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.