© Copyright DRD Power Limited 2010 DRD Power Ltd Electric Power Generation from Waste Heat Sources...
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© Copyright DRD Power Limited 2010 DRD Power Ltd Electric Power Generation from Waste Heat Sources by Organic Rankine Cycle Clive Whitbourn CEng FIChemE Roger Mallinson CEng FIChemE 22 nd April 2010 New Ideas in Resource & Energy Efficiency - Peterlee
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Transcript of © Copyright DRD Power Limited 2010 DRD Power Ltd Electric Power Generation from Waste Heat Sources...
© Copyright DRD Power Limited 2010
DRD Power Ltd
Electric Power Generation from Waste Heat Sources by Organic Rankine Cycle
Clive Whitbourn CEng FIChemE
Roger Mallinson CEng FIChemE
22nd April 2010
New Ideas in Resource & Energy Efficiency - Peterlee
© Copyright DRD Power Limited 2010
Background
o Energy & Resource Consultantso Energy Mapping & Audits – Project
IdentificationoRenewable & Sustainable Technologieso Feasibility Studies
DRD
© Copyright DRD Power Limited 2010
The Opportunity
© Copyright DRD Power Limited 2010
Organic Rankine Cycle
Expander
Condenser
Preheater
Boiler
CW
Waste Heat
Electricity
© Copyright DRD Power Limited 2010
• Electricity savings ~£100kpa (200kW)• CO2 savings = 700 tpa (200kW)• Payback ~3 years • Zero emissions • Fully automatic • No toxic substances• Use of non-flammable refrigerants with
low GWP
Benefits
© Copyright DRD Power Limited 2010
• Low temperature heat source, ie 90°C and above
• Innovative use of a compressor as an expander
• No intermediate heat transfer fluid
• Use of non-flammable refrigerants with low GWP
ORC Innovations
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• Refrigerant Research - complete• Turbine Research - complete• Detailed Design - complete• Construction of 200kW Demonstration Unit• Commissioning and Operation – Q3. 2010
Project Milestones
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• Choice of refrigerant influenced by:– Environmental & Safety factors– Engineering– Thermophysical factors– Commercial factors
• Hydrocarbons, halogenated hydrocarbons, and ammonia/water were examined
• Both single component and mixed fluids were considered
Refrigerant Research
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• Ideally, use a mass-produced turbine for reasons of cost and availability
• No mass-produced turbines available, so a compressor run in reverse will be used
• Research identified any necessary modifications eg lubricant flow
Turbine Research
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Rated 200kWe ORC Unit
Modular Unit
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Waste heat sources >90°C
Typical examples:-• Low Pressure Steam 1 – 2 tonne/hr• Process Vapours• Hot Water/Condensate 40 m3/hr (min)• Hot process streams requiring cooling
Seeking Early Adoption Sites
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• Feasibility assessment
• Estimate of electricity produced and value
• CO2 savings
Potential for your Site
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• Carbon Trust
• Shell Springboard award in February 2009 - innovation and carbon reduction
• NStar Finance
Project Support
© Copyright DRD Power Limited 2010
Wilton Centre
Wilton
Redcar TS10 4RF
Tel: 01642 430090
Contacts: Clive Whitbourn
Roger Mallinson
DRD Power Ltd
© Copyright DRD Power Limited 2010
Temperature/Enthalpy Chart
Temperature / Enthalpy Chart
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200 250 300 350 400 450 500 550
Enthalpy (kJ/kg)
Tem
per
atu
re (
deg
C)
liquidvapourpumppreheaterevaporatorsuperheaterturbinecondenserheat sourceheat sinkTurbine power
