Parasitic Effect of Tube Wall Longitudinal Heat Conduction on Cryogenic Gas Temperature
Longitudinal heat conduction is an important parameter in the cryogenic field, especially in cryogenic heat exchangers. In the present work, the parasitic effect of tube wall longitudinal heat conduction on temperature measurement has been studied in cryogenic laminar hydrogen flow. The effects of v...
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Iranian Association of Chemical Engineering (IAChE)
2017-03-01
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| Series: | Iranian Journal of Chemical Engineering |
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| Online Access: | https://www.ijche.com/article_43880_53b2c553050bcfc1cf852e0eb2250eb1.pdf |
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| author | A. Saberimoghaddam M. M Bahri Rasht Abadi |
| author_facet | A. Saberimoghaddam M. M Bahri Rasht Abadi |
| author_sort | A. Saberimoghaddam |
| collection | DOAJ |
| description | Longitudinal heat conduction is an important parameter in the cryogenic field, especially in cryogenic heat exchangers. In the present work, the parasitic effect of tube wall longitudinal heat conduction on temperature measurement has been studied in cryogenic laminar hydrogen flow. The effects of various parameters such as wall cold end temperature, wall thermal conductivity, gas volumetric flow, and tube wall thickness have been investigated by finite element method. The model was also validated versus the data obtained from experiments. The simulations showed that the temperature decrease in gas flow occurs in the end section of tube length. This section is independent of tube cold end temperature and causes for large temperature measurement error in laminar flows. Results showed that a few millimeters change in temperature sensor position results in measurement errors up to 80 %. The higher tube wall thermal conductivity and tube wall thickness result in higher parasitic effects of longitudinal heat conduction. |
| format | Article |
| id | doaj-art-34b2b4aaab694db2962bd90b92095bd3 |
| institution | OA Journals |
| issn | 1735-5397 2008-2355 |
| language | English |
| publishDate | 2017-03-01 |
| publisher | Iranian Association of Chemical Engineering (IAChE) |
| record_format | Article |
| series | Iranian Journal of Chemical Engineering |
| spelling | doaj-art-34b2b4aaab694db2962bd90b92095bd32025-08-20T02:25:08ZengIranian Association of Chemical Engineering (IAChE)Iranian Journal of Chemical Engineering1735-53972008-23552017-03-01141152543880Parasitic Effect of Tube Wall Longitudinal Heat Conduction on Cryogenic Gas TemperatureA. Saberimoghaddam0M. M Bahri Rasht Abadi1Department of Chemistry and Chemical Engineering, Faculty of Chemical Engineering, Malek Ashtar University of Technology (MUT), Lavizan 158751774, Tehran, IranDepartment of Chemistry and Chemical Engineering, Faculty of Chemical Engineering, Malek Ashtar University of Technology (MUT), Lavizan 158751774, Tehran, IranLongitudinal heat conduction is an important parameter in the cryogenic field, especially in cryogenic heat exchangers. In the present work, the parasitic effect of tube wall longitudinal heat conduction on temperature measurement has been studied in cryogenic laminar hydrogen flow. The effects of various parameters such as wall cold end temperature, wall thermal conductivity, gas volumetric flow, and tube wall thickness have been investigated by finite element method. The model was also validated versus the data obtained from experiments. The simulations showed that the temperature decrease in gas flow occurs in the end section of tube length. This section is independent of tube cold end temperature and causes for large temperature measurement error in laminar flows. Results showed that a few millimeters change in temperature sensor position results in measurement errors up to 80 %. The higher tube wall thermal conductivity and tube wall thickness result in higher parasitic effects of longitudinal heat conduction.https://www.ijche.com/article_43880_53b2c553050bcfc1cf852e0eb2250eb1.pdflongitudinal heat conductioncryogenicheat exchangerparasitic effect |
| spellingShingle | A. Saberimoghaddam M. M Bahri Rasht Abadi Parasitic Effect of Tube Wall Longitudinal Heat Conduction on Cryogenic Gas Temperature Iranian Journal of Chemical Engineering longitudinal heat conduction cryogenic heat exchanger parasitic effect |
| title | Parasitic Effect of Tube Wall Longitudinal Heat Conduction on Cryogenic Gas Temperature |
| title_full | Parasitic Effect of Tube Wall Longitudinal Heat Conduction on Cryogenic Gas Temperature |
| title_fullStr | Parasitic Effect of Tube Wall Longitudinal Heat Conduction on Cryogenic Gas Temperature |
| title_full_unstemmed | Parasitic Effect of Tube Wall Longitudinal Heat Conduction on Cryogenic Gas Temperature |
| title_short | Parasitic Effect of Tube Wall Longitudinal Heat Conduction on Cryogenic Gas Temperature |
| title_sort | parasitic effect of tube wall longitudinal heat conduction on cryogenic gas temperature |
| topic | longitudinal heat conduction cryogenic heat exchanger parasitic effect |
| url | https://www.ijche.com/article_43880_53b2c553050bcfc1cf852e0eb2250eb1.pdf |
| work_keys_str_mv | AT asaberimoghaddam parasiticeffectoftubewalllongitudinalheatconductiononcryogenicgastemperature AT mmbahrirashtabadi parasiticeffectoftubewalllongitudinalheatconductiononcryogenicgastemperature |