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Environmental Controls Environmental Controls I/IG I/IG Lecture 12 Lecture 12 Load Dominance Load Dominance Passive Cooling Passive Cooling

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Page 1: Environmental Controls I/IG Lecture 12 Load Dominance Passive Cooling Lecture 12 Load Dominance Passive Cooling

Environmental Controls I/IGEnvironmental Controls I/IGEnvironmental Controls I/IGEnvironmental Controls I/IG

Lecture 12Lecture 12Load DominanceLoad Dominance

Passive CoolingPassive Cooling

Lecture 12Lecture 12Load DominanceLoad Dominance

Passive CoolingPassive Cooling

Page 2: Environmental Controls I/IG Lecture 12 Load Dominance Passive Cooling Lecture 12 Load Dominance Passive Cooling

Load DominanceLoad Dominance

Envelope Dominated Buildings

Internally Dominated Buildings

L: p.224, T9.5a

Page 3: Environmental Controls I/IG Lecture 12 Load Dominance Passive Cooling Lecture 12 Load Dominance Passive Cooling

Internally Dominated Internally Dominated BuildingsBuildings

Heating/Cooling periods

L: p. 225, T9.5b

Page 4: Environmental Controls I/IG Lecture 12 Load Dominance Passive Cooling Lecture 12 Load Dominance Passive Cooling

Envelope Dominated Envelope Dominated BuildingsBuildings

Heating/Cooling periods

L: p. 226, T9.5c

Page 5: Environmental Controls I/IG Lecture 12 Load Dominance Passive Cooling Lecture 12 Load Dominance Passive Cooling

Heating Heating and and Cooling Cooling CyclesCycles

Comparison of heating and cooling cycles

L: p.225-6, T9.5b-c

Page 6: Environmental Controls I/IG Lecture 12 Load Dominance Passive Cooling Lecture 12 Load Dominance Passive Cooling

Passive Thermal ControlPassive Thermal Control

Sun Control heat avoidance Wind Control airflow Evaporative Cooling dry

environments Earth Cooling earth sheltering Radiant Cooling direct/indirect Dehumidification humid

environments

Page 7: Environmental Controls I/IG Lecture 12 Load Dominance Passive Cooling Lecture 12 Load Dominance Passive Cooling

Sun ControlSun Control

South Façade Overhangs

Internally Dominated Buildings

L: p. 230, T9.9a

Page 8: Environmental Controls I/IG Lecture 12 Load Dominance Passive Cooling Lecture 12 Load Dominance Passive Cooling

Sun ControlSun Control

South Façade Overhangs

Envelope Dominated Buildings

L: p. 231, T9.9b

Page 9: Environmental Controls I/IG Lecture 12 Load Dominance Passive Cooling Lecture 12 Load Dominance Passive Cooling

Sun ControlSun Control

East/West Façade Overhangs

L: p. 235, T9.12

Page 10: Environmental Controls I/IG Lecture 12 Load Dominance Passive Cooling Lecture 12 Load Dominance Passive Cooling

Sun ControlSun Control

East/West Façade Vertical Fins

L: p. 236, T9.13

L: p. 236, F9.13

Page 11: Environmental Controls I/IG Lecture 12 Load Dominance Passive Cooling Lecture 12 Load Dominance Passive Cooling

Sun ControlSun Control

North Façade Vertical Fins

L: p. 236, T9.113

L: p. 236, F9.14

Page 12: Environmental Controls I/IG Lecture 12 Load Dominance Passive Cooling Lecture 12 Load Dominance Passive Cooling

Sun ControlSun Control

Lycee Polyvalent; Frejus France, Norman Foster, 1993

L: p. 226, T9.12

Eastgate; Harare, Zimbabwe, Pierce Partnership, 1996

Page 13: Environmental Controls I/IG Lecture 12 Load Dominance Passive Cooling Lecture 12 Load Dominance Passive Cooling

Sun ControlSun Control

Sun Control Details

Menara UMNO; Penang, Ken Yeang,

1998

Page 14: Environmental Controls I/IG Lecture 12 Load Dominance Passive Cooling Lecture 12 Load Dominance Passive Cooling

Sun ControlSun Control

Offices for Apicorp; Al Khobar, Saudi Arabia, DEGW, 2000

Page 15: Environmental Controls I/IG Lecture 12 Load Dominance Passive Cooling Lecture 12 Load Dominance Passive Cooling

Sun ControlSun Control

Menara Mesieniaga; Subang Jaya, Malaysia, Ken Yeang, 1992

Page 16: Environmental Controls I/IG Lecture 12 Load Dominance Passive Cooling Lecture 12 Load Dominance Passive Cooling

Wind Wind Control-Control-ExteriorExterior

L: p. 268, F10.5c&d

Page 17: Environmental Controls I/IG Lecture 12 Load Dominance Passive Cooling Lecture 12 Load Dominance Passive Cooling

Wind Control-ExteriorWind Control-Exterior

L: p. 269, F10. 5e

Air-mixing due to eddy currents

• Enhance in summer

• Reduce in winter

Page 18: Environmental Controls I/IG Lecture 12 Load Dominance Passive Cooling Lecture 12 Load Dominance Passive Cooling

Wind Control-InteriorWind Control-Interior

L: p. 273, F10.6d&e

Cross Ventilation• Direction of wind

• Flow path continuity

• Streamlines

• Venturi effect

Page 19: Environmental Controls I/IG Lecture 12 Load Dominance Passive Cooling Lecture 12 Load Dominance Passive Cooling

Wind Control-InteriorWind Control-Interior

L: p. 270, F10.5hj&l

Page 20: Environmental Controls I/IG Lecture 12 Load Dominance Passive Cooling Lecture 12 Load Dominance Passive Cooling

Wind Control-InteriorWind Control-Interior

L: p. 283, F10.9b

Night Flush Cooling: daytime mode

Page 21: Environmental Controls I/IG Lecture 12 Load Dominance Passive Cooling Lecture 12 Load Dominance Passive Cooling

Wind Wind ControlControl

ARUP Campus; Solihull, UK, ARUP Associates, 2001

Page 22: Environmental Controls I/IG Lecture 12 Load Dominance Passive Cooling Lecture 12 Load Dominance Passive Cooling

Wind Wind ControlControl

ARUP Campus; Solihull, UK, ARUP Associates, 2001

Page 23: Environmental Controls I/IG Lecture 12 Load Dominance Passive Cooling Lecture 12 Load Dominance Passive Cooling

Wind ControlWind Control

Study Center Darwin College; Cambridge, UK, Jeremy Dixon and Edward Jones, 1994

Page 24: Environmental Controls I/IG Lecture 12 Load Dominance Passive Cooling Lecture 12 Load Dominance Passive Cooling

WindWindControlControl

Study Center Darwin College; Cambridge, UK, Jeremy Dixon and Edward Jones, 1994

Page 25: Environmental Controls I/IG Lecture 12 Load Dominance Passive Cooling Lecture 12 Load Dominance Passive Cooling

Sun & WindSun & WindControlControl

Marika Alderton House; Arnhem Land, Australia,

Glenn Mercutt, 1994

Page 26: Environmental Controls I/IG Lecture 12 Load Dominance Passive Cooling Lecture 12 Load Dominance Passive Cooling

Evaporative CoolingEvaporative Cooling

L: p. 260, F10.2eL: p. 259, F10.2d

Latent heat of vaporization…only works efficiently in dry climates

Page 27: Environmental Controls I/IG Lecture 12 Load Dominance Passive Cooling Lecture 12 Load Dominance Passive Cooling

Earth CoolingEarth Cooling

L: p. 291, F10.14a

Page 28: Environmental Controls I/IG Lecture 12 Load Dominance Passive Cooling Lecture 12 Load Dominance Passive Cooling

EarthEarthCoolingCooling

Winston House; Lyme, NH, Donald Metz, 1972

Rocky Mountain Institute; Old Snow Mass CO,

[Amory Lovins], 1984

Page 29: Environmental Controls I/IG Lecture 12 Load Dominance Passive Cooling Lecture 12 Load Dominance Passive Cooling

Earth CoolingEarth Cooling

Green Roof

California Academy of Science, San Francisco, CARenzo Piano, 2008

http://www.archdaily.com/6810/california-academy-of-sciences-renzo-piano/

Page 30: Environmental Controls I/IG Lecture 12 Load Dominance Passive Cooling Lecture 12 Load Dominance Passive Cooling

Composite StrategiesComposite Strategies

Beyeler Foundation Museum; Basel, Switzerland, Renzo Piano, 1997

Page 31: Environmental Controls I/IG Lecture 12 Load Dominance Passive Cooling Lecture 12 Load Dominance Passive Cooling

Composite StrategiesComposite Strategies

The Guthrie Pavilion; Shah-Alam, Malaysia, Ken Yeang, 1998

Page 32: Environmental Controls I/IG Lecture 12 Load Dominance Passive Cooling Lecture 12 Load Dominance Passive Cooling