step by step chp: the pitfalls to avoid between planning and design
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Discover how you can overcome some of the pitfalls associated with planning cogeneration projectsTRANSCRIPT
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www.energ-group.com/chp
Step by step CHP:The pitfalls to avoid between planning and design
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Cogeneration can save money, conserve energy, and reduce emissions - but
specifying the right unit for the site in question has its pitfalls.
Find out how to avoid these common mistakes when taking your CHP project from planning
through to design.
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Risks to the viability of a CHP project
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Poor site energy efficiency
Mis-sizing plant Site-specific issues
Risks to the viability of a CHP project
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Poor site energy efficiency
Mis-sizing plant
The wrong choice of fuel
Site-specific issues
The finance model
Risks to the viability of a CHP project
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Poor site energy efficiency
The wrong choice of fuel
None of these problems, however, are insurmountable.
Site-specific issues
Risks to the viability of a CHP project
Mis-sizing plant
The finance model
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Greater and longer term benefits are available if energy saving measures are implemented and poor performing plant are improved before sizing a CHP system.
Poor site energy efficiency
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Building insulation
Lighting
Power factor
Existing boiler efficiency
Greater and longer term benefits are available if energy saving measures are implemented and poor performing plant are improved before sizing a CHP system.
So check:
Poor site energy efficiency
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Building insulation
Lighting
Power factor
Existing boiler efficiency
So check:
Every 1°C of site overheating adds 8% to heating costs
Poor site energy efficiencyGreater and longer term benefits are available if energy saving measures are implemented and
poor performing plant are improved before sizing a CHP system.
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Detail is vital when sizing CHP.
Mis-sizing plant
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Detail is vital when sizing CHP.
Mis-sizing plant
Calculate hourly consumption of power and gas during the working day, the week and season to season.
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Detail is vital when sizing CHP.
Mis-sizing plant
Calculate hourly consumption of power and gas during the working day, the week and season to season.
Economical viability typically requires a heat demand all year of at least 17
hours a day, 5 days a week.
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Detail is vital when sizing CHP.
Mis-sizing plant
Calculate hourly consumption of power and gas during the working day, the week and
season to season.
Economical viability typically requires a heat demand all year of at least 17 hours a day, 5 days a week.
The ratio of heat to power should govern the choice of CHP technology and
size. Mismatch could dramatically reduce potential CHP gains.
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Future-proofing
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Future-proofing
What are the prospects of fuel and electricity cost changes?
Are energy efficiency measures in place?
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Future-proofing
What are the prospects of fuel and electricity cost changes?
Does the business have plans to expand?
Are energy efficiency measures in place?
Will the site’s heat and power demands change?
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Site-specific issuesOverlooking the detail in the crucial connections of the CHP system can lead to costs over
running during installation.
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Site-specific issuesOverlooking the detail in the crucial connections of the CHP system can lead to costs over
running during installation.
The gas network connection
The power network connection
A connection to local heat network where available
A heat rejection outlet where needed
Check the exact siting of:
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Site-specific issuesOverlooking the detail in the crucial connections of the CHP system can lead to costs over
running during installation.
Check the exact siting of:Are there planning requirements or noise abatement issues to be
considered?The gas network connection
The power network connection
A connection to local heat network where available
A heat rejection outlet where needed
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Site-specific issuesOverlooking the detail in the crucial connections of the CHP system can lead to costs over
running during installation.
Check the exact siting of:Are there planning requirements or noise abatement issues to be
considered?
Can the gas pipework accommodate the increased
volume of gas?
The gas network connection
The power network connection
A connection to local heat network where available
A heat rejection outlet where needed
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Site-specific issuesOverlooking the detail in the crucial connections of the CHP system can lead to costs over
running during installation.
Check the exact siting of:Are there planning requirements or noise abatement issues to be
considered?
Can the gas pipework accommodate the increased
volume of gas?
Will the power network support your connection?
The gas network connection
The power network connection
A connection to local heat network where available
A heat rejection outlet where needed
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Fuel Selection and Procurement
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Fuel Selection and Procurement
Check the duration and volumes in your gas and
electricity supply contract - there could be exit fees.
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Fuel Selection and Procurement
Do you have biogas available? Some biogases can contain
corrosive components, so the choice of CHP plant is crucial as is the choice of lubricant.
Check the duration and volumes in your gas and
electricity supply contract - there could be exit fees.
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Finance model
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Finance model
Invest your own money to get all the cost benefits but take on all
the risk.
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Finance model
Invest your own money to get all the cost benefits but take on all
the risk.
Utilise third party financing to share the benefits and minimise
the risks.
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Check out the incentives
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Check out the incentives
CHP can attract tax and other benefits that can boost the economy...
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Check out the incentives
CHP can attract tax and other benefits that can boost the economy...
...especially when specified to meet the requirements of ‘good quality’ CHP under the CHPQA scheme.
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ChecklistTo avoid the pitfalls in cogeneration, detailed design is the only design. Remember to:
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Audit energy efficiency measures.
Correctly size the plant based on heat
and power demands.
Manage your fuel selection and cost.
ChecklistTo avoid the pitfalls in cogeneration, detailed design is the only design. Remember to:
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Audit energy efficiency measures.
Correctly size the plant based on heat
and power demands.
Mitigate any site specific issues that might affect
installation.
Manage your fuel selection and cost.
Select a finance model that suits the
project.
ChecklistTo avoid the pitfalls in cogeneration, detailed design is the only design. Remember to:
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01www.energ.co.uk/chp
CHP Project Planning: How to Plan CHP Equipment Installation