Results 1 to 10 of about 60,972 (209)
Horizontal convective boiling of R448A, R449A, and R452B within a micro-fin tube. [PDF]
Sci Technol Built Environ, 2016 This article presents local convective boiling measurements in a micro-fin tube for three low global warming potential refrigerants: R448A, R449A, and R452B. An existing correlation was modified to predict multi-component mixtures, which predicted 98% of the measurements to within ±20%.
Kedzierski MA, Kang D.
europepmc +4 more sources
Horizontal convective boiling of R1234yf, R134a, and R450A within a micro-fin tube. [PDF]
Int J Refrig, 2018 This paper presents local convective boiling heat transfer and Fanning friction factor measurements in a micro-fin tube for R134a and two possible low global warming potential (GWP) refrigerant replacements for R134a, namely R1234yf and R450A. Test section heating was achieved with water in either counterflow or in parallel flow with the test ...
Kedzierski MA, Kang D.
europepmc +4 more sources
Numerical Simulation on flow characteristics of the supercritical fluid in Micro-Fin Tube [PDF]
E3S Web of Conferences, 2021 The flow characteristics of the supercritical fluid in the micro-fin tube is the theoretical basis for the development of heat transfer enhancement and flow resistance reduction in the micro-fin tube.
Chen Peng-Fei +4 more
doaj +2 more sources
Evaporation Performance Research of New Micro-fin Copper Tube
Zhileng xuebao, 2007 The evaporation heat transfer was experimentally investigated for the slim, cross, smooth and general micro - fin tubes in our study. The results show that the heat transfer coefficients increase with the refrigerant mass flow rate for all tested tubes ...
Deng bin, Wang kai, Tao Wenquan
doaj +3 more sources
International Journal of Refrigeration, 2017 Abstract This study presents an experimental investigation of the heat transfer occurring during reflux condensation of refrigerant R134a in an inclined micro-fin tube (0.008 m OD, 0.5 m length). The experiments were carried out at a system pressure of 0.74 MPa and at inclination angles of 30°, 38°, 45°, 60° and 90° from the horizontal.
Gökhan Duymaz
exaly +4 more sources
Numerical Simulation Based on Heat Transfer Enhancement of Supercritical Fluid in Micro-Fin Tube [PDF]
E3S Web of Conferences, 2021 With the application of supercritical fluid heat transfer equipment in industrial fields such as solar thermal power generation, chemical industry, aerospace, etc., studying the heat transfer characteristics of supercritical fluid in micro-fin tubes has ...
Chen Peng-Fei +3 more
doaj +1 more source
Energies, 2023 This review study examines flow boiling heat transfer in micro-fin tubes using mixed and pure refrigerants with zero ozone-depleting potential (ODP) and minimal global warming potential (GWP).
Neeraj Kumar Vidhyarthi +6 more
doaj +1 more source
Energy Nexus, 2022 Heat transfer enhancement techniques are accompanied by pressure drop amplification, detrimentally affecting their performance; entropy generation analysis is an effective approach to assess heat transfer enhancement along with resulting pressure drop ...
Shahriyar Ghazanfari Holagh +4 more
doaj +1 more source
Frontiers in Energy Research, 2021 Despite of the large number of research dedicated to condensation heat transfer and pressure drop characteristics in pristine micro-fin tubes, experimental investigation on effects of tube expansion have not been reported in the open literature.
Na Liu, Qian Zhao, Zhixiang Lan
doaj +1 more source
Energies, 2023 An experimental study was performed that compared tube side condensation heat transfer characteristics of enhanced tubes (hydrophobic surface tubes (HYD), herringbone micro fin tube (HB), and a composite hydrophobic/herringbone (micro fin) tube (HYD/HB))
Gangan Zhang +7 more
doaj +1 more source