Parameters of fixed-frequency air cooling and variable-frequency air cooling
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I’d like to ask the experts: which one is faster in speed, variable-frequency air cooling or fixed-frequency air cooling, once it reaches 100%? Which is more energy-efficient? Why are some production units equipped with both fixed-frequency air cooling and variable-frequency air cooling, and what are the advantages of this? Is it appropriate to use variable-frequency air cooling for everything?
When the motor efficiency is the same, achieving 100% frequency conversion results in higher energy consumption compared to a motor operating at the standard frequency, as inverters also have their own power consumption. Variable-frequency air cooling is used to complement the cooling performance of fixed-frequency air cooling; they can be used in combination. For example, when one fixed-frequency air cooler is used, the cooling effect is insufficient, while using two fixed-frequency air coolers results in excessively low temperatures. In such cases, it is necessary to use one fixed-frequency and one variable-frequency air cooler together. As in the case of the 2 fixed-frequency and 2 variable-frequency air coolers used before high-temperature processing, the ultimate goal is to control the temperature at high levels, while also taking energy savings into consideration. If all are variable-frequency air coolers, then some of the air coolers will operate at 100% capacity all the time, which defeats the purpose of variable frequency control and also increases the investment in equipment
I remember the price of one inverter to be 370,000; I’m not sure if it was 3.7 million. Anyway, I was a bit shocked when I asked about the price