ECON 19 Type 2 Good Practice Office NV >> APU Queens Building 1995 ANV
UEA Elizabeth Fry Building MM 1997
UEA E Fry Building with kitchen MM 2005 UEA Elizabeth Fry Building MM 2010 Visby Library Sweden 2002-04 MM
Portland Building Portsmouth 1998 ANV+ de Montfort Queens Building 1996 ANV de Montfort Queens Building 2004 ANV
ECON 19 Type 3 Good Practice Office AC >> Orchard LRC Birmingham 2001 ANV Gloucester LRC 2004 MM
ECON 19 Type 3 Typical Office AC >>
-10 0
10 20
30 40
50 60
Annual CO2 emissions from university buildings (kg/m2
70 80
90 100
110 120
130 140
150 Treated Floor Area at UK CO2
The diagram shows the estimated breakdown of energy use in 1997, 2005 (when the catering kitchen was in full operation) and 2010, in relation to office benchmarks from the Carbon Trust’s Energy Consumption Guide 19 (marked with chevrons) and to other university buildings reviewed in PROBE and related studies. The graphs are expressed as annual CO2 emissions at Defra 2011 UK factors. The data are sorted by CO2 emissions for heating, hot water, cooling, ventilation and lighting. At all three dates, Elizabeth Fry still maintains its place towards the low-carbon end of the range. The biggest changes between 1997 and 2010 are in heating and hot water, largely due to the change to 24/7 hot water
article does not change them. The changes included stripping-out the popular ground- floor seminar rooms and their heavy blockwork walls and providing a student hub and administration centre for a large number of faculties. The Hub includes pigeon holes and
deposit boxes for coursework and a four- position enquiries counter behind the entrance hall. To the east, it has a drop-in area for students and staff, with soft chairs, a kitchenette and vending machines. To the west, there are open-plan offices for 45 administrative staff and a hub room for the computer system (the servers are elsewhere).
Energy use Annual energy use in calendar year 1997 was 61 kWh/sq m treated floor area (TFA)
www.cibsejournal.com factors of 0.184 for gas and 0.525 for elecricity) AC = air conditioned, ANV = advanced natural ventilation, MM = mixed mode, NV = naturally ventilated
and the appearance of some additional electric heaters. Lighting and office equipment energy use have also gone up owing to increased occupancy and equipment levels. In relation to other buildings and benchmarks, energy use for heating
and hot water is still good, while lighting has deteriorated owing to the low efficiency of the original pelmet system and greater hours of use now. CO2 emissions from fans, pumps and controls (mostly fans) are reasonable in relation to the other mixed-mode buildings and to air-conditioned benchmarks, but nevertheless of a similar magnitude to those from heating and hot water.
of electricity, 31 kWh/sq m of gas for heating, and 4.2 kWh/sq m for domestic hot water. In the ensuing years, annual electricity
use rose inexorably by some 2 kWh/sq m every year, to a total of 75 kWh/sq m in mid-2004. In 2004-06, with the all-electric catering kitchen in daily use, annual consumption climbed to 90 kWh/sq m. It then fell to 72 kWh/sq m in the year to June 2008. Data after that is unreliable owing to metering faults. In addition, annual gas consumption for
heating fluctuated within a narrow range of 27-33 kWh/sq m. The total in the year to July 2007 was 28.5 kWh/sq m, after which there was a meter fault. Resumed measurements revealed higher figures of 35-36 kWh/sq m for the years to July 2009, 2010 and 2011. The reasons include
Heating + hot water gas (normalised) Heating and hot water – electricity Refrigeration and heat rejection Fans, pumps and controls Lighting Office equipment Catering and vending Other electricity PV contribution (deduct) Gas for catering
Fifteen years on, Elizabeth Fry remains a comfortable, low-energy building in relation to most of its peers, although some things have drifted a little
March 2012 CIBSE Journal 33
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