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HospitalCogeneration
Combined heat and power
Clarke 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.
Benefits
— Energy savings that can bediverted to fund the treatment ofpatients.
— Financial benefits compared tothe separate purchase ofelectricity and heating fuel.
— Environmental benefits related toreduced carbon emissions.
— Flexible technology that can beused to provide electricity,heating and cooling if required.
Cogeneration for Hospitals
There is increasing pressure on thehospitals and healthcare sectors toimprove efficiency. With respect toenergy this takes three key forms – — Making limited financial
resources go further — Improving energy efficiency— Reducing carbon emissions
Using a combined heat and power(CHP) plant in a hospital is an idealway of achieving each of these threetargets. Natural gas is a clean-burning low carbon emission fuel. A CHP plant facilitates the highefficiency use of this fuel, byrecovering not only electricity butalso heat.
When a hospital purchases bothelectricity from the national grid andin parallel gas or another fuel forheating this can lead to high costs.Using a gas engine-based CHP plantfacilitates the purchase of a single fuelsource to achieve both the productionof electricity and heat.The conversionefficiency of a gas engine is veryhigh (>90%) and therefore can resultin long-term operational costsavings for the hospital.
Hospitals by their nature are highenergy consumers. Energy usage inhospitals takes a number of formsincluding:— Electricity – required to power
the lighting and equipment of thefacility
— Hot water – For cleaning &general use
— Steam – For sterilisation, cleaning(more applications needed)
— Cooling – For refrigeration,freezing and air conditioningsystems.
Each of these energy types can beproduced at high efficiency with theassistance of a combined heat andpower facility.
HospitalCogeneration
Christie Hospital,1x J420 –1.4MWe
Great Ormond Street Hospital,1x J420 –1.4MWe
Photo: Nigel Cox
Guys and St Thomas’ Hospital,1x J620 +1x J620 – 6MWe total
Spend lesson energy
and more ontreatment
Natural Gas
Natural gas is an abundant, cleanlow-carbon fossil fuel that can bereadily utilised for the production ofelectricity. The high efficiency of theGE Jenbacher gas engine is wellsuited to the provision of reliabledecentralised electricity utilisingnatural gas as a fuel.
The utilisation of natural gas in gasengines is characterised by thelowest carbon dioxide emissionlevels of all fossil fuels. Due to thefact natural gas is low in carbon, buthas a high hydrogen content, naturalgas has the most favourable carbondioxide balance. The combustion of natural gas produces around40-50% less carbon dioxide thanwhen coal is burned to produce thesame amount of energy. Notably italso has low emissions of sulphurdioxide (SO2), oxides of nitrogen(NOx) and particulate matter.
As a fuel, natural gas is set to becomea significant source of power in thecoming years. Natural gas isprojected to become the mostsignificant fossil energy medium inthe next fifty years.
Application
Natural gas generators can beconfigured in a number of ways. Inaddition to the production ofelectricity, generators can alsoprovide heating as hot water orsteam, cooling water and cleancarbon dioxide.— Cogeneration or combined heat
and power (CHP)— Trigeneration of combined heat,
power and cooling (CCHP)— Quadgeneration or CCHP with
carbon dioxide recovery— Island mode operation –power
production isolated from theelectricity grid
Natural gas generation relies upon awell-developed and stable naturalgas supply.
Our Competence
Clarke Energy has a long andextensive experience in theengineering, installation andmaintenance of combined heat andpower plants for hospitals.
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 tothe customer that they will achievethe highest levels of availability andhave constant returns on theirinvestment.
0 20 40 60 80 100
%
Typical Natural Gas Composition
CH4
Methane
C2H6
Ethane
C3H8
Propane
C4H10
Butane
N2
Nitrogen
Preston Hospital, UK,1x JMS616
Fuel gas
Exhaust gas
Waste HeatBoiler
Steam
Electricity
Hot Water
Hospital
Bypass
Hospital Cogeneration Schematic
If you would like to find outmore about natural gasbased power, pleasecontact your local ClarkeEnergy office.
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