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Greenhouse Power & CO2 Fertilisation
GreenhousePower & CO2Fertilisation
Greenhouse Cogeneration / CHP
Gas engines are highly efficient atproviding the stimulus for the growthof plants, whilst in parallel providinga flexible supply of electrical power.Heat, light and carbon dioxide (CO2)all promote plant growth. Gasengines provide electrical power atthe alternator and when in acogeneration configuration can alsorecover useful heat. Carbon dioxideis released in the exhaust gases ofthe engine as a by-product of thecombustion of the fuel gas. Electricalpower can be used to provide energyfor lighting or can be exported to thegrid, heat can be stored as hot waterfor use when needed and finally theCO2 can be scrubbed and used topromote plant growth.
Benefits
— Efficiency levels up to 95%,therefore high contribution toresource conservation andmaximisation of profits
— Provides power to grid at timesof maximum demand hencereceiving highest power saleprices
— Time-independent supply of CO2
and heat through heat storage— High quality CO2
Fuel gasCatalytic converter
Blower
Heat exchanger
Buffer
Heat consumer(Greenhouse)
Lighting
Exhaust gas
Urea tank
Electricalenergy
CO2
Greenhouse Cogeneration Schematic
GreenhouseCogeneration /Combined Heatand Power (CHP)Clarke Energy is a multinational specialist in distributedpower generation technology. Our scope ranges from thesupply of a gas or diesel fuelled power generation engine,through to the turnkey installation of a multi-engine powerplant. Clarke Energy is an authorised distributor andservice provider for GE’s reciprocating gas engines. The business has a strong focus on aftersales support;developing in-country resources to service and maintainour facilities, along with original equipment manufacturerapproved spare parts. Our aim is to provide high qualityproducts and installations supported by a reliable,accountable and localised after-sales service. Integrity is acore company value and Clarke Energy operates to thehighest international standards of compliance.
Benefits of working with Clarke Energy— Quality products, balance of plant and installations
products mean high technical and environmentalperformance hence maximum returns for our customers.
— Our installations are backed up by the highest levels oflocalised aftersales support, meaning maximumreliability of the power generation assets we supply.
— Extensive engineering experience across a range ofgases and applications, meaning tailored, optimalpower generation solutions for our customers
Serres le Château, France, 1x JMS620
Carbon Dioxide & Plant Growth
Plants grow by converting CO2 tocarbon through photosynthesis. Airgenerally contains approximately350 ppm of CO2. Optimal CO2 levelsdepend on the type of plant andgenerally lie above 700 ppm. Withincreased artificial lighting, aspresent in greenhouses, plantsabsorb even more CO2. If thegreenhouse atmosphere is enrichedwith CO2, the temperature kept on aconstant level and sufficient lighting,provided plant growth andconsequently the harvest yield canbe increased significantly.
When burning natural gas in gasengines, approximately 0.2kg CO2 isproduced per kWh of energy input.This CO2 is present in the exhaust ofgas engines in a concentrationapproximately 5-6% by volume.
Energy Usage
The energy created by gas enginecogeneration / combined heat andpower systems in greenhouses canbe used in various ways. Theelectricity can provide the power forthe artificial lighting and/or be fedinto the electricity grid. The heatefficiently meets the greenhouse’srequirements. In addition, theclimate-relevant CO2 of the engineexhaust gas serves as a fertiliser forthe plants.
Exhaust Purification
After the purification of the exhaustgas with special catalytic converters(SCR and oxidation catalyticconverters), the exhaust gas iscooled down by a heat exchanger toapproximately 55°C and supplied tothe greenhouse for CO2 enrichment.A measurement device thatconstantly monitors the exhaust gaslevels ensures maximum safety forvegetation.
Key Figures
Efficient operation is possible withapproximately 1hectare (ha = 2.47acres) or larger greenhouse areas:— CO2 fertilisation is suitable for
nearly all plant types— CO2 fertilisation with
simultaneous heat supply:dimensioning for 0.5 MWel/ha
— CO2 fertilisation withsimultaneous heat supply andillumination dimensioning for0.35 MWel/ha
— Illumination suitable forvegetables (e.g. tomatoes orpeppers) and for flowers (e.g.chrysanthemums or roses)
— The decisive factors foreconomical plant operation arethe high electrical efficiency,combined with the usage of heatand CO2 fertilisation
Our Competence
Clarke Energy has installednumerous greenhouse power plantsin the UK and France. This coupledwith our comprehensive experienceof natural gas generation means weare ideally placed to support yourgas generation project.
JMS624 in Dutch greenhouse growing roses
If you would like to discuss yourgreenhouse cogeneration project with youin more depth, please contact your localClarke Energy office.
Algeria
Bureau de Liaison AlgérieCité Sellier BT B23ème Etage – HydraAlgerTel/Fax: +213 2160 90 [email protected]
Australia
Building12-4 Stirling StreetThebartonSouth Australia 5031AdelaideAustraliaTel. +61(0)8 8290 2100Fax. +61(0)8 8443 [email protected]
Bangladesh
Laila Tower, 12th Floor8 Gulshan AvenueGulshan-1Dhaka-1212BangladeshTel. +88–02–9841638
98573559898837
Fax. +88–02–[email protected]
Cameroon
Immeuble Victoria, 2eme ét,316, Rue Victoria Bonanjo-DoualaBP15198 DoualaCameroonTel. +237 677 [email protected]
France
Z. A. de la MalleRD6Bouc Bel Air 13320FranceTél. +33 (0)4 42907575Fax. +33 (0)4 42 90 [email protected]
India
Shivkiran, Plot No.160CTS No. 632Lane No.4Dahanukar ColonyKothrudPune 411038IndiaTel. +9120 30241777Fax. +9120 [email protected]
Ireland
Unit 7Newtown Business ParkNewtownmountkennedyCounty WicklowIrelandTel. +353 (0)12810010Fax. +353 (0)[email protected]
New Zealand
Unit 556 Pavilion DriveAirpark IIMangereAuckland 2022New ZealandTel. +64 (9) 256 9910Fax. +64 (9) 256 [email protected]
Nigeria
28, Joel Ogunnaike StreetGRAIkejaLagosNigeriaTel. +234 (0)181567 [email protected]
South AfricaBotswanaMozambique
PO Box1535Link Hills 3652KwaZulu-NatalSouth AfricaTel. +27 31763 3222Fax. +27 31763 [email protected]
Tanzania
Ground Floor 369 Kilwa HouseToure DriveOyster bay-KinondoniPO Box 23197Dar-es-salaamTanzaniaTel. +255 2222 96313Mob.+255 767 [email protected]
Tunisia
Avenue de la BourseImm Al WafaLac IILes Berges du Lac1053 TunisTunisieTel. +216 7119 00 06Fax. +216 7119 00 [email protected]
UK Head Office
Power HouseSenator PointSouth Boundary RoadKnowsley Business ParkLiverpool L33 7RRUnited KingdomTel. +44 (0)151546 4446Fax. +44 (0)151546 [email protected]
