Systems for air compressors
Use the excess heat to your advantage
It is a thermodynamic fact that around 95% of this energy is converted to heat and is wasted to the atmosphere through heat dissipated by the motor and cooling system, with the majority lost via the oil cooler. By re-directing the hot oil to a high efficiency oil to water heat exchanger, the heat can be transferred to water, raising the temperature to a required level for a multitude of applications.
Nice to have... or must have?
The heat generated during compression is paid for as part of the process, then paid for again during removal by way of cooling fans. Instead of simply removing the heat, it can be used to generate hot water, heating systems and application processes in other areas of the installation.
CompAir’s innovative heat recovery systems delivers the opportunity to save money, energy and help to protect the environment.
The heat recovery principal
The basic principle lies in the transferral of heat into a medium and then transporting it to where it can be utilised. The hot cooling air of a closed air cooled compressor can be diverted to an enclosed area via ducting for heating.
If water was to be heated, the oil in the oil cooler is chosen as the transfer medium, this will provide approximately 72% of the overall power consumption for water heating.
- Significant cost savings
- Lower CO2 emissions
- Factory fitted integrated system
- Retrofit kits for installed systems including all pipework and fittings
- Low investment costs
The data is based on an inlet temperature of 25 °C.
|Water flow rate litre/hr||531||235||648||287||760||335||695||278||786||314||854||340||1218||486||1518||607||1770||708|
|Outlet temperature °C||45||70||45||70||45||70||45||75||45||75||45||75||45||75||45||75||45||75|
|Energy saving kW||12.3||12.3||15.0||15.0||17.5||17.5||16.1||16.1||18.2||18.2||19.7||19.7||28.2||28.2||35.2||35.2||41.0||41.0|
|Water flow rate litre/hr||2064||822||2796||1116||3499||1410||4266||1704||4782||1914||5230||2108||6515||2626||8269||3333|
|Outlet temperature °C||45||75||45||75||45||75||45||75||45||75||45||75||45||75||45||75|
|Energy saving kW||47.8||47.8||64.8||64.8||80.6||80.6||98.5||98.5||110.8||110.8||120.5||120.5||150.1||150.1||190.5||190.5|
Further ranges and models are available upon request.
The above table is dependent on site conditions and shows examples of kW savings at stated water temperature rises. CompAir's energy recovery system offers savings on a wide range of inlet and outlet temperatures. For alternative temperatures please contact your local CompAir representative.