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A new method for evaluating the heat leak of cryogenic vessels without exhaust gas
The thermal insulation performance of cryogenic vessels is evaluated by the boil-off gas (BOG) rate and heat leak as a reference standard; however, it consumes considerable testing time and working medium. In this study, we proposed a method of evaluating the thermal insulation performance of cryoge...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10598537/ https://www.ncbi.nlm.nih.gov/pubmed/37885708 http://dx.doi.org/10.1016/j.heliyon.2023.e21370 |
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author | Li, Zhengqing Wang, Xiaojun Han, Xianhu Cai, Yuhong Wang, Yi |
author_facet | Li, Zhengqing Wang, Xiaojun Han, Xianhu Cai, Yuhong Wang, Yi |
author_sort | Li, Zhengqing |
collection | PubMed |
description | The thermal insulation performance of cryogenic vessels is evaluated by the boil-off gas (BOG) rate and heat leak as a reference standard; however, it consumes considerable testing time and working medium. In this study, we proposed a method of evaluating the thermal insulation performance of cryogenic vessels from the heat leak in the self-pressurization process, which can minimize the testing time and preserve the working medium. To improve the accuracy of heat leak calculation, the vapor temperature distribution of cryogenic vessels is analyzed and considered in the calculation of heat leak. However, it is ignored in the current standard test method. In this study, the energy equations of cryogenic vessels in the self-pressurization process were established by considering the vapor temperature distribution. Then, based on the experimental data, the heat leak was calculated for demonstrating the thermal insulation performance of cryogenic vessels depending on the new method. The results indicate that the vapor temperature should be seriously considered when the liquid level ratio is less than 50 %. |
format | Online Article Text |
id | pubmed-10598537 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-105985372023-10-26 A new method for evaluating the heat leak of cryogenic vessels without exhaust gas Li, Zhengqing Wang, Xiaojun Han, Xianhu Cai, Yuhong Wang, Yi Heliyon Research Article The thermal insulation performance of cryogenic vessels is evaluated by the boil-off gas (BOG) rate and heat leak as a reference standard; however, it consumes considerable testing time and working medium. In this study, we proposed a method of evaluating the thermal insulation performance of cryogenic vessels from the heat leak in the self-pressurization process, which can minimize the testing time and preserve the working medium. To improve the accuracy of heat leak calculation, the vapor temperature distribution of cryogenic vessels is analyzed and considered in the calculation of heat leak. However, it is ignored in the current standard test method. In this study, the energy equations of cryogenic vessels in the self-pressurization process were established by considering the vapor temperature distribution. Then, based on the experimental data, the heat leak was calculated for demonstrating the thermal insulation performance of cryogenic vessels depending on the new method. The results indicate that the vapor temperature should be seriously considered when the liquid level ratio is less than 50 %. Elsevier 2023-10-21 /pmc/articles/PMC10598537/ /pubmed/37885708 http://dx.doi.org/10.1016/j.heliyon.2023.e21370 Text en © 2023 The Authors https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Research Article Li, Zhengqing Wang, Xiaojun Han, Xianhu Cai, Yuhong Wang, Yi A new method for evaluating the heat leak of cryogenic vessels without exhaust gas |
title | A new method for evaluating the heat leak of cryogenic vessels without exhaust gas |
title_full | A new method for evaluating the heat leak of cryogenic vessels without exhaust gas |
title_fullStr | A new method for evaluating the heat leak of cryogenic vessels without exhaust gas |
title_full_unstemmed | A new method for evaluating the heat leak of cryogenic vessels without exhaust gas |
title_short | A new method for evaluating the heat leak of cryogenic vessels without exhaust gas |
title_sort | new method for evaluating the heat leak of cryogenic vessels without exhaust gas |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10598537/ https://www.ncbi.nlm.nih.gov/pubmed/37885708 http://dx.doi.org/10.1016/j.heliyon.2023.e21370 |
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