Paper 2: Volume 5 No.2 Sept 2006 Edition
Active
Thermal Control for Traditional Naturally Ventilated Buildings
Bin
Su
School
of
Architecture
and Landscape Architecture, Unitec
New Zealand
,
Auckland
,
New Zealand
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Abstract
Traditional naturally ventilated houses are not designed for active
thermal control. When natural
ventilation is not sufficient for thermal comfort and a fan is unable to
restore thermal comfort because the air temperature is higher than the
people’s skin temperature, temporary air-conditioning is needed.
To maintain indoor thermal comfort and save cooling energy, a new
concept of active thermal control for a naturally ventilated house is
explored. This study aims to
use both passive and active thermal controls to restore thermal comfort
for occupants in a traditional naturally ventilated house and to save
cooling energy. This concept
of active thermal control can be applied not only to the traditional
naturally ventilated house but also to active thermal control design for a
large indoor space separated or surrounded by partitions in a free running
building.
Key words: Naturally
ventilated building, indoor thermal comfort, active thermal control,
energy saving, indoor air-conditioning tent, localised cooling, tropical
climate.
References
ASHRAE:
(2005) “ASHRAE Handbook: Fundamentals” American Society of Heating,
Refrigerating and Air-Conditioning Engineers, Inc.
Atlanta
,
USA
.
ASHRAE Standard 62: (2001) “Ventilation for acceptable indoor air
quality”, American Society of Heating, Refrigeration and
Air-conditioning Engineers,
Atlanta
,
USA
.
Aynsley RM: (1991) “Considerations for airflow in
buildings with cool pools”, Preprints of Eighth International
Conference on Wind Engineering,
University of Western
Ontario
, July 8-12, paper 20-1.
Aynsley R and Su B: (2003) “A field study of indoor wind speed” in LN
Lowes and G Miller (Eds), CD of Proceedings of the 2003 ASCE Structures
Congress & Exposition, May 29-31, Seattle.
MacFarlane
WV
: (1958) “Thermal comfort
zones”, Architectural Science Review, 1, pp1-14.
Su B: (1999) “A study of residential development with particular
reference to indoor and outdoor natural ventilation of medium density
houses in hot-humid tropical climate”, PhD Thesis, The University of
Auckland, New Zealand.
Su B: (2001) “Estimation of natural cross-ventilation potentials of
medium-density housing in the humid tropics”, Architectural Science
Review, 44.4, pp405-418.
Su B: (2002) “A field study of mould growth and indoor health
conditions in
Auckland
dwellings”, Architectural Science Review, 45.3, pp1-10.
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