Accelerating the measurement of Multi-layered Heat Transition by Electric Capacitor in V-R-C Circuit .

• Main Authors: YU , WEI - LI, 游崴理
• Other Authors: Je-Ee Ho
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/63670489804477990017

碩士 === 國立宜蘭大學 === 機械與機電工程學系碩士班 === 100 === Base on the theoretic analysis of thermal network, a fast way, dealing with the performance of capacitor in V-R-C circuit, is first proposed to speed up the measurement or simulation of multi-layered heat transition. In which, the exponential surficial temperature, at outer surface exposed to heat flux, is developed and which corresponds to an equivalent voltage imposed by arduino atmega 8 chips in circuit. After transferring the material thermal property coupling with geometric scale of slab into equivalent electric components, time –dependent temperature distribution of the composite medium, according to Ohm’s law, could be accurately approximated and the period going through experimental process will be significantly reduced by adjusting the gain of capacitor. While compared to the analytic solutions, results made from V-R-C model show an excellent agreement and the duration, in practical measuring process, about 400 min might be quickly shorten to 1.5 min~8 min accessed in corresponding circuit i.e., only 1/50~1/400 of experimental time is required in V-R-C model to complete the similar analysis by performing the capacitor 4μf~20μf in circuit. Keywords: V-R-C circuit , Thermal Network , Thermal Capacitor , Thermal Resistor