... Abstract In order to study the effect of liquid-solid interaction and surface temperature on drag reduction and heat transfer, non-equilibrium molecular dynamics simulation is performed to investigate the density profile, velocity profile, velocity slip and temperature profile of fluid...

... Abstract The heat flux in electronics requires the thermal management of printed circuit boards (PCBs) using two-phase cooling methods. In this study, an integrated ceramic heat transfer device, the alumina flat-plate oscillating heat pipe, is developed. The device was fabricated by pressing...

... Abstract This study numerically investigated the condensation heat transfer and flow characteristics of refrigerants R134a in rectangular minichannels. Three-dimensional simulations were carried out at different mass flux values, vapor qualities and gravity conditions through using the VOF...

... Abstract A significantly higher heat transfer coefficient can be achieved through thin-film evaporation. Nanofluids also have significant enhancements in heat transfer. In the current investigation, based on the principle of conservation of momentum and the Young-Laplace equation, considering...

... Abstract Most plate heat exchangers (PHEs) have hydraulic diameters in the range of 2∼5 mm and show characteristics of both macro-channels and micro-channels. Both gravity and surface tension have non-negligible influences and determine the heat transfer and frictional pressure drop...

... Abstract Corrugated plate heat exchangers are increasingly used in two-phase flow applications for their flexible and compact size and the efficient heat transfer performance. This paper presents a review of recent studies on the subject and creates a database containing 533 data points from...

... that the later stage of bubble growth in a binary mixture is controlled by both mass diffusion and heat transfer. The bubble growth characteristics strongly depend on the initial mass fraction of ethanol. Within a large concentration range, a higher content of ethanol is adverse to bubble growth at a constant...

... Abstract Understanding flow and heat transfer in porous media is a matter of prime concern for micro devices. In this work, slip flow and heat transfer of gaseous fluid through the confined porous media is numerically simulated using a multiple-relaxation-time lattice Boltzmann method...

... requirements of computer CPU. By comparing the heat transfer perform of the two heat sinks under three conditions: the top wall temperature of the heat sink, the wall temperature of the heat sink and the temperature difference between the inlet and outlet of hot water, it can be found that the heat transfer...

... Abstract An experimental study on the flow boiling heat transfer in a horizontal annular passage outside the single tube using R410A. The tested tubes contain a smooth tube, a 1EHT tube (dimpled tube) and a herringbone micro-fin tube with the same outside diameter of 12.70 mm. Tests were...

... solar absorbers. Nanofluid Direct Solar Absorber Radiative Property Heat Transfer 1 Copyright © 2009 by ASME Proceedings of MNHMT2009 ASME 2009 2nd Micro/Nanoscale Heat & Mass Transfer International Conference December 18-22,2009,Shanghai,China MNHMT2009-18402 RADIATIVE PROPERTIES...

... It is requested to develop a microscale and high performance heat exchanger for small size energy equipments. The heat transfer performance of the water film on the condensing coils of the microscale evaporative condenser was studied for a single-stage compressed refrigeration cycle system...

... performed at different steam mass fluxes ranged from 128 kg m −2 s −1 to 320 kg m −2 s −1 , while the inlet temperature of cooling water was fixed at 30°C or 50°C. Characteristics of condensation heat transfer and pressure drop in microchannels were measured and discussed. The temperature of Pyrex glass...

... In this paper the experimental flow boiling heat transfer results of a minichannel are presented. A series of experiments was conducted to measure the heat transfer coefficients in a minichannel made of stainless steel (AISI 316) having an internal diameter of 1.7mm and a uniformly heated length...

... (δ¯) is 6.5% at the gravity conditions and 21.5% at zero-gravity conditions when the Re v0 changes from 8000 to 15000. Marangoni condensation Heat transfer film condensation Numerical simulation Copyright © 2009 by ASME 1 MNHMT2009­18020 THE EFFECT OFTHE MARANGONI FLOWON THE FILM...

... nondimensional slip velocity and temperature jump are found by using first and second order slip flow models. The average Nusselt number is also derived by using both first and second order slip flow models. The effects of Knudsen number, aspect ratio and second order slip flow model on the heat transfer...

... Due to its high heat transfer coefficient and low working fluid inventory, the horizontal-tube, falling-film heat exchanger finds wide application as an absorber, condenser and evaporator. Recent advances in nanotechnology suggest the use of nanofluids in heat exchangers. Some researchers find...

..., which means the temperature is almost uniform on the top wall of the vapor chamber. The evaporation heat transfer coefficient could be higher than 20000W/m 2 K. But compared with the small size of heated zone, the evaporation thermal resistant might be still the largest one in the vapor chambers...

... The characteristics of heat transfer and flow in a rectangular channel with bottom of scale groove were investigated with numerical method. The numerical calculation was performed with large eddy simulation. A variety of small scale V-shapes groove with different of depth and space...

... The modeling of heat transfer inside a vacuum packaged MEMS devices has been performed by several researchers mostly through Monte Carlo simulations. In this work, we employ an analytical approach to study the heat transport of gas inside a high vacuum enclosure. In this pressure range...