Cooling and heating effect of central air conditioner
has an intimate relation with environment temperature. When outdoor
temperature is in a big difference with standard operation temperature.(7
degree outdoor), there is a lower efficiency of central air conditioner,
and a big difference over the temperature it provided and the required
temperature of the room.
The settlement of a subsidiary electric heater preheats the water
in air conditioner, raising its temperature, which ensure start-up
and operation of air conditioner and raise energy supply efficiency
of air conditioner. |