Hot air or high-temperature compressed air can be used for air cooling, and no cooler is needed to heat the medium;

Oil or high-temperature compressed air can be used for water cooling, and no cooler is needed to heat the medium;

At present, the transformation technology of oil engine is mature and widely developed. Some oil machine manufacturers do it, and some compressor manufacturers do not agree with the oil machine heat recovery transformation. There is no mature technology for centrifuges at present.

Compared with other manufacturers, Ingersoll Rand, CommScope and Shouli are better and more sincere. You must keep your eyes open to see if there are any successful cases and avoid treating you as an experiment.