Case Study No.8
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Case Study No.8: CHP Installation at Hydebank Young Offenders Centre (pdf, 155kb)Document viewers
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Supporting Information
For further information on the Central Energy Efficiency Fund see website:www.psecni.gov.uk
Publications from the Carbon Trust
GPG388 – Combined Heat and Power for Buildings
FL87 – Saving Money With Combined Heat and Power
GPCS458 - CHP at an Engineering Company
GIR082 – The Managers Guide to Custom Built Combined Heat and Power Systems
For details of the Carbon Trust’s services and free publications, call the helpline on 0800 85 20 05 or visit the website: www.thecarbontrust.co.uk
The Combined Heat and Power Association:
Website: www.chpa.co.uk
The Combined Heat and Power Quality Assurance Scheme:
Website: www.chpqa.com
To register under the CHPQA scheme for climate change levy exemption a quality index (QI) of greater than 100 is required. The formulae for calculating QI is as follows:
QI = X P + Y H
Where:
X is a factor for power related to alternative electricity supply options.
Y is a factor for heat related to alternative heat supply options.
P is the electrical generation efficiency
H is the heat generation efficiency
For the 210 kWe natural gas fired reciprocating engine unit at Hydebank
X = 200 and Y = 125
The calculated electrical generation efficiency was 30.6%. Therefore P = 0.306
The calculated heat generation efficiency was 32.8%. Therefore H = 0.328
Thus QI = 200 x 0.306 + 125 x 0.328 = 61.14 + 41.0 = 102.14.
Hence the unit at Hydebank qualifies for climate change levy exemption.
Other Publications
Energy Efficiency Best Practice Programme:-
Good Practice Guide 312 - Invest to Save?
Further Project Information
Terry Moseley: Terry.Moseley@nio.x.gsi.gov.uk
