combined heat and power plants – carbon and cost saving? daman ranby – director
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Combined Heat and Power plants – carbon AND cost saving? Daman Ranby – Director Ashley Allsop – Head of Sustainability. Overview. Increasing Fuel Costs Part L of the Building Regulations 2010 Corporate Social Responsibility Energy Reduction Initiatives Marketing Opportunities - PowerPoint PPT PresentationTRANSCRIPT
Combined Heat and Power plants – carbon AND cost saving?
Daman Ranby – Director
Ashley Allsop – Head of Sustainability
Increasing Fuel Costs
Part L of the Building Regulations 2010
Corporate Social Responsibility
Energy Reduction Initiatives
Marketing Opportunities
The Bottom Line!
Overview
A “Generator” of Electricity & Hot Water
For Reciprocating Engines:
• Fuels - Natural Gas, Bio Oil & Bio Gas
• Electrical Power Outputs up to to 10MW
Combined Heat & Power – The Basics
Engine100% Fuel >30% Electricity
50% H
eat
<20% Losses
Combined Heat & Power – The Basics
Combined Heat & Power – The Basics
930kWe Output CHP
Combined Heat & Power – The Basics
5.7MWe Output CHP
Combined Heat & Power – The Basics
The UK Electricity Grid Mix <45% Efficient
Grid Electricity Generation produces 0.517Kg/CO2/kWh
Expensive Energy 10pence/kWh
Power Station Mix
100% Fuel 50% Electricity Grid Losses 45% Electricity
Waste H
eat
“The basic principle of CHP is that you generate high cost electricity using low cost gas with less emissions”
Combined Heat & Power – The Basics
Combined Heat & Power – The Basics
Heat Demand
100KW Power Power Demand 100KW Power
100KW Heat 100KW Heat
50KW Losses 150KW Losses
CHP Gas Boiler & Grid
25Kg CO2
52Kg CO2
Included
20Kg CO2
20Kg CO2
10Kg CO2
Total 50Kg CO2 Total 77Kg CO2
At the beginning of a project
Installing new boiler plant.
Replacing/refurbishing existing plant.
Reviewing electricity supply.
Reviewing standby electrical generation capacity or plant.
Creating Heat Islands – Consider your neighbours!
When to Consider CHP
Island or Synchronised Mode
Single/Modular Lead CHP covering base heat profile
Usually Heat Led
Additional plant space
Acoustic treatment of plant spaces
Piping Modifications
How CHP Integrates Into Your Factory
Base Heating Load
CHP Hours
Hot Water Load
Time
CHP Hours CHP Operation Extended
Feasibility Study completed
Need for replacement steam boiler plant
Site hot water demand 8000 Litres per hour
Electricity demand always above 800KVA
Site operation 24/7
CHP allowed to run 8000 hours per year
Capital Purchase agreed
Case Study - Background
CHP PlantGas Input 2500kW
Electrical Power 930kWe
Thermal Output 1300kWt
Installed cost, approx. £1m
Case Study - Plant
Fuel InputsNatural Gas – 2500 kW x 8000 hours = 20,000 MWh
Cost of Gas Used = 20,000 MWh x 3.5p = £700k
Case Study - Fuel
100% Fuel
Outputs
8000 hours x 930kWe = 7,440 MWh
Value of Electricity Produced = 7,440 MWh x 10p = £744k
Climate Change Levy Avoided 7,440 MWh x 0.485p = £36k
8000 hours x 1300kWt = 10,400 MWh
Value of Heat Produced = 10,400 MWh x 3.5p = £364k
Climate Change Levy Avoided 10,400 MWh x 0.165 = £17k
Case Study - Outputs
Electricity
Heat
Operating Costs
Maintenance 7,440 MWh x 1.5p = £111k p.a.
CHP down time costs?
Case Study - Maintenance
Financial Summary Per AnnumGas Input £700k
Maintenance £111k
Electricity (£744k)
Heat Output (£364k)
Less CCL (£53k)
Total Approx. Saving (£350,000)
Case Study - Returns
Case Study - InvestmentCapital £1M
Savings p.a. (£350k)
Total Approx. Payback 2.8 years
Return on Investment ROI 35%
CO2 Traditional Route 5,905 tons
CO2 produced by CHP 3,960 tons
Case Study
Over-sizing Plant
Reduced operating hours
Life Time Costs, Servicing, Shutdowns
Good Quality CHP - CHPQA – CCL Exempt
Attracts Enhanced Capital Allowances
Pros & Cons
Correctly Designed CHP will –
• Reduce CO2 emissions
• Reduce running costs
• Promote CSR
• Improve the bottom line!
And Finally…..!
Daman Ranby
Office 01159 758595
Mobile 07871 545566
Email [email protected]
Questions
Useful websites and Documents
Useful websites:www.chpa.co.uk;
www.carbontrust.co.ukwww.CIBSE.co.uk
CIBSE AM12GPG388