Primrose Sands Solar Passive House 2020

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Location
Primrose Sands TAS 7173
    • Housing Type:
    • Standalone House
    • Project Type:
    • New Build
    • Open with support of
    • Renew Tasmania South Branch
    • Builder
    • Craig Thompson Building Services
    • Designer
    • Draftee

About Primrose Sands Solar Passive House

I designed a small two bed-roomed solar-passive house (67.5m2 internal floor area with 36m2 outside deck). Key design considerations were:
– cost (land and house package was not to exceed $350K)
– energy performance (with 3.89kW solar panels, I am aiming for energy bill less than $500 over the year)
– ultra-low exterior maintenance
– BAL-29 rating (the house is close to a BAL-40 specification)
– Native garden
I used a sandwich concrete panel construction. While this contributes a massive 55000kg of CO2 emissions (a normal passenger vehicle emits about 4500kg of CO2 per year), it should be offset by the longevity of the material, rapid build (less builder travel), and solar passive performance (the average Australian household energy use generates 8000kg of CO2 emissions per year).
The house has an 8.7 star energy rating.

SUSTAINABLE FEATURES

Years Open
2020
ENERGY AND WATER EFFICIENT FEATURES
    • Energy efficiency:
    • Draught proofing
      Efficient lighting
      Efficient appliances
      Energy monitoring
    • Passive heating cooling:
    • Passive solar designed home
      Thermal mass
    • Active heating cooling:
    • Split system airconditioner
    • Water heating:
    • Hot water heat pump
      Water heated by PV system
    • Water harvesting and saving features:
    • Rainwater storage - Above ground
      Low flow shower heads
    • Average water consumption per day:
    • 50L
    • Above ground rainwater storage Type:
    • Steel water tank
    • Above ground rainwater storage Size
    • 22700L
    • Energy Efficient Lighting
    • LED lights throughout
      Natural daylight
    • Window Protection:
    • Eaves
INSULATION SPECIFICATIONS
    • Insulation Type:
    • Ceiling
      Internal walls
      External walls
      Floor
    • Ceiling Type:
    • Bulk – glass wool
    • Ceiling Rating:
    • R4.0 with R1.4 roof blanket
    • Floor Rating:
    • R2.0
    • Internal Walls Insulation Type:
    • Bulk – glass wool
    • Internal Walls Insulation Rating:
    • R2.0
    • External Walls Rating:
    • R1.7
RENEWABLE ENERGY SPECIFICATIONS
    • All-Electric Home?
    • Yes
    • Renewable energy used:
    • Solar PV grid connect
    • Size of PV system:
    • 3.89
    • Average Daily Energy Consumption:
    • 3kWh
COSTS AND COST SAVINGS
    • Total cost of home when constructed:
    • $350,000 including land
    • Estimate of annual savings:
    • $2000
HOUSE DESIGN SPECIFICATIONS
    • House Size
    • 67 m2 (internal floor space)
    • BAL Rating
    • BAL – 29: Increasing levels of ember attack and ignition of debris with a heat flux of up to 29kW/m2
    • Roof
    • Metal (Colorbond)
    • Wall Materials
    • Insulated panels or blocks

    • Wall Materials
    • Thermacell concrete sandwich panel
    • Window and Door Types
    • Awning
      Double glazing
      Low-e, films
      Sliding windows/doors
    • Universal design accessability
    • Multi-generational
    • Universal Design Features
    • 100cm minimum door opening width
      Minimum 110cm wide hallways
      No stairs/steps
      Pocket doors so that cabinet doors are out of the way
      Strong fittings like towel rails that can be used as hand rails
    • Number of bedrooms
    • 2
    • Number of bathrooms
    • 1
GARDEN AND WASTE REDUCTION
    • Garden / Outdoors
    • Local indigenous plants
      Native plants
    • Waste Reduction Practices:
    • Compost all food scraps
      Recycle
HEALTHY HOME FEATURES
    • Healthy home features
    • Airtight house design
      Carpet free - tiles/concrete/timber flooring throughout
      Natural light and ventilation
      Natural oil sealer/finishes

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