Energy efficiency in industry and production

Reducing CO2 emissions through energy recovery

Practical examples of energy recovery at Bosch
The use of energy is generally lossy. Often, the by far largest portion of utilised the energy is in the end converted into heat. Production systems must therefore be actively cooled, which, of course, requires additional energy. By recovering at least a portion of the energy losses, we enable multiple usage and reduce the demand of primary energy.

Red-hot exhaust pipe on an engine test rig

Endurance test rings for endurance test rigs for pumps and injectors, testing fuel is fed into a loop. It is heated prior to injection and then cooled. By retrofitting internal heat exchangers throughout the world, we have significantly reduced the need for heating and cooling.

The Feuerbach (Germany) location has made annual savings of 3,900 MWh of energy.

Engine test rigs
For engine test rigs, injection systems are tested under real conditions. A diesel engine is operated under a load which is simulated by a brake. In older test rigs, the braking energy is converted into heat. By retrofitting regenerative brakes with energy recovery to the electricity network, a significant portion of the electricity demand can be covered at the site – as is the case at our Linz (Austria) location.
The Linz (Austria) location has made annual savings of 880 MWh of energy.

Air compressors
Compressed air is produced in compressors with very low efficiency that is usually less than 10%. This can be significantly increased if the waste heat is used for tasks such as producing hot water or feeding into the heating network. We therefore retrofit our compressors with heat exchangers.
The Jihlava (Czech Republic) location has had annual savings of 2,275 MWh of energy.

Ventilation systems
Production facilities often give off significant amounts of indoor heat. Nevertheless, fresh air must often be preheated for tasks such as humidification or dehumidification procedures. Using heat exchangers, we can withdraw some heat from the discharged air.
The Bursa (Turkey) location has made annual savings of 4,600 MWh of energy.

contact details/company:
Robert Bosch GmbH
Diesel Systems
DS/MFT
Wernerstr. 51
70469 Stuttgart-Feuerbach
www.bosch-diesel.de


contact person:
Steffen Behnke
+49 (0) 711 811-30379
steffen.behnke@de.bosch.com