INVESTIGATION OF A MIXED-CONVECTIVE HEAT TREATMENT OF SINGLEAIR AIR COOLED EXCHANGERS IN VARIOUS CROSS-STEPS PIPE INSTALLATION
The article presents a study of single-row air-cooled heat exchangers consisting of bimetallic rolling aluminum finned tubes with different transverse steps of their installation, equipped with an additional intensifying device - a suction shaft, of various heights. The methodology of processing the...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Kazan State Power Engineering University
2018-04-01
|
| Series: | Известия высших учебных заведений: Проблемы энергетики |
| Subjects: | |
| Online Access: | https://www.energyret.ru/jour/article/view/462 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850157730843590656 |
|---|---|
| author | A. B. Sukhotskii G. S. Sidorik |
| author_facet | A. B. Sukhotskii G. S. Sidorik |
| author_sort | A. B. Sukhotskii |
| collection | DOAJ |
| description | The article presents a study of single-row air-cooled heat exchangers consisting of bimetallic rolling aluminum finned tubes with different transverse steps of their installation, equipped with an additional intensifying device - a suction shaft, of various heights. The methodology of processing the obtained experimental data is analyzed and the Nusselt numbers reliance on Grashof numbers are presented. The physical picture of the air flow structure passing through a single-row horizontal finned beam is analyzed. Because of the analysis, it was concluded that the installation of the exhaust shaft above the beam leads to a significant increase in heat transfer by a factor of 2.5-3.0, but the efficiency of heat transfer depends on the height of the extraction shaft and on the back spacing. In such case the mixed convective heat transfer reliance on back spacing is differed from a character of dependence as compared to free convection heat exchange. |
| format | Article |
| id | doaj-art-545bb7bd033446da9852835e42854bcd |
| institution | OA Journals |
| issn | 1998-9903 |
| language | English |
| publishDate | 2018-04-01 |
| publisher | Kazan State Power Engineering University |
| record_format | Article |
| series | Известия высших учебных заведений: Проблемы энергетики |
| spelling | doaj-art-545bb7bd033446da9852835e42854bcd2025-08-20T02:24:04ZengKazan State Power Engineering UniversityИзвестия высших учебных заведений: Проблемы энергетики1998-99032018-04-011911-1231110.30724/1998-9903-2017-19-11-12-3-11454INVESTIGATION OF A MIXED-CONVECTIVE HEAT TREATMENT OF SINGLEAIR AIR COOLED EXCHANGERS IN VARIOUS CROSS-STEPS PIPE INSTALLATIONA. B. Sukhotskii0G. S. Sidorik1Belarussian state technological university, MinskBelarussian state technological university, MinskThe article presents a study of single-row air-cooled heat exchangers consisting of bimetallic rolling aluminum finned tubes with different transverse steps of their installation, equipped with an additional intensifying device - a suction shaft, of various heights. The methodology of processing the obtained experimental data is analyzed and the Nusselt numbers reliance on Grashof numbers are presented. The physical picture of the air flow structure passing through a single-row horizontal finned beam is analyzed. Because of the analysis, it was concluded that the installation of the exhaust shaft above the beam leads to a significant increase in heat transfer by a factor of 2.5-3.0, but the efficiency of heat transfer depends on the height of the extraction shaft and on the back spacing. In such case the mixed convective heat transfer reliance on back spacing is differed from a character of dependence as compared to free convection heat exchange.https://www.energyret.ru/jour/article/view/462air-cooled heat exchangerfree convectionbimetallic finned tubeexhaust shaftgrashof numbernusselt numberlift-and-exhaust differential pressureheat transfer coefficient |
| spellingShingle | A. B. Sukhotskii G. S. Sidorik INVESTIGATION OF A MIXED-CONVECTIVE HEAT TREATMENT OF SINGLEAIR AIR COOLED EXCHANGERS IN VARIOUS CROSS-STEPS PIPE INSTALLATION Известия высших учебных заведений: Проблемы энергетики air-cooled heat exchanger free convection bimetallic finned tube exhaust shaft grashof number nusselt number lift-and-exhaust differential pressure heat transfer coefficient |
| title | INVESTIGATION OF A MIXED-CONVECTIVE HEAT TREATMENT OF SINGLEAIR AIR COOLED EXCHANGERS IN VARIOUS CROSS-STEPS PIPE INSTALLATION |
| title_full | INVESTIGATION OF A MIXED-CONVECTIVE HEAT TREATMENT OF SINGLEAIR AIR COOLED EXCHANGERS IN VARIOUS CROSS-STEPS PIPE INSTALLATION |
| title_fullStr | INVESTIGATION OF A MIXED-CONVECTIVE HEAT TREATMENT OF SINGLEAIR AIR COOLED EXCHANGERS IN VARIOUS CROSS-STEPS PIPE INSTALLATION |
| title_full_unstemmed | INVESTIGATION OF A MIXED-CONVECTIVE HEAT TREATMENT OF SINGLEAIR AIR COOLED EXCHANGERS IN VARIOUS CROSS-STEPS PIPE INSTALLATION |
| title_short | INVESTIGATION OF A MIXED-CONVECTIVE HEAT TREATMENT OF SINGLEAIR AIR COOLED EXCHANGERS IN VARIOUS CROSS-STEPS PIPE INSTALLATION |
| title_sort | investigation of a mixed convective heat treatment of singleair air cooled exchangers in various cross steps pipe installation |
| topic | air-cooled heat exchanger free convection bimetallic finned tube exhaust shaft grashof number nusselt number lift-and-exhaust differential pressure heat transfer coefficient |
| url | https://www.energyret.ru/jour/article/view/462 |
| work_keys_str_mv | AT absukhotskii investigationofamixedconvectiveheattreatmentofsingleairaircooledexchangersinvariouscrossstepspipeinstallation AT gssidorik investigationofamixedconvectiveheattreatmentofsingleairaircooledexchangersinvariouscrossstepspipeinstallation |