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Investigation on heat transfer characteristics and flow performance of methane at supercritical pressures

W. X., Hong and A. N., Oumer and F., Basrawi and R., Mamat and Abdul Adam, Abdullah (2018) Investigation on heat transfer characteristics and flow performance of methane at supercritical pressures. In: IOP Conference Series: Materials Science and Engineering: International Conference On Innovative Technology, Engineering And Sciences (ICITES2018), 1-2 March 2018 , Perpustakaan UMP Pekan, Universiti Malaysia Pahang. pp. 1-9.. ISSN 1757-8981 (Print), 1757-899X (Online)

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Heat transfer and flow characteristics of cryogenic methane in regenerative cooling system at supercritical pressures has been determined numerically. Thermo-physical properties of supercritical methane are discussed. In addition to that, previous studies on experiment and simulation are reviewed. All geometry, related equations, boundary conditions and performance parameters are reviewed in detail. For mesh independence test and model validation, simulation results are compared to experimental work by Gu et al. (Gu, Li et al. 2013). It is found that simulation results show good agreement with experimental data. All data deviation lies within 10 % which is generally accepted by former researchers. The effects of four different performance parameters namely inlet pressure, inlet temperature, heat flux and mass flux on heat transfer and flow performance of supercritical methane in horizontal miniature tube are identified. Several results are generated based on experimental conditions which include inlet pressure of 5 to 8 MPa, inlet temperature of 120 to 150 K, heat flux of 2 to 5 MW/m2 and mass flux of 7000 to 15000 kg/m2s. Heat transfer performance factor and friction factor are then computed to obtain Goodness factor which optimum parameters for certain boundary conditions are chosen. Lastly, statistical analysis with Response Surface Method (RSM) is carried out to obtain regression for both heat transfer and pressure drop.

Item Type: Conference or Workshop Item (Lecture)
Additional Information: Index by Scopus
Uncontrolled Keywords: Heat transfer; Cryogenic methane; Supercritical pressures
Subjects: T Technology > TJ Mechanical engineering and machinery
Faculty/Division: Faculty of Mechanical Engineering
Depositing User: Mrs. Neng Sury Sulaiman
Date Deposited: 29 Jun 2018 04:45
Last Modified: 07 Nov 2018 08:39
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