MicroCHP

Micro Gas Turbine Operation with Biomass Producer Gas
L.P.L.M. Rabou, J.M. Grift, R.E. Conradie, S. Fransen , F. Verhoeff, ECN Nethelrlands, August 2007

ABSTRACT: We report the performance of a micro gas turbine on biomass producer gas and mixtures of biomass producer gas with natural gas. The micro gas turbine delivers full power on gas mixtures with a heating value of at least 15 MJ/Nm3. For gas of lower heating value, the maximum fuel gas flow limits the attainable power. The lower limit for stable operation is about 8 MJ/Nm3. The gross efficiency of the micro gas turbine depends on output power but not on the gas heating value, within our measurement accuracy. Above 70% of full power, emissions of CO and NO are 40 and 10 times lower than those of a gas engine of similar size. At part load below 70% of full power, the micro gas turbine burner switches to a different operating mode which produces higher CO and NO levels, but still significantly below those of a gas engine.

Keywords: biomass conversion, emissions, gas turbines

Contribution to the 15th European Biomass Conference, Berlin, May 2007

Commercializing New Technology: EERC Microgasification Local Energy/Local Opportunities, CERTs

Information sheet: Combined heat and Power
Biomass Energy Centre, DEFRA, UK, Version 2.0 April 20, 2007 Biomass.Centre@forestry.gsi.gov.uk

Excerpt:

Combined heat and power (CHP), or co-generation, is the simultaneous generation of usable heat and electricity.
Conventional power plants usually dissipate the heat generation using cooling towers. With CHP it is used for domestic or industrial space heating or for process heat. Tri-generation also includes cooling using an absorption chiller.