Jyväskylä Energy Group - Keltinmäki microturbine introduction

www.jyvaskylanenergia.fi

Oskari Jylhä

17.6.2016

2 Jyväskylän Energia -yhtiöt | www.jyvaskylanenergia.fi



• Built in 2015

• Runs on biogas produced by Mustankorkea Oy

• Combined heat and power

• Automatic and unmanned production

• Capstone microturbines for electricity combined with collection system for heat

• Low emissions and green energy


Gas:500 mbar30-75 % (methane)

CompressorsActivated carbonfilters Turbines

200kW

200kW

200kW

District heatsystem Exhaust gas

water in

Gas:5700 mbar

water out


• Mustankorkea delivers biogas with 1,9km transfer pipe straight in to our facility

• Power plant runs on gas which has 30 – 75% methane

• Mustankorkea biogas has good qualities likehigh methane percentage and low siloxaneconcentration


• To burn the gas, it must be pressurized. Compressorspressurize gas up to 5,7 bar

• Double compressors are used for reliability and highusability

• One compressor is the master and the other is in slave mode. Automatic change is done if onecompressor fails or needs maintenance and thusenergy production can continue without any downtime


• Turbines need pure gas so activated carbon is being used to filter the impurities off

• Gas flows through activated carbon and harmful impuritieslike siloxanes are removed

• Tanks are doubled so that activated carbon can be changedwhile the turbines are running. This also creates high usabilityand cost effectiveness


• The gas is burned in Capstone turbine which rotates the generator and creates energy

• Turbines are similar to airplane turboshaft jet engines

• Turbines rotate at high speeds: 20 000- 60 000 revolutions per minute

• Power is adjusted by changing the amount of revolutions

• One unit produces 200kW

• https://www.youtube.com/watch?v=koXgr2Q1zyM

https://www.youtube.com/watch?v=koXgr2Q1zyM


• Around 1 MW of energy is taken to heat up the district heating network of Jyväskylä city

• Equivalent energy production of about 470 households’ annual energyconsumption

• Water is heated and pumped to customers and recirculated back to the powerplant to heat it up again

• Energy is extracted in big heat exchangers


• Biogas is an enviromentally friendly fuel

• Exhaust gas is invisible and very pure compared to conventional methods


• [email protected]



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Jyväskylä Energy Group - Keltinmäki microturbine introduction