The enhancement of the thermal performance of Vacuum Tube Solar Collectors (VTSC) was studied by using alumina nanofluid as working fluid. VTSC is a simple and commonly utilized type of collector. This study established the heat transfer experimental model of all glass VTSCs used in a forced-circulation solar water heating system using alumina nanofluid as base fluid. Al2O3 (with an average par...

Anode activity in vacuum arc plays a very important role in both characteristics of vacuum arc and the interruption capacity of vacuum interrupters. In this paper, the transient thermal processes of anode in vacuum arc in a half of arc current cycle with frequency of 50 Hz are simulated by finite element analysis software, ANSYS. Some important phenomena of anode, e.g., the melt and solidificat...

The thermal instability of the giant graviton is investigated within the BMN matrix model. We calculate the one-loop thermal correction of the quantum fluctuation around the trivial vacuum and giant graviton respectively. From the exact formula of the free energy we see that at low temperature the giant graviton is unstable and will dissolve into vacuum fluctuation. However, at sufficient high ...

Using data taken during WFC3's Thermal Vacuum 2 (TV2) testing campaign, we have characterized the non-linearity of the IR-1 detector. Cubic polynomials were used to fit the signal and produce correction coefficients to remove the non-linearity effects. We have also created a mask that identifies pixels with non-nominal behavior. This population of pixels represents 4.1% of the total number of a...

The purpose of this study is to perform an analysis of the process of experimental testing of the thermal control system of the “AIST” small satellite, using the computer simulation of the satellite’s flight in the “TERM” software package. Based on the telemetry data, obtained by the Samara University satellite ground control center, actualized parameters of the ground testing process were prop...

Temperature measurement and control are two difficult problems in the rapid thermal processing (RTP) system. For many applications such as rapid thermal processing chemical vapor deposition (RTCVD) [1] and rapid thermal oxidation (RTO) [2], large changes in wafer emissivity can occur during film growing, leading to erroneous temperature measurements with a single wavelength pyrometer. The error...