Microsoft Word 2012, Källén, M.,-Energy Efficiency Opportunities within the Heat Treatment Industry

7  Conclusions 

The energy audit and the investigation of energy efficiency opportunities at Bodycote 

Värmebehandling AB in Angered can be summarised with the following conclusions: 

•  The plant consumed 9 590 MWh/year of electricity and 120 MWh/year of district 

heating at the start of the project. 

•  68% of the energy was consumed in the process and 32% of the energy was consumed 

in the support processes. 

•  The largest part of the energy consumption in the process is consumed in the main 

furnaces. 

•  The electricity consumption could be decreased with 753 MWh/year by energy 

housekeeping measures. 

•  The electricity consumption could be further decreased with 418 MWh/year and the 

district heating demand could be removed by energy saving investment measures. 

•  The proposed energy housekeeping measures and energy saving investment measures 

could together reduce the energy cost with approximately 1.2 MSEK7year and reduce 

the carbon dioxide emissions with approximately 740 tonCO

2

/year. 

•  If all proposed measures were implemented, the combined investments would have a 

payback time of three years and a net present value of almost 19 MSEK over a time 

frame of ten years and with current energy prices. 

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