Maqola

Numercial modeling for enhanced heat transfer efficiency of spiral coils with supercritical fluid flow under different operating conditions

Xinling WangDongbei university of finance and economics, Dalian, 116000, Liaoning, ChinaNaeim FaroukMechanical Engineering Department, College of Engineering in Alkharj, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi ArabiaXiaoqing FuChina University of Petroleum-Beijing,Beijing, 100000,ChinaPradeep Kumar SinghDepartment of Mechanical Engineering, Institute of Engineering & Technology, GLA University, Mathura, U.P., 281406, IndiaXu GuoYingkou qingying petrifaction equipment co., ltd, Yingkou, 115000, Liaoning, ChinaFahad M. AlhomayaniApplied College, Taif University, Saudi ArabiaBaseem KhanDepartment of Electrical and Computer Engineering, Hawassa University, Hawassa, EthiopiaFawaz S. AlharbiDepartment of Mechanical Engineering, College of Engineering, University of Hafr Al Batin, P.O. Box 1803, Hafr Al Batin 39524, Saudi ArabiaBarno AbdullaevaVice-Rector for Scientific Affairs, Tashkent State Pedagogical University, Tashkent, UzbekistanLaith H. AlzubaidiCollege of technical engineering, the Islamic University of Al Diwaniyah, Al Diwaniyah, IraqYasser ElmasryDepartment of Mathematics - College of Science - King Khalid University, P.O. Box 9004, Abha 61466, Saudi ArabiaHakim AL Garalleh

Case Studies in Thermal Engineeringjournal2024en

ABI

Annotatsiya

This research investigates the thermohydraulic performance and exergy destruction associated with the flow of supercritical carbon dioxide (sCO 2 ) within spirally coiled mini tubes. The study examines the impact of different cross-sectional geometries. The primary objective of the study is to examine the impact of critical parameters, including shape, hydraulic diameter, inlet temperature, mass flux, and operating pressure, on important variables such as friction factor, heat transfer coefficient, and exergy efficiency. The computational simulation employs the RNG k−ε model. The Coupled algorithm was utilized for the determination of velocity and pressure fields, utilizing second-order discretization for domain partitioning and first-order discretization for other terms. The carbon dioxide (CO 2 ) was conceptualized as a compressible gas with complex thermophysical attributes that are contingent upon variations in temperature and pressure. The thermophysical properties of carbon dioxide are evaluated within a defined range of operating conditions (298. 15 K < T < 455 K and 8 MPa < p < 10 MPa). The observed trends in HTC (heat transfer coefficient) demonstrate a correlation with specific heat, showing a peak at lower temperatures under increased operating pressures. Elevated operational pressure results in a reduction of the maximum HTC. The augmentation of mass flux results in an increase in heat transfer coefficient, thereby indicating an improvement in system efficiency. An augmentation in hydraulic diameter yields diminished heat transfer coefficients, mitigated pressure loss, and heightened exergy destruction.

Mavzular

Heat transfer and supercritical fluids Subcritical and Supercritical Water Processes Rocket and propulsion systems research

Identifikatorlar

DOI: 10.1016/j.csite.2024.105419

Iqtiboslar va manbalar

0 ta iqtibos35 ta foydalanilgan manba

Koʻrsatkichlar — AkademScholar · Tez orada