...Chungpyo Hong; Yutaka Asako; Mohammad Faghri; Ichiro Ueno In this paper, we report on experimental results to measure the total temperature of nitrogen gas at the inlet and outlet of microtubes with constant wall temperature and to quantitatively determine the heat transfer rates. Experiments were...

...Jing-yu Ran; Sheng Wu; Lin Yang; Li Zhang surface catalytic combustion wall heat transfer microtube premixed CH4/air Greek Symbols β = temperature exponent λ = thermal conductivity (W/m/K) μ = viscosity (Pa·s) μ i , ε i = coverage dependence...

... 25 05 2012 Experiments were conducted to investigate local heat transfer coefficients and flow characteristics of air flow in a 962  μ m inner diameter stainless steel microtube (minichannel). The effects of heat loss, axial heat conduction and viscous heating were systematically analyzed...

...Fayao Xu; Hugen Ma The original Graetz problem is extended to slip-flow in microtube. The extended Graetz problem in slip-flow with the isothermal boundary condition on the wall was solved using conventional energy equation with both the velocity slip and the temperature jump condition of slip-flow...

... discussed. The problem of hydrodynamically and thermally fully developed flow (HFDF and TFDF, respectively) in a microtube with uniform and CHF at the wall has been analytically solved in the slip flow regime by Sparrow and Lin [( 15 )]. They used classic first-order boundary conditions 3 , 11...

...Chungpyo Hong; Takaharu Yamamoto; Yutaka Asako; Koichi Suzuki This paper describes experimental results on heat transfer characteristics of gaseous flow in a microtube with constant wall temperature. The experiments were performed for nitrogen gas flow through three microtubes of 123 μm, 163 μm...

...T. T. Zhang; L. Jia; C. W. Li; L. X. Yang; Y. Jaluria An experimental system for single-phase gas flow in microtubes has been developed. The effects of viscous heating and compressibility on the flow and temperature field were studied for a wide range of governing parameters. Also, an analytical...

... fraction becomes appreciable, which results in an increase in the average velocity, thereby increasing the CHF limit. heat transfer microchannel flow two-phase flow CHF boiling exit quality subcooled saturated microtube For more than a decade, one of the important applications...

.... , 2005 , “ Effect of Tube Diameter on Boiling Heat Transfer of R-134a in Horizontal Small-Diameter Tubes ,” Int. J. Heat Mass Transfer 0017-9310 , 48 , pp. 4973 – 4984 . Grohmann , S. , 2005 , “ Measurement and Modeling of Single-Phase and Flow-Boiling Heat Transfer in Microtubes ,” Int...