Energy Audit of Brunel University Howell Building
16
Energy Use Evaluation Of Howell Building Recommendations for Energy Use Reduction Kelechi Udeala
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Transcript of Energy Audit of Brunel University Howell Building
Energy Use Evaluation Of Howell BuildingRecommendations for Energy Use Reduction
Kelechi Udeala
Energy Use Evaluation Of Howell Building
• Use of the building began in 1968
• 4800 square meters of useful area
• Used mainly for academic purposes
55%
43%
2%
Electricity ConsumptionLighting Equipment AHU
Utility Cost (£)
Lighting 46,927
Equipment 29,526
AHU 1,707
98%
2%
Gas ConsumptionHeating DHW
Utility Cost (£)
Heating 58,902
DHW 1,203
Data Analysis
Integration Of Improvements
Insulation Glazing Wind Turbine Solar thermal Biomass Boiler Lighting0.0
100000.0
200000.0
300000.0
400000.0
500000.0
600000.0
Savings/Cost
Savings (£) Savings CO2 (kg)Savings Energy (kWh/Yr) Cost (£)
Utility Savings (£)Insulation 8393.5Glazing 8393.5Wind Turbine 19843.4Solar thermal 4998.0Biomass Boiler 8082.0Lighting 9104.1
Insulation Glazing Wind Turbine Solar thermal Biomass Boiler Lighting0
10
20
30
40
50
60
70
Payback Periods
Year
s
Improvement Payback (Yr.)Insulation 13.0Glazing 66.7Wind Turbine 6.0Solar thermal 14.0Biomass Boiler 2.5Lighting 0.5
IR ThermographyImportant for Insulation & Glazing
Jan-11
Feb-11
Mar-11
Apr-11
May-11
Jun-11Jul-1
1
Aug-11
Sep-11
Oct-11
Nov-11
Dec-11
Jan-12
0
50
100
150
200
250
300
350
Heat Loss Comparison
Standard Q-Loss Q-Loss With Improvements
Month
Heat
Loss
(kW
h)
Fabric Heat Loss Analysis
0 0.05 0.1 0.15 0.2-200
-100
0
100
200
300
400
500
600
Biomass BoilerLight-ingWind Tur-bineInsula-tionSolar ThermalGlaz-ingReduc-tion targetThousand tonnes of carbon saved/year
MA
C: £
/tCO
2
Marginal Abatement Cost Curve
Green League University Rankings
Core Elements
LCA
References• http://www.metoffice.gov.uk/public/weather/climate/gcptm05c7 (Average
Temperatures)• https://www.pilkington.com/~/media/Pilkington/Site%20Content/UK/Reference/Tabl
eofDefaultUValues.ashx (Glazing)
• https://www.uvalue-calculator.co.uk/ (Kingspan u-value calculator)• People & Planet University Green League• http://www.energysavingtrust.org.uk/corporate/our-calculations• Rebitzer, G., Hunkeler, D. (2003). Life cycle costing in LCM: Ambitions, opportunities,
and limitations – Discussing a framework. Editorial, International Journal of Life Cycle Assessment 8(5):253-256.
https://www.pilkington.com/~/media/Pilkington/Site%20Content/UK/Reference/TableofDefaultUValues.ashx
