The natural convection electric heating element directly heats the indoor air and gradually warms the whole room by virtue of gravity circulation. Its structure is simple and cheap, but the heating speed is slow, and it takes a long time for the temperature to stabilize; in terms of vertical temperature distribution, natural Convection electric heaters have vertical temperature stratification, with high top and low bottom; in terms of horizontal temperature distribution, natural convection electric heaters have uniform temperature distribution and small temperature difference; after reaching a steady state, natural convection electric heaters have good temperature stability.

In the forced convection type, an electric fan is added behind the electric heating element. When the electric heating element is energized and heats up, the electric fan runs at the same time, and the forced cold air passes through the electric heating element to be heated. Everywhere in the room. The electric heating element of this kind of heater has a relatively large power, usually above 2kW, and the air supply volume of the electric fan is between 3 and 6m/min.

The forced convection heater heats up quickly, and the indoor temperature can reach a stable state in a short period of time; in terms of vertical temperature distribution, the vertical temperature distribution of the forced convection heater has a great relationship with the heater position. The closer the distance, the higher the temperature. high, and vice versa. In terms of temperature distribution in the horizontal direction, the forced convection electric heater has a large temperature difference, and the temperature is also related to the position of the heater. After reaching a steady state, the temperature of the forced convection electric heater fluctuates greatly, and there is a feeling of blowing