Wiesner Hager: Material and Energy Balance

Austrian office furniture manufacturer Wiesner Hager is looking to increase efficiency in their production system, and to make more sustainable products. To this end they have being doing Life Cycle Assessments (LCAs) and have published Environmental Product Declarations (EPDs).

On their website they feature two Sankey diagrams.

The first is the corporate material balance. Flows are in tons (probably for one year, although not indicated). Raw materials and water constitute the largest inputs, while on the output side vapour and sewage dominate, next to the actual products.

The other is the energy balance. Flows are in MWh. The energy carriers (fuels) depcited also show up (as mass) in the above material inventory. Looking at the steam input, it is not clear what fuel is used to run the boiler.