ENER-G launches ultra-low NOx CHP range

ENER-G has launched a new range of ‘ultra-low’ NOx Combined Heat and Power (CHP) systems.

The company says the new range is achieving emissions levels of  less than 50 mg/Nm³ @ 5% O², sustained across the lifetime of the emissions system.

“This is almost half of the most stringent emissions limit set by both BREEAM and the new Greater London Authority (GLA) Sustainable Design and Construction guidelines. It is five times lower than the more widely accepted limit of 250mg/Nm³ @ 5% O²,” added ENER-G.

For CHP systems with an electrical output above 230 kWe, ENER-G can incorporate external NOx abatement technology, such as selective catalytic reduction (SCR). This can bring the NOx emissions level down as low as 10 mg/Nm³, when necessary.

Ian Hopkins, director of ENER-G Cogen International, said: “Our spark-ignition CHP gas engines, based on naturally aspirated technology with an inbuilt catalyst, were already exceptionally green and clean. We have now further reduced NOx emissions to a level that is far below even the most stringent limit of 95 mg/Nm³ @ 5% O². We believe that we’re the only company in the UK that can sustain such a low level throughout the lifetime of the catalyst and without the extra cost and bulk of using external NOx abatement equipment.

“As the level of emissions testing rises, it is important to make sure that CHP equipment is fit for purpose for its lifetime, not just at the planning and commissioning stages. Emissions performance must be sustained to comply with strict standards. It can be costly, as well as damaging to reputation, if equipment has to be turned off or replaced because of NOx emissions failings.”