The presence of particles in liquid-solid fluidized beds enhances the bed heat transfer, because the movement of the particles leads to an increased turbulence in the system. Moreover, the violent movement of the particles has a positive effect on fouling of the heat transfer surface. The aim of this investigation was to perform systematic measurements of bed voidage and heat transfer coeff...

The computer program GearKURT has been created to calculate mechanical gears. allows you gears:
 - closed cylindrical spur gear
 helical open Novikov's bevel gear with indirect teeth
 worm-gear.
 a dialog interface written in the object-oriented programming language Delphi and compiled into an exe-file. choose necessary material method of heat treatment for manufacture gears...

Modern portable electronics have seen component heat loads increasing, while the space available for heat dissipation has decreased, both factors working against the thermal designer. This requires that the thermal management system be optimized to attain the highest performance in the given space. While adding fins to the heat sink increases surface area, it also increases the pressure drop. T...

Design and developmental methodology of thermoelectric refrigeration has been explained in detail also the theoretical physical characteristics of thermoelectric cooling module used in this research work have been investigated. Authors have been designed and developed an experimental prototype of thermoelectric refrigeration system working on solar photo voltaic cells generated DC voltage. The ...

The LED light source with low power and high luminous efficiency has been used in the automotive industry. In this study, a 15W LED fog lamp with better visibility and low price was developed using the SMD type LED modules. To this end, the thermal performance of the fog lamp was optimized by adjusting the number of heat sink fins, heat pipes and the emissivity of the heatsink. As a result, the...

Distributed propulsion concepts are promising in terms of improved fuel burn, better aerodynamic performance, and greater control. Superconducting networks are being considered for their superior power density and efficiency. This study discusses the design of cryogenic cooling systems which are essential for normal operation of superconducting materials. This research project has identified si...

Turbulent heat transfer in Helically Corrugated Tubes (HCT) was numerically investigated for pure water and SiO2 nanofluid using Computational Fluid Dynamics (CFD). This study was carried out for different corrugating pitches (5, 7, 8 mm) and heights (0.5, 0.75, 1.25 mm) at various Reynolds numbers ranging from 5000 to 13300. The effect of nanoparticles on heat transfer augmentation for plain t...

It has been well established that heat transfer in a helical coil is higher than that in a corresponding straight pipe. However, the detailed characteristics of fluid flow and heat transfer inside helical coil is not available from the present literature. This paper brings out clearly the variation of local Nusselt number along the length and circumference at the wall of a helical pipe. Movemen...

Two new integrated models with heat source–heat sink are established, in which isothermal liquid cooling channels triangle or square sections are, respectively, embedded a cylindrical heating body uniform production. Based on constructal theory, under the conditions of fixed cylinder cross-sectional area and proportion channels, taking dimensionless maximum temperature entransy equivalent therm...