METHOD FOR RECOVERING ENERGY WHEN COMMPRESSING GAS BY A COMPRESSOR

摘要

Method for recovering energy when compressing a gas using a compressor system with two or more compression stages, with each stage having a compressor element. Downstream from at least two compressor elements there is a heat exchanger having a primary and a secondary part. The coolant is guided successively in series through the secondary part of at least two heat exchangers, and the guiding sequence is chosen such that the temperature at the inlet of the primary part of at least one subsequent heat exchanger is higher than or equal to the temperature at the inlet of the primary part of a preceding heat exchanger, relative to the direction of flow of the coolant. At least one heat exchanger is provided with a tertiary part for a coolant.