空气电加热器应用：
Air electric heater application:
空气加热器的功率是根据风量和温升计算确定的，风量、温升已满足需要的前提下，不宜采用过大的风量、过大的温升，因过大的风量、温升，直接导致加热器的功率过大，增加能耗。过大的风量、温升是没有必要的。要综合考虑，合理设计，确定适当的参数。在使用空气加热器时，仅对电加热器出口的管道进行保温，而对加热器本身的表面不作任何保温处理。对比数据表明，在空气加热器表面上增加保温层可减少能耗5%~10%，长期运行，节省的能耗是非常可观的，应在对管道加装保温层的同时，对空气加热器加装保温层。
The power of air heater is determined according to the calculation of air volume and temperature rise. On the premise that the air volume and temperature rise meet the needs, it is not suitable to use excessive air volume and temperature rise. Because of the excessive air volume and temperature rise, the power of heater is too large and energy consumption is increased. There is no need for excessive air volume and temperature rise. It is necessary to consider comprehensively, design reasonably and determine appropriate parameters. When using the air heater, only the pipe at the outlet of the electric heater is insulated, and the surface of the heater itself is not insulated. The comparison data shows that adding insulation layer on the surface of air heater can reduce energy consumption by 5% ~ 10%, which is very considerable in long-term operation. It is necessary to install insulation layer on the air heater while installing insulation layer on the pipeline.