Derivation of three-dimensional heat transfer mathematical equations to predict conductivity of insulation systems for liquid nitrogen pipe flow
Cryogenics is dealing with very low temperatures of less than 120 K. Thermal insulation is a key to minimize heat leak in cryogenics during transportation in transfer line. The present study is conducted to derive three-dimensional heat transfer mathematical equations to predict conductivity of insu...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English English |
| Published: |
Institut Pengurusan Penyelidikan, UiTM
2017
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| Subjects: | |
| Online Access: | http://umpir.ump.edu.my/id/eprint/20632/1/Derivation%20of%20Three-Dimensional%20Heat%20Transfer%20Mathematical%20Equations%20to%20Predict%20Conductivity%20of%20Insulation%20Systems%20for%20Liquid%20Nitrogen%20Pipe%20Flow.pdf http://umpir.ump.edu.my/id/eprint/20632/7/Derivation%20of%20Three-Dimensional%20Heat%20Transfer%20Mathematical%20Equations%20to%20Predict%20Conductivity%20of%20Insulation%20Systems%20for%20Liquid%20Nitrogen%20Pipe%20Flow%201.pdf http://umpir.ump.edu.my/id/eprint/20632/ http://jmeche.com/wp-content/uploads/bsk-pdf-manager/4_Vol_SI_2_1_T1_16_258.pdf |
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| Summary: | Cryogenics is dealing with very low temperatures of less than 120 K. Thermal insulation is a key to minimize heat leak in cryogenics during transportation in transfer line. The present study is conducted to derive three-dimensional heat transfer mathematical equations to predict conductivity of insulation systems for liquid nitrogen pipe flow. Elliptic differential equations on special domains were derived based on Fourier method for three-dimensional heat equations. As a result from the study, three-dimensional heat conduction equation for a cylindrical problem was successfully derived. The derived equation provides a mathematical solution to determine the heat transfer rate for a system of cryogenic pipe insulated with multiple layers. |
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