Paper 2
Space Planning, Ventilation and Energy Efficiency in Offices
Filbert
Musau1 and Koen Steemers2
1University
of Bath, Department of Architecture & Civil Engineering, Bath BA2 7AY,
UK
2University
of Cambridge, Martin Centre, Dept. of Architecture, 6 Chaucer Road,
Cambridge CB2 2EB, UK
Abstract
This
work investigates the impact of space planning, interior porosity and
variable occupancy on the energy use in offices that is attributable to
ventilation/infiltration and air movement. TAS, Lightscape, and Excel
software packages were used to simulate and analyse airflow and thermal
loads in different office layouts. These layouts were created by varying
the internal configurations of a base case shell. Constructions of the
roof, floor, external walling, windows and vents of the base case shell
were based on good practice recommendations, as were the specifications
for ventilation, thermal and lighting conditions in the simulations. The
results show significant variations of: natural ventilation/infiltration
with plan regime; internal air movement with internal porosity; and
consequently thermal loads with layouts and occupancy levels. The choices
of layouts for given occupancy patterns and the design and control of
interior apertures should be carefully made since their impact on
ventilation in offices can significantly influence a building’s energy
consumption.
Key words: natural
ventilation, energy use, offices, space planning, interior porosity,
United Kingdom.
References
Allard F (ed.): (1998), “natural
ventilation in buildings: a
design handbook”. James & James, London.
Ashford CJ: (1997) “Avoidable waste/base
energy budgeting”, BRESCU Workshop Document, Watford, UK.
Baker N and Steemers K: (2002) “Daylight
Design of Buildings”. James & James, London.
Baker N and Steemers K: (2000). “Energy
and Environment in Architecture: a Technical Design Guide”. E. & F.N.
Spon, London.
BRE: (1994) “Natural Ventilation in
Non-domestic Buildings: Digest 399”. Building Research Establishment,
Garston, UK.
BRE: (2002) “General information leaflet
no. 72: Energy efficiency standards – for new and existing dwellings”.
Building Research Establishment, Garston, UK.
BRESCU: (1995) “Controls and Energy
Savings, Fuel Efficiency Booklet 10”. Building Research Energy
Conservation Support Unit, Harwell, UK.
Brill M: (2001) “Disproving widespread
myths about workplace design”, International Journal for Corporate
Real Estate, 1, (2), pp141-153.
CIBSE (1999). “Guide A1, Environmental
Design”. Chartered Institute of British Services Engineers, London.
CIBSE (1998). “Guide F, Energy Efficiency
in Buildings”. Chartered Institute of British Services Engineers,
London.
CIBSE: (1999) “Guide H, Building Control
Systems”. Butterworth-Heinemann, Oxford.
DETR: (2002) “Building Regulations,
Approved Document L2: Conservation of fuel and power in buildings other
than dwellings”, 2002 edition. Department of the environment, Transport
and the Regions, The Stationery Office, London.
Duffy F, Laing A, Jaunzens D and Willis S:
(1998) “New environments for working: the redesign of offices and
environmental systems for new ways of working”. E. & F.N. Spon,
London.
Givoni B: (1969) “Basic study of
ventilation problems in hot countries. Building Research Station, Haifa.
Givoni B: (1998) “Climate considerations
in building and urban design”. Van Nostrand Reinhold, London.
Leaman AJ, Bordass WT and Bromley AKR:
(1995) “Comfort, control and energy efficiency in offices”. Building
Research Establishment, Garston, UK.
Littlefair PJ: (2001) “Photoelectric
control: the effectiveness of techniques to reduce switching frequency”,
Lighting Research Technology. 33, pp43-58.
Littler J and Thomas R: (1984)
“Design with energy: the conservation and use of energy in buildings”.
Cambridge Architectural Press, Cambridge.
Meel JV: (2000) “The european office:
office design and national context”.
010 Publishers, Rotterdam.
Monica G and Grinfeld A: (2003) “Good
lighting in offices”, RIBA Journal. 110, (06) ppxvii-xx.
Phillips D: (2004) “Daylighting: Natural
Light in Architecture”. Architectural Press, London.
Saari A, Tissari T, Valkama E and Seppänen
O: (2006). “The effect of a redesigned floor plan, occupant density and
the quality of indoor climate on the cost of space, productivity and sick
leave in an office building–A case study”, Building and Environment.
41, (12), pp1961-1972.
Sekhar SC: (2004) ‘Evaluation of energy
efficient personalised air units for enhanced ventilation in the
tropics’, Healthy Buildings 7th International Conference, National
University of Singapore.
Siviour JB: (1980) “The effect of
increasing house insulation on electrical heating equipment design”, IEE
Conference on Effective Use of Electricity in Buildings, cited in Littler,
J. and Thomas, R. (1984) Design with Energy: the Conservation and Use of
Energy in Buildings. Cambridge Architectural Press, Cambridge.
Stipe MPE: (2003) with the Oregon Department
of Energy, “Demand-Controlled Ventilation: A Design Guide for Architects
and Engineers”. http://www.energy.state.or.us/bus/DCV/DCVintro.htm
(Updated 6/2/04, accessed 05/2008).
Tas Building Designer: (2004) Environmental
Design Solutions Limited (EDSL).
Tregenza P and Loe D: (1998) “The design
of lighting”. E. & F.N. Spon, London.
Tutt P and Adler D (eds.): (1979) “New
Metric Handbook, Planning and Design Data”. Architectural Press, London.
Wyon PD: (2000) “Individual control at
each workplace: the means and the potential benefits” In: Croome D.
(ed.) (2000) Creating the Productive Workplace. E & F N Spon, London.
Yeang K: (1996) “The Skyscraper Bioclimatically Considered: a Design
Primer”. London: Academy Editions.
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