Results 41 to 50 of about 822 (152)
Engineering Reports, Volume 6, Issue 2, February 2024.The correlation between pressure drop and Reynolds number for both the overlapping and separate airfoils considered in the present study. The pressure drop significantly reduced with the design of the overlapping airfoils. Abstract In this study, we numerically investigated the performance of a printed circuit heat exchanger (PCHE) featuring National ...
Geng‐Chun Kuo +2 more
wiley +1 more source
Numerical study of an exhaust heat recovery system using corrugated tubes and twisted tape inserts [PDF]
, 2014 Thesis (M.S.) University of Alaska Fairbanks, 2014Diesel engine generators are the major power source for small communities in cold regions. Diesel generators waste about 1/3 of their fuel energy in the form of heat through exhaust gas.
Mokkapati, Vamsi Krishna Sarma
core
Ivestigation on Flow Boiling Heat Transfer Characteristics of R404A in Horizontal Microfin Tube
Zhileng xuebao, 2004 Considering R404A as a pure and mixed refrigerant respectively, the boiling heat transfer coefficients were calculated inside horizontal 9.52 mm o.d. microfin tube.
韩晓霞 +3 more
doaj +2 more sources
Flow boiling heat transfer of a non-azeotropic mixture inside a single microchannel [PDF]
, 2014 This paper was presented at the 4th Micro and Nano Flows Conference (MNF2014), which was held at University College, London, UK. The conference was organised by Brunel University and supported by the Italian Union of Thermofluiddynamics, IPEM, the ...
4th Micro and Nano Flows Conference (MNF2014) +3 more
core
Case Studies in Thermal EngineeringMicrofin tubes with internal structures exhibit superior thermo-hydraulic performance, making them indispensable in systems such as air conditioning, chemical industry, and heat pumps.
Jingzhi Zhang +5 more
doaj +1 more source
Advances in Mechanical Engineering, 2020 To develop a comprehensive performance evaluation model of heat transfer tube, the flow condensation heat transfer experiment of R1234yf inside the tube was operated.
Liu Wei
doaj +1 more source
Investigation and analysis of lubricant effects on the performance of an HFC-134a refrigeration system [PDF]
, 1999 The effects of lubricant miscibility and viscosity were evaluated by measuring the performance of an HFC-134a refrigeration system. The focus of this study is different from past studies which have been based on investigating system reliability in that ...
Popovic, Predrag
core +2 more sources
Probabilistic Flow Regime Map Modeling of Two-Phase Flow [PDF]
, 2006 The purpose of this investigation is to develop models for two-phase heat transfer, void fraction, and pressure drop, three key design parameters, in single, smooth, horizontal tubes using a common probabilistic two-phase flow regime basis ...
Chato, J.C., Jassim, E.W., Newell, T.A.
core
Influencing factors on flow boiling of carbon dioxide in enhanced tubes and comparison with correlations [PDF]
, 2020 Carbon dioxide two-phase flow characteristics are different from those of conventional refrigerants, due to the CO2 particular thermodynamic and transport properties obtained by working at high reduced pressures.
Mastrullo R. +4 more
core +1 more source
Forced Convective Condensation of R134A Vapor Inside a Vertical Microfin Tube
Experimental Heat Transfer, 2015 In this study, condensation of pure refrigerant R134a vapor inside a vertical 18° helical microfin tube was experimentally investigated. Tests were performed at saturation pressure of 5.7–5.9 bar with mass fluxes of 20–100 kg/m2s and heat fluxes of 1.7–5.3 kW/m2.
Arslan, G., Eskin, N.
openaire +2 more sources