Applying the concepts of efficiency and effectiveness to analyze the influence of the number of passes in the shell and tubes condenser thermal performance
The work analyzes the influence of the number of passes in a shell and tubes condenser heat exchanger, with an inlet pressure of R134a refrigerant in the shell equal to 1.2 MPa. The fluid that circulates in the tubes is water or water-based nanofluid with a fraction of aluminum oxide nanoparticles (...
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Sumy State University
2021
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oai:doaj.org-article:2e79cc3c641240419c03f31db220f8452021-11-06T11:50:08ZApplying the concepts of efficiency and effectiveness to analyze the influence of the number of passes in the shell and tubes condenser thermal performance10.21272/jes.2021.8(1).f12312-24982414-9381https://doaj.org/article/2e79cc3c641240419c03f31db220f8452021-06-01T00:00:00Zhttp://jes.sumdu.edu.ua/wp-content/uploads/2021/07/jes_8_1_2021_F1-F10.pdfhttps://doaj.org/toc/2312-2498https://doaj.org/toc/2414-9381The work analyzes the influence of the number of passes in a shell and tubes condenser heat exchanger, with an inlet pressure of R134a refrigerant in the shell equal to 1.2 MPa. The fluid that circulates in the tubes is water or water-based nanofluid with a fraction of aluminum oxide nanoparticles (Al2O3), and the methodology used subdivides the heat exchanger into three distinct regions: the overheated region, the saturated region, and the subcooled region. The main parameters used to analyze the thermal performance of the heat exchanger were efficiency and effectiveness. Efficiency in the superheated steam region is close to 1.0. There is scope for increasing thermal effectiveness, which can be improved with more significant passes in the tube. The saturated steam region process is efficient for lower mass flow rates of the fluid in the tube, but it is ineffective. However, it is highly effective for high mass flow rates. There is ample scope for increasing effectiveness in the subcooled region. Still, the fluid inlet temperature in the pipe and the work refrigerant pressure are the limiting factors for greater heat exchange in the subcooled region.Nogueira E.Sumy State Universityarticleheat exchangerefrigeranttube condenserthermal performanceEngineering (General). Civil engineering (General)TA1-2040ENRUUKЖурнал інженерних наук, Vol 8, Iss 1, Pp F1-F10 (2021) |
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DOAJ |
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DOAJ |
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EN RU UK |
| topic |
heat exchange refrigerant tube condenser thermal performance Engineering (General). Civil engineering (General) TA1-2040 |
| spellingShingle |
heat exchange refrigerant tube condenser thermal performance Engineering (General). Civil engineering (General) TA1-2040 Nogueira E. Applying the concepts of efficiency and effectiveness to analyze the influence of the number of passes in the shell and tubes condenser thermal performance |
| description |
The work analyzes the influence of the number of passes in a shell and tubes condenser heat exchanger, with an inlet pressure of R134a refrigerant in the shell equal to 1.2 MPa. The fluid that circulates in the tubes is water or water-based nanofluid with a fraction of aluminum oxide nanoparticles (Al2O3), and the methodology used subdivides the heat exchanger into three distinct regions: the overheated region, the saturated region, and the subcooled region. The main parameters used to analyze the thermal performance of the heat exchanger were efficiency and effectiveness. Efficiency in the superheated steam region is close to 1.0. There is scope for increasing thermal effectiveness, which can be improved with more significant passes in the tube. The saturated steam region process is efficient for lower mass flow rates of the fluid in the tube, but it is ineffective. However, it is highly effective for high mass flow rates. There is ample scope for increasing effectiveness in the subcooled region. Still, the fluid inlet temperature in the pipe and the work refrigerant pressure are the limiting factors for greater heat exchange in the subcooled region. |
| format |
article |
| author |
Nogueira E. |
| author_facet |
Nogueira E. |
| author_sort |
Nogueira E. |
| title |
Applying the concepts of efficiency and effectiveness to analyze the influence of the number of passes in the shell and tubes condenser thermal performance |
| title_short |
Applying the concepts of efficiency and effectiveness to analyze the influence of the number of passes in the shell and tubes condenser thermal performance |
| title_full |
Applying the concepts of efficiency and effectiveness to analyze the influence of the number of passes in the shell and tubes condenser thermal performance |
| title_fullStr |
Applying the concepts of efficiency and effectiveness to analyze the influence of the number of passes in the shell and tubes condenser thermal performance |
| title_full_unstemmed |
Applying the concepts of efficiency and effectiveness to analyze the influence of the number of passes in the shell and tubes condenser thermal performance |
| title_sort |
applying the concepts of efficiency and effectiveness to analyze the influence of the number of passes in the shell and tubes condenser thermal performance |
| publisher |
Sumy State University |
| publishDate |
2021 |
| url |
https://doaj.org/article/2e79cc3c641240419c03f31db220f845 |
| work_keys_str_mv |
AT nogueirae applyingtheconceptsofefficiencyandeffectivenesstoanalyzetheinfluenceofthenumberofpassesintheshellandtubescondenserthermalperformance |
| _version_ |
1718443658209918976 |