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This paper gives a method of ultrasonic heat meter design. Heat is calculated by measuring the flow and temperature of the water in pipe. Firstly, principle of ultrasonic is adopted to measure the flow of water in this project. Then, water temperature is measured by the temperature sensor in pairs of inlet and outlet. Finally, heat released through the heat exchange system is calculated by MCU. Inlet...
This research mainly focuses on the household bean sprouts machines, putting forward a kind of intelligent photoelectric household bean sprouts machine, which is made up of the base, cover, cultivating cylinder, cultivating dish, pressure tray, pressure sensor, intelligent controller and control panel, etc. Considering that different beans need different illumination levels, this design uses the liquid...
Neutral beam injection (NBI) has been a main heating method except the Ohmic heating in Tokamaks. Due to the high current and power, in order to ensure the safety of NBI, the temperature of all of the components that can be heated should be monitored. As the high voltage is high up to 80kV, and the neutral beam injector work in the complex electromagnet environment of EAST, these bring a big interference...
The enthalpy difference laboratory is an experimental device for measuring refrigerating and heating capacity of Air conditioner. However, the temperature system of enthalpy difference laboratory has the characteristics of nonlinearity, hysteretic nature and time variation. Therefore, it is difficult for general control method to meet the control requirements of enthalpy difference laboratory. In...
Ultrasonic thermometry is a kind of emerging acoustic pyrometry technology, and it can break through the limitation of various electromagnetic environment, where the traditional temperature measurement methods have failed to operate satisfactorily. The temperature on the current path can be retrieved by the speed of the ultrasonic wave. When the measurement path is fixed, the key issue of ultrasonic...
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