In gas compression, most of the input energy to the compressor is lost as heat. The compressed gas must be cooled to make it suitable for its intended use, which offers a valuable opportunity for heat recovery.
Gas compression: high fraction of energy added must be rejected by cooling.
Heat must be removed to maintain compressor tolerances and clearances, and the compressed air cooled to make it suitable for its intended use.
The most common compressor in manufacturing plants: lubricant-injected, rotary screw - 80% of heat is rejected in the lubricant cooler, the rest in the aftercooler.
Two-stage lubricant-free rotary screw compressor: almost all the rejected heat is divided evenly between the aftercooler and intercooler. The air is clean.
Airec focus on two- or multi-stage oil-free compressors. This is because nearly all the heat energy is transferred to the gas, and the gas is clean, reducing clogging and fouling inside the heat exchanger.