CHP for greenhouse applications
Posted on 18 March 2015
The energy created by gas engine cogeneration systems in greenhouses can be used in various ways. The electricity can provide the power for artificial lighting and/or be fed into the public grid. And while the heat can efficiently meet the greenhouse‘s requirements, the CO2 from the engine exhaust gas can help fertilize the plants.
That is because the exhaust from gas engines burning natural gas contains approximately 0.2 kg of CO2 per kWh of energy input. After the purification of the exhaust gas with special catalytic converters (SCR and oxidation catalytic converters), it is cooled down by a heat exchanger to approximately 55°C and supplied to the greenhouse for CO2 enrichment. A device that constantly measures the exhaust gas levels helps ensure the vegetation’s safety.