The effect of temperature and moisture content on the thermal properties such as thermal conductivity, specific heat andbulk thermal diffusivity was evaluated. The thermal conductivity was measured by the transient technique using a line heat source. The maximum slope method was used to analyse the line source heating data for thermal conductivity determination. The specific heat capacity was m...

A mathematical model is presented to determine tissue temperature in the periphery of human thigh during moderate(23°C) and cool(15°C) environment temperature and the effect of sweat evaporation on heat loss from human body is also measured. The region under study is a circular cross-section of human thigh and further has been partitioned into three concentric tissues layers on the basis of bio...

The Chinese high temperature gas-cooled reactor pebble bed module (HTR-PM) demonstration project has attracted increasing attention. In order to support the project, a large-scale heat transfer test facility has been constructed for pebble bed effective thermal conductivity measurement over the whole temperature range (0~1600 ◦C). Based on different heat transfer mechanisms in the randomly pack...

An in-well pumped InGaAs disk laser emitting at 984 nm is presented. The device is designed to eliminate major loss mechanisms attributed to heat generation in semiconductor disk lasers. An output power of close to 7W at room temperature is achieved by optical excitation with a fiber-coupled 940 nm diode laser. Strong cooling or the use of heat spreaders with high thermal conductivity is not ne...

The influence of self-heating by power dissipation on the operation of semiconductor devices proves to be important not only in the area of power electronics, but also for VLSI devices. Hence, besides the carrier densities (or quasi-Fermi potentials, alternatively), temperature has to be included as additional dynamic state variable in the simulation of the electric and thermal behavior of such...

A nanofluid is a dilute liquid suspension of particles with at least one critical dimension smaller than ~100 nm. Research works so far suggest that nanofluids offer excellent heat transfer enhancement over conventional base fluids. The enhancement depends on several factors such as particle shape, particle size distribution, volume fraction of nanoparticles, temperature, pH, and thermal conduc...

Ionanofluids are a new and innovative class of heat transfer fluids which exhibit fascinating thermophysical properties compared to their base ionic liquids. This paper deals with the findings of thermal conductivity and specific heat capacity of ionanofluids as a function of a temperature and concentration of nanotubes. Simulation results using ionanofluids as coolants in heat exchanger are al...

In this study, Bio-based carbon nanotubes (CNTs) have received considerable research attention due to their comparative advantages of high level stability, simplistic use, low toxicity and overall environmental friendliness. New potentials for improvement in heat transfer applications are presented due to their high aspect ratio, high thermal conductivity and special surface area. Phonons have ...

In order to predict the performance of a riser sleeve using simulation software, the thermophysical properties of that sleeve must be known. Current literature gives little to no information about these properties. Some manufacturers have given these properties as an optional module for simulation software without revealing their actual values. The accuracy of these “black box” properties is un...