Combined Heat and Power plants – carbon AND cost saving? Daman Ranby – Director Ashley Allsop...
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![Page 1: Combined Heat and Power plants – carbon AND cost saving? Daman Ranby – Director Ashley Allsop – Head of Sustainability.](https://reader038.fdocuments.in/reader038/viewer/2022110304/551a3817550346cb358b52c3/html5/thumbnails/1.jpg)
Combined Heat and Power plants – carbon AND cost saving?
Daman Ranby – Director
Ashley Allsop – Head of Sustainability
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Increasing Fuel Costs
Part L of the Building Regulations 2010
Corporate Social Responsibility
Energy Reduction Initiatives
Marketing Opportunities
The Bottom Line!
Overview
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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
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Combined Heat & Power – The Basics
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Combined Heat & Power – The Basics
930kWe Output CHP
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Combined Heat & Power – The Basics
5.7MWe Output CHP
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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
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“The basic principle of CHP is that you generate high cost electricity using low cost gas with less emissions”
Combined Heat & Power – The Basics
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Combined Heat & Power – The Basics
Heat Demand
100KW PowerPower
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
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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
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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
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Base Heating Load
CHP Hours
Hot Water Load
Time
CHP Hours CHP Operation Extended
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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
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CHP Plant
Gas Input 2500kW
Electrical Power 930kWe
Thermal Output 1300kWt
Installed cost, approx. £1m
Case Study - Plant
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Fuel Inputs
Natural 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
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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
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Operating Costs
Maintenance 7,440 MWh x 1.5p = £111k p.a.
CHP down time costs?
Case Study - Maintenance
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Financial Summary Per Annum
Gas Input £700k
Maintenance £111k
Electricity (£744k)
Heat Output (£364k)
Less CCL (£53k)
Total Approx. Saving (£350,000)
Case Study - Returns
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Case Study - Investment
Capital £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
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Over-sizing Plant
Reduced operating hours
Life Time Costs, Servicing, Shutdowns
Good Quality CHP - CHPQA – CCL Exempt
Attracts Enhanced Capital Allowances
Pros & Cons
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Correctly Designed CHP will –
• Reduce CO2 emissions
• Reduce running costs
• Promote CSR
• Improve the bottom line!
And Finally…..!
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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