Single-channel airflow monitors developed for screening of sleep-disordered breathing (SDB) have conflicting results for accuracy. It was hypothesised that the analytical algorithm is crucial for the performance and the present authors tried to develop a novel computer algorithm. A total of 399 polysomnography (PSG) records were employed, including a thermal sensor signal. The first 100 records...

A CFD model of VVER-440 fuel assembly heads was developed based on the technical documentation of a full-scale test facility built in the Kurchatov Institute, Moscow. Steady-state and transient calculations were performed to validate the model with a measurement set and investigate the effects of the spatial discretization, choosing of different turbulence models and use of different inlet boun...

Results from mathematical models and plant experiments are combined to quantify the effect of transverse depressions and oscillation marks on heat transfer in the continuous casting mold. A heat transfer model has been developed to calculate transient heat conduction within the solidifying steel, coupled with the steady-state heat conduction with the continuous casting mold wall. The model feat...

Heat transfer coefficient in the entrance region of water flowing through micro-tubes with diameters of 962 μm and 123 μm was investigated in this study. Two temperature measurement methods, thermocouple and liquid crystal thermography (LCT), were used to measure the tube surface temperature. The experimental data showed that the Nu in the entrance region can be predicted well by conventional c...

Several researches dealing with the single-phase forced convection heat transfer inside microchannels have been published in the past decades. The performance of liquid flow has been proved that agrees with the conventional correlations very well. However, owing to the low heat transfer coefficient of gaseous flow, it is more difficult to eliminate the effects of thermal shunt and heat loss tha...

Infrared imaging has been used to visualize superficial temperatures in industrial employers standing and working in an indoor environment at 22°C. Temperature distributions and changes have been recorded digitally and analyzed. Mean skin temperatures determined by this method have been compared with superficial temperatures obtained with a probe thermocouple. During working hours, surface temp...