NEW NUMBER NUSSELT CORRELATION FOR THE ANNULAR SPACE OF THE TUBE IN TUBE HEAT EXCHANGER
The use of Nusselt number correlation in the annular space of a tube-in-tube heat exchanger is a difficult task for researchers, since this correlation is deduced specifically for certain geometrical features. As such, researchers would usually only present limited areas of applicability. This paper...
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| Format: | Article |
| Language: | English |
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Petroleum-Gas University of Ploiesti
2024-11-01
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| Series: | Romanian Journal of Petroleum & Gas Technology |
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| Online Access: | http://jpgt.upg-ploiesti.ro/wp-content/uploads/2024/11/16_RJPGT_no.2-2024-Number-Nusselt-correlation-annular-space-tube-heat-exchanger_rev1.pdf |
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| author | Maria Popa |
| author_facet | Maria Popa |
| author_sort | Maria Popa |
| collection | DOAJ |
| description | The use of Nusselt number correlation in the annular space of a tube-in-tube heat exchanger is a difficult task for researchers, since this correlation is deduced specifically for certain geometrical features. As such, researchers would usually only present limited areas of applicability. This paper presents the algorithm for establishing a new Nusselt number correlation for the annular space of a tube-in-tube heat exchanger with warm water flowing inside in counterflow with cold water in the annular space. The objective of the research was to establish the Nusselt number that allows the calculation of the partial convective heat transfer coefficient on the cold fluid side for a laminar flow regime. This correlation must be of the form: Nu = C·Rem·Prn. This was possible by processing the experimental data by applying the least squares method, as an optimization method. Five sets of experimental data were used for this study. A steel tube in tube heat exchanger was used for this work. |
| format | Article |
| id | doaj-art-b47cea5fab804ab5830f87454dd33d20 |
| institution | Kabale University |
| issn | 2734-5319 2972-0370 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Petroleum-Gas University of Ploiesti |
| record_format | Article |
| series | Romanian Journal of Petroleum & Gas Technology |
| spelling | doaj-art-b47cea5fab804ab5830f87454dd33d202025-02-01T20:14:25ZengPetroleum-Gas University of PloiestiRomanian Journal of Petroleum & Gas Technology2734-53192972-03702024-11-015221722610.51865/JPGT.2024.02.16NEW NUMBER NUSSELT CORRELATION FOR THE ANNULAR SPACE OF THE TUBE IN TUBE HEAT EXCHANGERMaria Popa0https://orcid.org/0000-0002-4491-6606Petroleum-Gas University of Ploiesti, RomaniaThe use of Nusselt number correlation in the annular space of a tube-in-tube heat exchanger is a difficult task for researchers, since this correlation is deduced specifically for certain geometrical features. As such, researchers would usually only present limited areas of applicability. This paper presents the algorithm for establishing a new Nusselt number correlation for the annular space of a tube-in-tube heat exchanger with warm water flowing inside in counterflow with cold water in the annular space. The objective of the research was to establish the Nusselt number that allows the calculation of the partial convective heat transfer coefficient on the cold fluid side for a laminar flow regime. This correlation must be of the form: Nu = C·Rem·Prn. This was possible by processing the experimental data by applying the least squares method, as an optimization method. Five sets of experimental data were used for this study. A steel tube in tube heat exchanger was used for this work.http://jpgt.upg-ploiesti.ro/wp-content/uploads/2024/11/16_RJPGT_no.2-2024-Number-Nusselt-correlation-annular-space-tube-heat-exchanger_rev1.pdfheat exchangerlaminar flow regimepartial heat transfer coefficientnusselt number |
| spellingShingle | Maria Popa NEW NUMBER NUSSELT CORRELATION FOR THE ANNULAR SPACE OF THE TUBE IN TUBE HEAT EXCHANGER Romanian Journal of Petroleum & Gas Technology heat exchanger laminar flow regime partial heat transfer coefficient nusselt number |
| title | NEW NUMBER NUSSELT CORRELATION FOR THE ANNULAR SPACE OF THE TUBE IN TUBE HEAT EXCHANGER |
| title_full | NEW NUMBER NUSSELT CORRELATION FOR THE ANNULAR SPACE OF THE TUBE IN TUBE HEAT EXCHANGER |
| title_fullStr | NEW NUMBER NUSSELT CORRELATION FOR THE ANNULAR SPACE OF THE TUBE IN TUBE HEAT EXCHANGER |
| title_full_unstemmed | NEW NUMBER NUSSELT CORRELATION FOR THE ANNULAR SPACE OF THE TUBE IN TUBE HEAT EXCHANGER |
| title_short | NEW NUMBER NUSSELT CORRELATION FOR THE ANNULAR SPACE OF THE TUBE IN TUBE HEAT EXCHANGER |
| title_sort | new number nusselt correlation for the annular space of the tube in tube heat exchanger |
| topic | heat exchanger laminar flow regime partial heat transfer coefficient nusselt number |
| url | http://jpgt.upg-ploiesti.ro/wp-content/uploads/2024/11/16_RJPGT_no.2-2024-Number-Nusselt-correlation-annular-space-tube-heat-exchanger_rev1.pdf |
| work_keys_str_mv | AT mariapopa newnumbernusseltcorrelationfortheannularspaceofthetubeintubeheatexchanger |