This particular energy recover system consisted of energy recovery from a variable speed driven water cooled compressor via a heat exchanger on the compressor cooling circuit. The compressor cooling circuit operates at circa. 85°C and can produce hot water and up to 80% of the compressors total capacity.
By reclaiming the waste heat from a gas compressor BDI used this energy to heat the water supply used in offices for showers, taps and radiators etc. in order to reduce energy consumption of boilers or replace them entirely.
This particular operation utilises the hot water produced on a separate closed circuit water system to provide a heat interface unit with hot water which used an integral heat exchanger and pump to replace the customer’s boilers. This process reduced the sites use of gas boilers for heating.
The installation of this equipment saved the user circa £20K per annum with an equipment payback of only 9 months.