avroenОмский научный вестник. Серия "Авиационно-ракетное и энергетическое машиностроение"Omsk Scientific Bulletin. Series Aviation-Rocket and Power Engineering2588-03732587-764XОмский государственный технический университет10.25206/2588-0373-2025-9-1-56-63USLHRMavroen-35Research ArticleЭНЕРГЕТИЧЕСКОЕ И ХИМИЧЕСКОЕ МАШИНОСТРОЕНИЕPOWER AND CHEMICAL ENGINEERINGПостроение расчетной модели процесса захолаживания криогенного хранилища для сжиженного природного газаConstruction of a computational model for the process of cooling down a cryogenic storage facility for liquefied natural gashttps://orcid.org/0000-0003-0301-0151РодькинЯ. Э.RodkinYa. E.

РОДЬКИН Яков Эдуардович, аспирант образова­тельного центра «Энергоэффективные инженерные системы»

191002, г. Санкт-Петербург, ул. Ломоносова, д. 9

RODKIN Yakov Eduardovich, Graduate Student of the «Energy Efficient Engineering Systems» Educational Centre

Saint Petersburg, Lomonosov Str., 9, 191002

rodyakov1997@niuitmo.ruhttps://orcid.org/0000-0002-4580-6070СулинА. Б.SulinA. B.

СУЛИН Александр Борисович, доктор технических наук, профессор образовательного центра «Энерго­эффективные инженерные системы»

191002, г. Санкт-Петербург, ул. Ломоносова, д. 9

AuthorID (РИНЦ): 445299

AuthorID (SCOPUS): 6507491881

ResearcherID: W-4842-2017

SULIN Aleksander Borisovich, Doctor of Technical Sciences, Professor of the «Energy Efficient Engineering Systems» Educational Centre

Saint Petersburg, Lomonosov Str., 9, 191002

AuthorID (РИНЦ): 445299

AuthorID (SCOPUS): 6507491881

ResearcherID: W-4842-2017

absulin@itmo.ruУниверситет ИТМОРоссияITMO UniversityRussian Federation202530032025915663Copyright © Родькин Я.Э., Сулин А.Б., 20252025Родькин Я.Э., Сулин А.Б.Rodkin Y.E., Sulin A.B.This work is licensed under a Creative Commons Attribution 4.0 License.https://ariem.omgtu.ru/jour/article/view/35

В данной статье представлено сравнительное аналитическое исследование процесса двухфаз­ного и конвективного охлаждения криогенного хранилища сжиженного природного газа. Для моделирования нестационарного теплообмена в изоляционной конструкции хранилища используется метод Канторовича–Бубнова–Галеркина. Этот метод позволяет получить приближенные аналитические решения, описывающие температурные поля и динамику охлаждения. В рамках исследования получены зависимости изменения температурного напора на внутренней стенке резервуара при захолаживании метаном и воздухом от времени, а также построены графики изотерм в газовом пространстве резервуара при конвективном захолаживании воздухом.

As part of the preparation of the cryogenic storage facility for operation, the following processes are performed during commissioning: inerting — displacing air from the tank volume in order to exclude the possibility of forming an explosive mixture; substitution — replacing neutral gas (nitrogen) with methane; chilling — cooling the storage tank structure to a temperature of 143 K. Chilling allows to reduce the amount of regasified gas during loading and storage, eliminate the occurrence of low-temperature stresses in the structural elements, and reduce the likelihood of emergency situations during operation. This article presents a comparative analytical study of the process of two-phase and convective cooling of a cryogenic storage facility for liquefied natural gas. The Kantorovich–Bubnov–Galerkin method is used to model non-stationary heat exchange in the storage facility's insulating structure. This method allows to obtain approximate analytical solutions describing temperature fields and cooling dynamics. As part of the study, dependencies of the change in temperature pressure on the inner wall of the tank during cooling with methane and air over time are obtained, and graphs of isotherms in the gas space of the tank during convective cooling with air were constructed.

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The authors declare that there are no conflicts of interest present.