Power consumption of air compressor
According to the normal situation to estimate, with a 1.8 kW compressor compressor working time * * per hour total working time (compressor total working time is difficult, because the workload of different sizes, the compressor start time length is different, the number of starts per hour is different) to go through several observation to start an average.
For example, after repeated observation, the compressor runs on an average of 40 minutes per hour. That is, 0.66 hours, the calculation formula is 1.8 kW x 1 hours * 0.66=1.188 kWh (degree).
Hello, there are some parts of your conversation that I don't quite understand. I guess, this air compressor should be three-phase asynchronous motors, 18A current, three-phase asynchronous motor line current is about 2 times of the rated power, the motor power is about 9KW 9KW, the motor is not only 7.5KW or 11KW, Y series. You say the theoretical power consumption is 18 degrees per hour. I think it is a 18.5KW motor? The actual power consumption of 13 degrees, less than in theory, there are two reasons: first, when the motor does not run full load; two, when the pressure is reached, the motor will stop running.I think you can't meet the requirement if you buy a 11KW air compressor. You buy a new air compressor power is smaller than that of the original, even if the continuous operation, power consumption of 11 degrees per hour, it can save electricity, but this will cause insufficient air supply and air compressor, the continuous operation of the air compressor is not good.
