Even Better than the Best Building Ever? The ZICER and Elizabeth Fry Low Energy Buildings Keith Tovey M.A., PhD, CEng, MICE Energy Science Director: Low.
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Presentation on theme: "Even Better than the Best Building Ever? The ZICER and Elizabeth Fry Low Energy Buildings Keith Tovey M.A., PhD, CEng, MICE Energy Science Director: Low."— Presentation transcript:
Even Better than the Best Building Ever? The ZICER and Elizabeth Fry Low Energy Buildings Keith Tovey M.A., PhD, CEng, MICE Energy Science Director: Low Carbon Innovation Centre School of Environmental Sciences
Main Energy Conservation Projects at UEA Constable Terrace/ Nelson Court Student Residences Elizabeth Fry Building Combined Heat and Power School of Medicine ZICER Building The Future Absorption Chilling
Termodeck Construction Air is circulated through whole fabric of building Heated using a normal domestic heating boiler (24 kW) No heat supply needed at temperatures as cool as 9 o C Triple glazing with Low Emissivity Glass ~ quadruple glazing 180 mm insulated cavity 300 mm roof insulation 100 mm floor insulation Air – Pressure Test at 50 Pa – not to exceed 1.0 ach Actual performance 0.97 ach Has deteriorated slightly since 1996 Uses regenerative Heat Exchangers 85% with heat recovery
Fresh Air Stale Air Fresh Air Operation of Regenerative Heat Exchangers
The performance of the building has improved with time Energy Consumption in Elizabeth Fry Heating provided by domestic sized boilers. Energy requirement 20% of good practice for Academic Buildings.
44 96 ECON 19 Good Practice Type 3 Office Elizabeth Fry 100 90 80 70 60 50 40 30 20 10 0 kg/m 2 /annum gas electricity carbon dioxide emissions thermal comfort +28% air quality +36% lighting +25% noise +26% Elizabeth Fry User Satisfaction An energy efficient building reduces carbon dioxide AND is a better building to work in. Elizabeth Fry: Carbon Dioxide Emissions and User Satisfaction
The ZICER Building Follows the tradition of the Elizabeth Fry Building Uses Termodeck construction Draws heat from University Heating Main Has a 34 kW array of Photo Voltaic cells on top floor and roof Zuckerman Institute for Connective Environmental Research
Elizabeth Fry performance has improved over years. ZICER will be better and less than 70% of emissions of mid 90’s best practice building Photovoltaic cells will generate ~ 30 kW and save 20 tonnes CO 2 per annum. Projected Performance of ZICER
UEA CHP Scheme Until 1999 most heat for space heating was supplied by large boilers Primary main temperature ~ 110 – 120 o C All electricity imported Energy bill was in excess of £1 million per year Three 1 MWe generators are now installed Provide the majority of the electricity for the campus Export electricity at periods of low demand Waste heat is used a primary heat source Supplemented by existing boilers CHP has reduced that figure by £400 000 per year
CHP Review 839015101.79.26537.68555.0tonnes 0.2770.1860.43kg/kWh 331503514815819895328kWh1997/98 balloons totaloilgaselectricity 571010278.0255.55256.92698.90.02486.7-420.1 tonnes 0.2770.186 0.43-0.43 kg/ kWh 922563282630771451007815630431578310097700020436531kWh1999/00 balloons totaloilCHPboilers Gener- ationimportexportelectricity Saving in CO 2 emissions as a result of CHP - 4824 tonnes CO 2 or 31.9% Equivalent to 2680 hot air balloons. [Note: UEA expanded during time and consumption increased so CO 2 savings are really higher than this].