Compared with the electric water heater, the air energy water heater doesn't save electricity
That is to say, the thermal efficiency changed from 4 to 2, and to 5 degrees below zero, it was the same as that of an electric water heater, plus the power consumption of defrosting, and the overall thermal efficiency was not as good as that of an electric water heater at that time.No matter what is energy-saving or not, it is under certain conditions.
The thermal efficiency of heat pump water heater electric water heater is better than 4 times higher, but we must remember that the energy efficiency ratio of the heat pump water heater is with the variation of temperature, heating machine nominal is generally measured at 7 degrees temperature, when the temperature reached 0 degrees, the heating up left half,
Heat pump water heater is through the acquisition of large amounts of free heat energy in the air, energy consumption is only used to transport air energy energy, so the thermal efficiency of up to 380%-600%
