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  • Open Access

    ARTICLE

    Flow and Heat Transfer Features of Supercritical Pressure CO2 in Horizontal Flows under Whole-Wall Heating Conditions

    Jiangfeng Guo1,2,3,*, Hongjie Yu1

    Frontiers in Heat and Mass Transfer, Vol.22, No.6, pp. 1575-1595, 2024, DOI:10.32604/fhmt.2024.058179 - 19 December 2024

    Abstract Based on the first and second laws of thermodynamics, the heat transfer and flow (thermohydraulic) characteristics of horizontal supercritical pressure CO2 (S-CO2) in a circular pipe under heating conditions were investigated numerically. Heating flows in two different diameters (d) of 4 and 6 mm were simulated in pipes with pressures of 8 MPa, mass fluxes (G) of 300 and 400 kg/(m2·s), and heat fluxes (q) of 50, 75 and 100 kW/m2. In the d = 4 mm pipe, the peak heat transfer coefficient (hb) was about 3 times higher than in the d = 6 mm pipe, while the entropy… More > Graphic Abstract

    Flow and Heat Transfer Features of Supercritical Pressure CO<sub>2</sub> in Horizontal Flows under Whole-Wall Heating Conditions

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  • Open Access

    ARTICLE

    Enhancing Heavy Crude Oil Flow in Pipelines through Heating-Induced Viscosity Reduction in the Petroleum Industry

    Ramzy S. Hamied1,*, Anwar N. Mohammed Ali1, Khalid A. Sukkar2

    FDMP-Fluid Dynamics & Materials Processing, Vol.19, No.8, pp. 2027-2039, 2023, DOI:10.32604/fdmp.2023.027312 - 04 April 2023

    Abstract The process of transporting crude oil across pipelines is one of the most critical aspects of the midstream petroleum industry. In the present experimental work, the effect of temperature, pressure drop, and pipe diameter on the flow rate of heavy crude oil have been assessed. Moreover, the total discharge and energy losses have been evaluated in order to demonstrate the improvements potentially achievable by using solar heating method replacing pipe, and adjusting the value of the initial pressure difference. Crude oil of API = 20 has been used for the experiments, with the studied pipelines sections… More > Graphic Abstract

    Enhancing Heavy Crude Oil Flow in Pipelines through Heating-Induced Viscosity Reduction in the Petroleum Industry

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