Presentation is loading. Please wait.

Presentation is loading. Please wait.

Passive Design in the Pacific Environment Passive Design in the Pacific Environment PASSIVE DESIGN FOR THERMAL COMFORT IN A TROPICAL ENVIRONMENT Neil Purdie.

Published byJanel Mason Modified over 9 years ago

Similar presentations

Presentation on theme: "Passive Design in the Pacific Environment Passive Design in the Pacific Environment PASSIVE DESIGN FOR THERMAL COMFORT IN A TROPICAL ENVIRONMENT Neil Purdie."— Presentation transcript:

1 Passive Design in the Pacific Environment Passive Design in the Pacific Environment PASSIVE DESIGN FOR THERMAL COMFORT IN A TROPICAL ENVIRONMENT Neil Purdie

2 Thermal Modelling and Intuitive Experience –Understanding of heat transfer mechanism –Predicts internal temperatures –Uses real weather data (Guam) –Two software methods (ECOTECT & IES) –Verified by data loggers in Samoa –Actual building Faiaii exceeds predicted performance

3 Typical P Series Meeting House

4 The Pacific Region Between Tropic of Cancer (20°N ) and Tropic of Capricorn (20°N )

5 Ocean Surface Temperatures

6 Wind Speeds

7 Sustainability vs Sacred Cows: Comfort Envelope ( what will you accept?) Natural Ventilation vs Thermal Mass Ceiling Fans vs Openable Windows Occupancy (Transient or continuous) Accurate Modelling of temperatures Acceptance by occupants of wider envelope

8 Thermal Comfort Envelopes

9 P Series P 230 –17SC

10 Shading of Thermal Mass

11 Passive Vent provides equilibrium

12 Effective cooling from fans Ceiling fans create air movement Velocity of 2 – 3 m/s Air movement transfers heat to floor Air movement cools skin (evaporation) Combined effect of air movement over skin is a perceived temperature drop of 1  C even though air temperature has not dropped.

13 Effective cooling from fans Heat gain from people Cool Floor Air Speed = 2 to 3 m/s Ceiling Fan

14 Thermal mass Heavy weight concrete structure. –Thick concrete slab on grade. –Thick heavyweight concrete block wall. Slab on grade allows heat to be transferred into ground Thermal Mass only works if cool. Therefore must be shaded from external gains to be effective.

15 Internal temperature profiles Shows how internal temperatures vary across a particular day of the year.

16 Actual Thermal Profile

17 Outdoor Temperature and Humidity

18 Indoor Temperature and Humidity(Chapel)

19 Indoor Temperature and Humidity (Classroom)

20 Recommendations to maximise thermal comfort Shaded Thermal Mass Light coloured insulated roof Ceiling fans evenly distributed Internal flow of air for equilibrium Transient occupancy

21 Conclusions/ Application to New Zealand Acceptance of expanded comfort envelope (18  C to 26  C ) Acceptance of shaded thermal mass ( say NO to glass boxes) Acceptance of ceiling fans Heat and cool floor slabs for thermal comfort

Download ppt "Passive Design in the Pacific Environment Passive Design in the Pacific Environment PASSIVE DESIGN FOR THERMAL COMFORT IN A TROPICAL ENVIRONMENT Neil Purdie."

Similar presentations

J.B. Speed School of Engineering University of Louisville KEEPS Energy Management Toolkit Step 2: Assess Performance & Opportunities Toolkit 2J: Building.

J.B. Speed School of Engineering University of Louisville KEEPS Energy Management Toolkit Step 2: Assess Performance & Opportunities Toolkit 2J: Building.
HEAT LOSS & HEAT GAIN HEAT FLOW. Heat flows from high temperature to low temperature There are 3 types/methods of heat flow/transfer: 1.Conduction- through.

HEAT LOSS & HEAT GAIN HEAT FLOW. Heat flows from high temperature to low temperature There are 3 types/methods of heat flow/transfer: 1.Conduction- through.
eQuest Quick Energy Simulation Tool

eQuest Quick Energy Simulation Tool
Building Energy Rating

Building Energy Rating
Building Envelope. Energy Conservation House design and orientation Lifestyle changes Energy efficiency.

Building Envelope. Energy Conservation House design and orientation Lifestyle changes Energy efficiency.
Tas seminar/demonstration on Part L 2006 of the Building Regulations Presented by Alan Jones EDSL February 2006 www.edsl.net.

Tas seminar/demonstration on Part L 2006 of the Building Regulations Presented by Alan Jones EDSL February
MEP design Mechanical, Electrical, Plumbing. Often separate consultants Can be separate even within a single firm Often performed on a design-build basis.

MEP design Mechanical, Electrical, Plumbing. Often separate consultants Can be separate even within a single firm Often performed on a design-build basis.
HVAC: heating, ventilating, and air conditioning this is a thermostat: it sends signals to the heating/cooling system.

HVAC: heating, ventilating, and air conditioning this is a thermostat: it sends signals to the heating/cooling system.
The Three Tiered Philosophy

The Three Tiered Philosophy
The Portland Street Building Back to “Select a building” Back to “Select a building” NatVent Presentation of the building Presentation of the building.

The Portland Street Building Back to “Select a building” Back to “Select a building” NatVent Presentation of the building Presentation of the building.
ATA Melbourne Branch presentation April 2008 Jim Lambert

ATA Melbourne Branch presentation April 2008 Jim Lambert
Chapter 5: Designing for Heating and Cooling 5.1 Organizing the problem a) Fenestration How much is optimum for the building? What should the form of the.

Chapter 5: Designing for Heating and Cooling 5.1 Organizing the problem a) Fenestration How much is optimum for the building? What should the form of the.
BRE Energy Efficient Office of the Future

BRE Energy Efficient Office of the Future
Using Thermal Energy Pgs. 151-177 6-1 Thermal Energy on the Move 6-2 Using heat to Stay Warm.

Using Thermal Energy Pgs Thermal Energy on the Move 6-2 Using heat to Stay Warm.
1 ISAT 413 - Module III: Building Energy Efficiency Topic 6:Stead-State Building Loads z Fabric Loss z Ventilation Loss z Environmental Temperature z Steady-State.

1 ISAT Module III: Building Energy Efficiency Topic 6:Stead-State Building Loads z Fabric Loss z Ventilation Loss z Environmental Temperature z Steady-State.
BEM class 3 Climate & Human Comfort. Class (lecture) objectives Appreciation of the indoor and outdoor environments and how they relate to our energy.

BEM class 3 Climate & Human Comfort. Class (lecture) objectives Appreciation of the indoor and outdoor environments and how they relate to our energy.
1 Meeting ASHRAE Fundamentals, Standard 55 & 62.1 with Chilled Beams Displacement Ventilation.

1 Meeting ASHRAE Fundamentals, Standard 55 & 62.1 with Chilled Beams Displacement Ventilation.
Passive Cooling. Natural Ventilation Air Cooling Shades.

Passive Cooling. Natural Ventilation Air Cooling Shades.
Thermal Energy. Objectives 6.1 Compare and contrast the transfer of thermal energy by conduction, convection, and radiation. 6.1 Differentiate between.

Thermal Energy. Objectives 6.1 Compare and contrast the transfer of thermal energy by conduction, convection, and radiation. 6.1 Differentiate between.
Heating and Air Conditioning I Principles of Heating, Ventilating and Air Conditioning R.H. Howell, H.J. Sauer, and W.J. Coad ASHRAE, 2005 basic textbook/reference.

Heating and Air Conditioning I Principles of Heating, Ventilating and Air Conditioning R.H. Howell, H.J. Sauer, and W.J. Coad ASHRAE, 2005 basic textbook/reference.

Similar presentations

Ads by Google