power generation - clarke energy · pdf filepower generation with gas engines through on-going...
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PowerGenerationElectricityCogeneration / CHPTrigeneration / CCHPQuadgeneration
Power Generation with Gas Engines
Through on-going investment inresearch and development, GE’s gasengines are highly efficient at theconversion of the energy within gasinto electrical energy.
Electrical generation plants come intwo main forms:— Stable base load (continuous)
generation— Electricity peaking
Base-load generation is usefulwhere there is a stable source offuel, such as natural, landfill or coalgas to power the generators. GEJenbacher gas engines arerenowned for their reliability in thefield and when challenged withdifficult gases. The generation ofelectricity alone typically takes placewhere there is no local need forheating and cooling. The power thatis produced can either be exportedto the local electricity grid, oralternatively be used in island modeoperation to power local facilities.
Electricity peaking stations typicallyoperate in standby mode, thenwhen there is a peak in demand forpower from the electricity grid; thegas engines receive a signal tocommence operation. Due to theirflexibility and robustness gas enginesare able to provide a rapid responseto fluctuating demand. They arethen turned off as demand reduces.
Cogeneration – Combined Heatand Power
Cogeneration or combined heat andpower (CHP) systems areconfigured to produce bothelectricity and useful heat. GEJenbacher CHP systems utilise heatproduced during the combustion ofthe gas in the engine and facilitateprocess efficiencies of more than90%. This efficient form of energyconversion achieves primary energysavings of roughly 40% by using agas engine cogeneration system asopposed to separate electricity andheat generation equipment.Cogeneration plants are typicallyembedded close to the end userand therefore help reducetransportation and distributionlosses.
The heat from the engine is availablein two key forms. Firstly low gradeheat is recovered from the coolingwater circuit of the engine. This istypically available as hot water forrecovery via a plate heat exchanger.Secondly high grade heat from theengine exhaust can be utilised. Thisheat leaves the engine at over 450°Cand can be used directly, in a boilerto generate steam or combined withthe low grade heat and recovered ashot water.
PowerGenerationClarke Energy is the authorised distributor and servicepartner for GE Energy’s gas engine division in a growingnumber of countries across the world. In addition toproviding high-efficiency, reliable gas engines we combinethiswith the expertise and resources to deliver unbeatableproduct support.
Whether your requirement is for the supply of a single gasengine generator or a complete turnkey power generationfacility, we can meet that need. Our ability to add value byoffering an end-to-end service, from initial proposal toreliable long-term maintenance, has led to us becoming amulti-national company with operations in ten countriesacross the globe. Our company prides itself on integrity,delivering only the highest quality products whilst providinga reliable accountable localised service.
Benefits of working with Clarke EnergyClarke Energy provides flexible solutions for your gasgeneration projects. Our services range from the supply ofa gas engine generator, through to the complete turnkeyinstallationofagaspoweredgeneration facility.ClarkeEnergyhas a dedicated, top-quality team of sales, engineering,projectmanagement, commissioningandmaintenancestaffto meet your needs. We also offer long-term maintenancecontracts backed up by a strong balance sheet, givingpeace of mind with respect to the long-term performanceof your GE gas generation equipment.
Preston Hospital, UK,1x JMS616 Ankleshwar, India, 3 x JMS320
Trigeneration – Combined Heat,Power and Cooling
Trigeneration or combined heatpower and cooling (CHPC) systemstake the concept of cogeneration tothe next level. Trigeneration systemsproduce electricity along with usefulheat and cooling water. Here theheat recovered from the engine isused in absorption chillers. Theseheat driven chillers are able toprovide cold water for utilisation inair conditioning systems or forprocess water.
Combining a CHP or cogenerationplant with an absorptionrefrigeration system allowsutilisation of seasonal excess heatfor cooling. The hot water from thecooling circuit of the plant serves asdrive energy for the absorptionchiller. The hot exhaust gas from thegas engine can also be used as anenergy source for steam generation,which can then be utilised as anenergy source for a highly efficient,double-effect steam chiller. Up to80% of the thermal output of thecogeneration plant is therebyconverted to chilled water. In thisway, the year round capacityutilisation and the overall efficiencyof the cogeneration plant can beincreased significantly.
Quadgeneration - Combined Heat,Power, Cooling with CO2 recovery
Quadgeneration systems are someof the most advanced gas enginedriven power plants in the world.Quadgeneration encompasses thefeatures of a trigeneration system,with electricity, heat and cooling andincludes the recovery of carbondioxide from the exhaust gas.
Carbon dioxide can be used for anumber of purposes includingencouraging growth in plants or ifcleaned to food grade quality canthen be used in carbonised drinksindustry.
Quadgeneration not only providesthe benefits of high efficiencygeneration, utilising over 90% of theenergy contained within the gas, italso utilises carbon dioxide, a by-product of the combustion processto give the highest levels ofperformance.
Our Competence
Clarke Energy has comprehensiveexperience in the engineering,installation and maintenance of gasbased power generation facilities.
The GE Jenbacher gas engine isknown for having the highest levelsof electrical efficiency on the market.When coupled with a contractualmaintenance agreement with ClarkeEnergy it will give peace of mind thatthey will achieve the highest levels ofavailability and returns for theirproject.
Fuel gas
Buffer
Heat exchanger
Exhaust gas
Peak boiler
Electrical energy
Heat consumer
Fuel gas
Buffer
Heat exchanger
Exhaust gas
Peak boiler
Electrical energy
Heat consumer
Cooling tower
Absorption chillerRefrigeration consumer
Cogeneration Schematic
Trigeneration Schematic
If you would like to discovermore about gas enginebased generation, or howClarke Energy can helpdevelop your powerscheme please contact yourlocal sales office.
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