THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

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Zi-Jie Wei

,

Cong Li

,

Bo Yu

,

Wei Luo

,

Jian-Ping Yang

STUDY ON HEAT TRANSFER MODEL THEORY AND NUMERICAL SIMULATION USED IN DEEP ROCK IN-SITU TEMPERATURE-PRESERVED CORING

ABSTRACT
Deep rock in-situ temperature-preserved corers are important when evaluating and developing deep resources. The core temperature change law is the basis for realizing thermal insulation coring during coring, and it is explored from the perspective of the theoretical heat transfer model and numerical simulation. The results indicate that at a 150°C deep rock temperature, the theoretical calculation results only have a difference of approximately 4% compared with the minimum value of numerical simulation. With increasing core lifting speed, the core cooling range decreases, the power demand for active thermal insulation decreases. A core lifting speed of 2.5 m/s can meet the lower energy supply requirements and engineering costs at the same time. The research results can provide theoretical and technical support for deep resource mining.
KEYWORDS
deep rock in-situ temperature-preserved coring, theoretical heat transfer model, numerical simulation
PAPER SUBMITTED: 2022-08-19
PAPER REVISED: 2022-11-22
PAPER ACCEPTED: 2022-11-25
PUBLISHED ONLINE: 2023-03-04
DOI REFERENCE: https://doi.org/10.2298/TSCI2301639W
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2023, VOLUME 27, ISSUE Issue 1, PAGES [639 - 646]
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Study on heat transfer model theory and numerical simulation used in deep rock in-situ temperature-preserved coring

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