Utilisation of Steam and Heat

Summary

Approximately 4,500 households in Kalundborg receive district heat from Asnæs Power Station which replaced approximately 3,500 small oil-fired units. Asnæs Power Station also supplies about 15% of the process steam to the Statoil oil refinery for various uses (e.g. heating oil tanks, pipelines). Novozymes (pharmaceutical company) and Novo Nordisk (enzyme producer) use steam from the power station for the heating and sterilisation of their processing plants. The combination of these heat and power symbiotic processes result in a 30% improvement of fuel utilisation compared to a separate production of heat and power. Some of the cooling water from Asnæs Power Station is used by a fish farm producing 200 tonnes of trout and salmon on a yearly basis. The fish have better growth conditions in the heated water. (Kalundborg Centre for Industrial Symbiosis 2004).

Industry

Industry Sector	Specific Industry
energy utility	Asnæs power station
government	Kalundborg Municipality
petroleum	Statoil oil refinery
pharmaceutical	Novo Nordisk
enzyme production	Novozymes
fishing	fish farm

Region

Kalundborg, Denmark

Applied Technologies

• not known

Triple Bottom Line Aspects (direct at operational level)

Economic	increased company revenues through efficient energy use increased sales of trout and salmon from fish farm
Environment	30% improvement in fuel utilisation replaced 3,500 small oil-fired units reduced greenhouse gas emissions
Social	district heating of approximately 4,500 households in the municipality employment

Additional Comments

None.

References

• Kalundborg Centre for Industrial Symbiosis (2004) "Industrial Symbiosis", Retrieved from: http://www.symbiosis.dk/

Last Update

6 August 2006