, Vol 15, Iss 1 (2019) |
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DOAJ |
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DOAJ |
| language |
EN |
| topic |
Fins array, circular-perforations, rectangular-notches, forced-convection, experimental study. Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040 |
| spellingShingle |
Fins array, circular-perforations, rectangular-notches, forced-convection, experimental study. Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040 Saad Najeeb Shehab Experimental Study of Forced- Convection from Horizontal Rectangular Fins Array into Air Duct |
| description |
In this work, an experimental study has been done to expect the heat characteristics and performance of the forced-convection from a heated horizontal rectangular fins array to air inside a rectangular cross-section duct. Three several configurations of rectangular fins array have been employed. One configuration without notches and perforations (solid) and two configurations with combination of rectangular-notches and circular-perforations for two various area removal percentages from fins namely 18% notches-9% perforations and 9% notches-18% perforations are utilized. The rectangular fins dimensions and fins number are kept constant. The fins array is heated electrically from the base plate with five different magnitudes of power-inputs. Five several air flow velocity into a duct are utilized. The influence of fin geometry, air flow velocity, Reynolds number and the surface heat flux on the heat-performance of forced heat convection have been simulated and studied experimentally. The experimental data indicates that the combination of 18% rectangular-notched and 9% circular-perforated rectangular fins array gave best forced heat performance in terms of average heat transfer coefficient about (25% - 45%) and (7% - 20%) compared than solid and 9% notches with18% perforations fins array respectively. Five empirical correlations to predict the average Nusselt number for the 18% notches with 9% perforations rectangular fins array at wide range of surface heat flux are deduced. The present data are compared with previous works and a good closeness in behavior is noticed.
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| format |
article |
| author |
Saad Najeeb Shehab |
| author_facet |
Saad Najeeb Shehab |
| author_sort |
Saad Najeeb Shehab |
| title |
Experimental Study of Forced- Convection from Horizontal Rectangular Fins Array into Air Duct |
| title_short |
Experimental Study of Forced- Convection from Horizontal Rectangular Fins Array into Air Duct |
| title_full |
Experimental Study of Forced- Convection from Horizontal Rectangular Fins Array into Air Duct |
| title_fullStr |
Experimental Study of Forced- Convection from Horizontal Rectangular Fins Array into Air Duct |
| title_full_unstemmed |
Experimental Study of Forced- Convection from Horizontal Rectangular Fins Array into Air Duct |
| title_sort |
experimental study of forced- convection from horizontal rectangular fins array into air duct |
| publisher |
Al-Khwarizmi College of Engineering – University of Baghdad |
| publishDate |
2019 |
| url |
https://doaj.org/article/12ef9369ca4e411488eba6bc3637c13b |
| work_keys_str_mv |
AT saadnajeebshehab experimentalstudyofforcedconvectionfromhorizontalrectangularfinsarrayintoairduct |
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1718401592102748160 |