building-performance case study: toondah harbour, cleveland
TRANSCRIPT
Building Performance
Case Study: Toondah Harbour, Cleveland
Building physics conceptual analysis
Building Performance
www.building-performance.com.au
Building Physics Conceptual Analysis– Outline design
Scope produced
A building physics concept report in word format and JPG of imagery used for:
• Mass modelling of a single concept or
imported model.
• Site specific temperature, humidity,
irradiance and wind history annual and
monthly trends.
• Concept CFD analysis of mass flow site.
• Solar irradiance mapping.
• Detailed analysis commentary.
Aims
A sample project to demonstrate the level of service Building-Performance offer for climatic site analysis, comparative concept energy performance reporting
and conceptual CFD.
Context: Toondah Harbour
Sample Project: Toondah Harbour – Priority development area proposed by Redland city council, current location
of ferry terminal to visit Stradbrooke Island.
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The site is located approximately 50km south east of Brisbane in Cleveland. The nearest relevant weather station for comparative analysis is 606554 – Manly.
The site dry bulb temperatures are predominantly between 18-24C with peaks of up to 31C (Jan) and lows of 6C (May). Diurnal (day vs night) swing is limited to 6-10C all year round. Direct solar is 800 w/m2 in summer, and never below 600 w/m2. There is high humidity all year round, particularly in the morning. Suggest ensure good ventilation flow year round to avoid internal mould issues.
Building Performance
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Climate
Temperature Bins
HumidityIrradiance and Diurnals
Site Weather station
Dry Bulb Temperature
1% & 99% Dry Bulb
Annually the most frequent winds are from a southerly direction at a 6-7 knots. The strongest infrequent winds are 20 knot westerly - typical in September.
Isolation of the afternoon winds (12-5pm) shows predominantly 5-10 Knot north and easterlies as would be expected due to the sea breeze. Isolation of summer months only shows dominance from the south-easterly direction. Suggest targeting cross-ventilation with lead openings on NE façade where possible.
Building Performance
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AfternoonsSummer
Wind
Speeds
Hours
MonthlyAnnual
The existing harbour is marginally off the north-south axis. Summer creates little shade between building at peak. Winter north aspects shows building will shadow all other buildings all day.
Sample H shaped mass model shows the south-easterly winds potentially causing a high wind tunnelling effect to the western entrance.
Form OrientationBuilding Performance
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SSE Ground X Axis Eaves X Axis
Summer Morning Summer Peak Summer Evening Winter Morning Winter Evening
NW Y Axis
Roof X Axis
NE Z Axis
Form IrradianceBuilding Performance
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The developed H shaped mass model shows improved limiting of summer gain all year round, except on eastern 45 deg slices. Winter sun to inner courtyard will be very little. Suggestion would be to reduce the north-west overhang.
Summer AM Irradiance
Summer Video Winter Video
Winter AM IrradianceSummer PM Irradiance Winter AM Irradiance
Building Performance
Case Study: Toondah Harbour, Cleveland
Building physics conceptual analysis
Building Performance
www.building-performance.com.au
All that for Only $1,500
Analyse your site today
Contact us
All imagery and concept used are for demonstration purposes of possible design only