Influencing factors:
2. If other conditions remain unchanged, changing the surface load will cause the wall temperature of the electric heating element in the air heater to change linearly. If the surface load increases, the wall temperature of the electric heating element will increase, which will reduce the service life of the electric heating element in the air heater. However, if the surface load is too small, the wall temperature is too low, and the efficiency of the air heater heat exchanger decreases. Therefore, the selection of the surface load of the electric heating element in the air heater is relatively important.
<p style="margin: 0px; padding: 0px; border: 0px; color: rgb(102, 102, 102); font-family: " microsoft="" yahei",="" arial,="" "microsoft="" 宋体,="" sans-serif;="" line-height:="" 2em;="" text-indent:="" 2em;"=""> 3. When the final air temperature T2 in the air heater increases, due to the increase in air viscosity, the gas Reynolds number decreases, which reduces the convective heat transfer intensity. The surface temperature of the electric heating element in the air heater rises simultaneously, and the infrared carbon-sulfur analyzer increases heat dissipation loss, thereby reducing the efficiency of the heat exchanger. When T2 increases too much, the surface temperature of the electric heating element will also rise significantly, making it unbearable for ordinary electric heating elements. Therefore, the increase in T2 is usually limited by the heat resistance of the electric heating element material in the air heater.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
