TW-CHM-A Good Conductor Thermal Conductivity Measurement Tester Introduction: Thermal conductivity is a physical quantity that characterizes the thermal conductivity of a substance. Heat conduction is one of the three basic forms of heat exchange (heat conduction, convection and radiation). It is a subject in engineering thermophysics, materials science, solid physics, energy and environmental protection. The heat conduction mechanism of a material depends largely on its microstructure. The transfer of heat depends on the vibration of atoms and molecules around the equilibrium position and the migration of free electrons, and plays a dominant role in the flow of electrons in metals, In insulators and most semiconductors, lattice vibration plays a leading role. In scientific experiments and engineering design, the thermal conductivity of all materials needs to be accurately measured by experimental methods. This instrument adopts the stable flow method to measure the thermal conductivity of good conductor (H62 copper). The measuring principle is traditional, but the measuring method is novel. TW-CHM-A Good Conductor Thermal Conductivity Measurement Tester has clear experimental process, convenient adjustment, stable and reliable data, and can be used in basic physics experiments and design comprehensive experiments in colleges and technical secondary schools. characteristic: 1. The hot end is heated by electric coil, and the heating temperature of the hot end is adjustable; 2. Platinum resistor is used to measure the temperature at the hot end, and PID closed loop controls the heating temperature; 3. A simple and reliable liquid level controller is adopted, which can well control the flow rate of water at the cooling end; 4. Four high-precision integrated temperature sensors are adopted. The LCD module can display the temperature of four temperature sensors at the same time. It is convenient to record the temperature value; Technical parameters: Electric heater: AC 220V, power 120W Test sample: H62 copper, the nominal value of thermal coefficient is about 109 W • m-1 • K-1 Temperature control device: temperature control range: room temperature to 100 ℃, display accuracy: 0.1 ℃ Integrated temperature sensor: temperature measurement range 0-90 ℃, display accuracy 0.1 ℃
TW-CHM-A Good Conductor Thermal Conductivity Measurement Tester has clear experimental process, convenient adjustment, stable and reliable data, and can be used in basic physics experiments and design comprehensive experiments in colleges and technical secondary schools.
