Bayer Pharma AG

Solution and Implementation

• The Berlin technical team of Bayer AG (Pharmaceuticals Division) worked with ÖKOTEC to continuously evaluate four AHUs of the laboratory building S149 to control set points depending on efficiency criteria
• Measurements of steam usage, cooling water, heating water and electric power were set up along with a control interface
• The parameters of the AHUs are adjusted to operate efficiently during air conditioning, thus creating minimal energy costs and lower CO2 emissions
• Efficient plant settings are identified and recalled by the EnEffReg® algorithms for the appropriate operating times
• ÖKOTEC implemented automatic control systems to select the best performing algorithms

• Transparency of energy consumption: For each AHU, the humidification components, heat recovery, heating and cooling coils are checked using energy consumption monitoring and analysis
• Transparency of savings: Compared to the baseline of the reference year, 18 % of energy costs are saved annually
• Savings during the implementation phase: Steam 860 MWh per year, 38 %; Cooling 128 MWh per year, 29 %; Heat 79 MWh per year, 11 %;
• Sustainability: The annual amount of CO2 saved thereby was calculated as 246 tCO2 equivalents, 27 %/a