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A SSOCIATION OF H YDRAULIC S ERVICES C ONSULTANTS A USTRALIA

A SSOCIATION OF H YDRAULIC S ERVICES C ONSULTANTS A USTRALIA. AHSCA and Sustainable Design.

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A SSOCIATION OF H YDRAULIC S ERVICES C ONSULTANTS A USTRALIA

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  1. ASSOCIATION OF HYDRAULIC SERVICES CONSULTANTS AUSTRALIA

  2. AHSCA and Sustainable Design The AHSCA is committed to assisting its members and the community in cultivating the ideas, processes and design standards to enable sustainability at all levels of Hydraulic Engineering in order to achieve the best and most sustainable engineering outcomes.

  3. The Design process and Sustainability Sustainable Design Decision Model Mendler, S. Odell, W. Lazarus, M A. (2006) The HOK Guide Book to Sustainable Designs. 2nd Edition. New Jersey: John Wiley & Sons, Inc.

  4. Drivers in the Australian Plumbing Design Industry High Impact / Importance Low Certain Uncertain Level of Uncertainty Sustainable Water Use. Travel and transport of people, goods and materials. Peak Water Peak Oil Climate Change. Cost of Crude Oil Transmission by water of newly-recognized pathogens and new strains of established pathogens. Carbon Trading. Water Trading. Power and Energy Politics. Financial Institutions Population Density. Global Warming effects on water health.(Dengue Fever, Blue Tongue) Increasing Urban Populations. ESG & CSR Reporting Legislation Natural Resources(Cost and Availability) Economics. Global Epidemic. Disposable Income(Driver affect affordability of products) Aging Population.

  5. Investment in CSR and ESG (Responsible Investment) Responsible Investment Association Australasia; Responsible Investment. October 2007. [Available on line: http://www.responsibleinvestment.org/files/78RUBP9VVA/RIAA%20Benchmark%20Report%202007%20FINAL.pdf] Viewed June 2008.

  6. Water and Energy • Water Efficiency is easy. • Sustainable Water Use is the challenge. • Plumbing Systems: • Comprise from 4% to 10% of the construction costs. • Manage 95% to 99% of the total water volume within the built environment. • While a lot of attention is given to “Energy” or CO2e and the issue of Water stewardship, the GHG emissions from wastewater streams is not. • The link between Water, Energy and CO2e is strong. • If we want to implement smart sustainable solutions, the solution is a suite of minimisation and adaptation strategies. • For something to be managed, it has to be measured or accounted for.

  7. Carbon and Water Accounting Material Embodied Energy(Raw Material Only) Embodied CO2e(Raw Material Only) Embodied Water(Raw Material Only) Concrete 0.42 MJ/kg 39.1 kg CO2e/kg 2 L/kg Steel 32 MJ/kg 2,970 kg CO2e/kg 40 L/kg Aluminium 201 MJ/kg 18,700 kg CO2e/kg 88 L/kg ABS 111 MJ/kg 10,330 kg CO2e/kg 185 L/kg PVC 70 MJ/kg 6,520 kg CO2e/kg 185 L/kg HDPE 103 MJ/kg 9,590 kg CO2e/kg 185 L/kg MDPE 103 MJ/kg 9,590 kg CO2e/kg 185 L/kg

  8. Scenario Pipe Type Energy to Pump Water Embodied Energy(Raw Material) Embodied Water(Raw Material) Embodied CO2e(Raw Material) Embodied CO2e in Power at Pump Motor Embodied Water in Power at Pump PVC-M 1.027 kW 438.3 GJ 1158 kL 40.8 t 12.2 kg 29.3 L PVC-U 1.125 kW 655.6 GJ 1733 kL 61.1 t 13.4 kg 32.1 L Difference 0.098 kW 217.3 GJ 574 kL 20.3 t 1.2 kg 2.8 L Scenario: 1000 m of PVC Pipe with a flow of 20 L/s for 8 hrs per day. Compare PVC-U and PVC-M.

  9. Pumping of water’s CO2e by State • Information based on: • Pump and driver efficiency of 70%. • National Greenhouse Accounts Factors, January 2008, (Table 5) Emission Factors for purchased electricity from the State grid.

  10. Fugitive GHG Emissions in Plumbing Systems Material Chemical Formula Global Warming Potentials (Horizons) 20 Years 100 Years 500 Years Carbon Dioxide CO2 1 1 1 Methane CH4 56 21 6.5 Nitrous Oxide N2O 280 310 170 Nitrification De-nitrification

  11. Plumbing Services Cycle Financial Institutions Legislators

  12. Where to from here? • Increased education in Sustainable Water Use, not just water efficiency. • Develop a framework to account for Embodied Water and CO2e along with GHG Emissions. • Manufacturing to develop rating system for embedded water and CO2e of their products. • Calculation of embodied water in construction.

  13. We’re in this together.

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