Results 51 to 60 of about 822 (152)
Theoretical Analysis of Film Condensation in Horizontal Microfin Tubes.
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 2000 A theoretical study has been made of film condensation in helically-grooved, horizontal microfin tubes. The annular flow regime and the stratified flow regime were considered. For the annular flow regime, a previouly developed theoretical model was applied.
Hiroshi HONDA +2 more
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HIGH-FLUX PROCESSES THROUGH ENHANCED HEAT TRANSFER [PDF]
, 2003 Phase-change processes, such as pool and flow boiling, are generally very effective modes of heat transfer. However, the demands of modern thermal systems have required the development of methods to enhance boiling systems.
Bergles, Arthur E.
core
Zhileng xuebao, 2017 Many correlations have been proposed about R404A condensation heat transfer and pressure drop, but all of them apply for smooth tubes or microfin tubes with big diameter. Some correlations are based on 5 mm diameter tube, but the refrigerant is not R404A.
Wang Xuedong +4 more
doaj
An Investigation of Refrigerant Void Fraction in Horizontal, Microfin Tubes [PDF]
HVAC&R Research, 2001 A series of experiments to determine void fraction in both condensation and evaporation have been performed in horizontal microfin tubes with refrigerants R134a and R410A. Mass flux varied from 75 kg/m2·s to 700 kg/m2·s and average test section quality varied from 5% to 80%.
D. A. Yashar +5 more
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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 +2 more sources
Proceedings, 2017 The flow boiling heat transfer is one of the common phenomenon happening in the industries. The micro-fin tubes are one of the geometries widely used to enhance heat transfer rate in boiling condition.
Mohammad Ali Abdous
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Mekanika, 2019 Micro-fin is the popular technique for increasing heat transfer performance of the heat exchangers. In this research, the heat transfer coefficient of water inside counter-flow heat exchangers with micro-fin was investigated by experiment at the Reynolds
Ahmad Imam Rifa’i +2 more
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Alternative Refrigerants in Adiabatic Capillary Tubes [PDF]
, 1996 This study examines the mass flow rate of refrigerants in adiabatic capillary tubes, with an emphasis on the nature of the metastable region for both single component refrigerants and mixtures. The metastable region of a capillary tube was found to be
Dunn, W.E., Meyer, J.J.
core
Case Studies in Thermal EngineeringThe utilization of various tools by researchers to enhance heat transfer (HT) in fluid flow is steadily on the rise. These tools encompass both active and passive methods.
Walid Aich +4 more
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Flow Boiling Heat Transfer Characteristics of R32 inside a Horizontal Small-diameter Microfin Tube [PDF]
, 2016 Currently, the development of high-performance and compact heat exchangers using small diameter tubes of hydraulic diameter less than 5 mm is required to improve the performance of heat exchanger and reduce the charge amount of refrigerant for air ...
Inoue, Norihiro +2 more
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