Numerical Investigation into the Development Performance of Gas Hydrate by Depressurization Based on Heat Transfer and Entropy Generation Analyses
The purpose of this study is to analyze the dynamic properties of gas hydrate development from a large hydrate simulator through numerical simulation. A mathematical model of heat transfer and entropy production of methane hydrate dissociation by depressurization has been established, and the change...
Published in: | Entropy |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
MDPI AG
2020
|
Subjects: | |
Online Access: | https://doi.org/10.3390/e22111212 https://doaj.org/article/266d8a4810f047d0ac9869876ed446de |
id |
ftdoajarticles:oai:doaj.org/article:266d8a4810f047d0ac9869876ed446de |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:266d8a4810f047d0ac9869876ed446de 2023-05-15T17:11:46+02:00 Numerical Investigation into the Development Performance of Gas Hydrate by Depressurization Based on Heat Transfer and Entropy Generation Analyses Bo Li Wen-Na Wei Qing-Cui Wan Kang Peng Ling-Ling Chen 2020-10-01T00:00:00Z https://doi.org/10.3390/e22111212 https://doaj.org/article/266d8a4810f047d0ac9869876ed446de EN eng MDPI AG https://www.mdpi.com/1099-4300/22/11/1212 https://doaj.org/toc/1099-4300 doi:10.3390/e22111212 1099-4300 https://doaj.org/article/266d8a4810f047d0ac9869876ed446de Entropy, Vol 22, Iss 1212, p 1212 (2020) hydrate depressurization entropy generation heat transfer energy loss Science Q Astrophysics QB460-466 Physics QC1-999 article 2020 ftdoajarticles https://doi.org/10.3390/e22111212 2022-12-30T23:37:34Z The purpose of this study is to analyze the dynamic properties of gas hydrate development from a large hydrate simulator through numerical simulation. A mathematical model of heat transfer and entropy production of methane hydrate dissociation by depressurization has been established, and the change behaviors of various heat flows and entropy generations have been evaluated. Simulation results show that most of the heat supplied from outside is assimilated by methane hydrate. The energy loss caused by the fluid production is insignificant in comparison to the heat assimilation of the hydrate reservoir. The entropy generation of gas hydrate can be considered as the entropy flow from the ambient environment to the hydrate particles, and it is favorable from the perspective of efficient hydrate exploitation. On the contrary, the undesirable entropy generations of water, gas and quartz sand are induced by the irreversible heat conduction and thermal convection under notable temperature gradient in the deposit. Although lower production pressure will lead to larger entropy production of the whole system, the irreversible energy loss is always extremely limited when compared with the amount of thermal energy utilized by methane hydrate. The production pressure should be set as low as possible for the purpose of enhancing exploitation efficiency, as the entropy production rate is not sensitive to the energy recovery rate under depressurization. Article in Journal/Newspaper Methane hydrate Directory of Open Access Journals: DOAJ Articles Entropy 22 11 1212 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
hydrate depressurization entropy generation heat transfer energy loss Science Q Astrophysics QB460-466 Physics QC1-999 |
spellingShingle |
hydrate depressurization entropy generation heat transfer energy loss Science Q Astrophysics QB460-466 Physics QC1-999 Bo Li Wen-Na Wei Qing-Cui Wan Kang Peng Ling-Ling Chen Numerical Investigation into the Development Performance of Gas Hydrate by Depressurization Based on Heat Transfer and Entropy Generation Analyses |
topic_facet |
hydrate depressurization entropy generation heat transfer energy loss Science Q Astrophysics QB460-466 Physics QC1-999 |
description |
The purpose of this study is to analyze the dynamic properties of gas hydrate development from a large hydrate simulator through numerical simulation. A mathematical model of heat transfer and entropy production of methane hydrate dissociation by depressurization has been established, and the change behaviors of various heat flows and entropy generations have been evaluated. Simulation results show that most of the heat supplied from outside is assimilated by methane hydrate. The energy loss caused by the fluid production is insignificant in comparison to the heat assimilation of the hydrate reservoir. The entropy generation of gas hydrate can be considered as the entropy flow from the ambient environment to the hydrate particles, and it is favorable from the perspective of efficient hydrate exploitation. On the contrary, the undesirable entropy generations of water, gas and quartz sand are induced by the irreversible heat conduction and thermal convection under notable temperature gradient in the deposit. Although lower production pressure will lead to larger entropy production of the whole system, the irreversible energy loss is always extremely limited when compared with the amount of thermal energy utilized by methane hydrate. The production pressure should be set as low as possible for the purpose of enhancing exploitation efficiency, as the entropy production rate is not sensitive to the energy recovery rate under depressurization. |
format |
Article in Journal/Newspaper |
author |
Bo Li Wen-Na Wei Qing-Cui Wan Kang Peng Ling-Ling Chen |
author_facet |
Bo Li Wen-Na Wei Qing-Cui Wan Kang Peng Ling-Ling Chen |
author_sort |
Bo Li |
title |
Numerical Investigation into the Development Performance of Gas Hydrate by Depressurization Based on Heat Transfer and Entropy Generation Analyses |
title_short |
Numerical Investigation into the Development Performance of Gas Hydrate by Depressurization Based on Heat Transfer and Entropy Generation Analyses |
title_full |
Numerical Investigation into the Development Performance of Gas Hydrate by Depressurization Based on Heat Transfer and Entropy Generation Analyses |
title_fullStr |
Numerical Investigation into the Development Performance of Gas Hydrate by Depressurization Based on Heat Transfer and Entropy Generation Analyses |
title_full_unstemmed |
Numerical Investigation into the Development Performance of Gas Hydrate by Depressurization Based on Heat Transfer and Entropy Generation Analyses |
title_sort |
numerical investigation into the development performance of gas hydrate by depressurization based on heat transfer and entropy generation analyses |
publisher |
MDPI AG |
publishDate |
2020 |
url |
https://doi.org/10.3390/e22111212 https://doaj.org/article/266d8a4810f047d0ac9869876ed446de |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_source |
Entropy, Vol 22, Iss 1212, p 1212 (2020) |
op_relation |
https://www.mdpi.com/1099-4300/22/11/1212 https://doaj.org/toc/1099-4300 doi:10.3390/e22111212 1099-4300 https://doaj.org/article/266d8a4810f047d0ac9869876ed446de |
op_doi |
https://doi.org/10.3390/e22111212 |
container_title |
Entropy |
container_volume |
22 |
container_issue |
11 |
container_start_page |
1212 |
_version_ |
1766068532746911744 |