Presentation on theme: "Sustainability Program for Community Housing Organisations Compass Housing Services This project has been assisted by the New South Wales Government through."— Presentation transcript:
Sustainability Program for Community Housing Organisations Compass Housing Services This project has been assisted by the New South Wales Government through its Energy Efficiency Training Program
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Course Contents Thermal performance Water Global Perspective Our precious planet, what’s happening? How energy comes into, around, and out of our homes Sources and distribution Usage and efficiency Appliances Case studies Understanding Energy Assessments of 2 homes in class Decisions, efficiency, actions Assessments and report work The results
Global Perspective Our precious planet, A Global Perspective. What’s the problem? A need for change? 21 slides 1 x 22 minute movie
Our planet The only one we’ve got Are we looking after it? In 1961, we humans used 62.% of global bio- capacity. pop 3 billion In 2010, humans are using 144% of global bio- capacity. Pop 6 billion Credit : NASA Earth Observatory
The balance sheet….. currently In 40 years global population will be around 9 billion Consider that: Many of the worlds populations aspire to live highly consumerist lifestyle, such as is modelled in US TV programs. The chart relates to the earth’s ability to maintain the natural systems which support life as we know it. Australia currently has a Global Deficit of 2-4 Planets according to the Happy Planet Index with an Ecological Footprint of 7.8 Hectares (gha) per person, that’s 2.8 times the average global footprint (2.7gha) After one look at this planet any visitor from outer space would say "I want to see the manager". William S. BurroughsWilliam S. Burroughs Credit: infographics
Behind the scenes 1. Coal from here goes around the world. It took the world about 4 billion years to store the Carbon Peak fossil fuels will likely run out before 2050* Coal Credit: Google Maps
Petroleum Credit: pelican post Credit: futurecars.com ‘My father rode a camel, I drive a car, my son flies in a jetliner, his son will ride a camel.’ - A Saudi saying
Hidden Costs to the Planet. Merbau / Kwila flooring and decking The shiny new things we buy here often hide a dark story of exploitation and environmental degradation. What do you think about the way that many products the ‘wealthy’ countries buy affect wildlife and indigenous people? We can choose to support only products that are ethically produced.
Cost of Waste earthhopenetwork.net Source: Greenpeace At least some of the waste gets recycled… But at what cost to people and the environment ?
Life cycle assessment. When it comes to energy, a whole of life cycle of a system needs to be considered. i.e. the GHG we generate when we run an air conditioner is only a portion of the total CO2 Discussion.. Q. What is the other part? A. Embodied energy
It seems like the problems are pretty big!?!....
Big problems have been fixed before …. The protective ozone layer was found to be diminishing, and then a giant hole developed in the ozone layer over the Southern Ocean, Antarctica. The Ozone layer protects all life from the bulk of (99%) UV radiation- that which causes sunburn and skin cancer. European space agency
Scientists identified the problem, the cause, and the solution. Scientists were originally ridiculed when they said man made chemicals were responsible Businesses and politicians eventually realised that there was a real and serious problem CFCs and HCFC chemicals were banned and now the ozone hole is shrinking, as the chemicals break down
Greenhouse gases- the major ones Are very common and very natural At original levels, they were perfectly OK Humanity has massively increased the amounts in the atmosphere Water vapour is the most common GHG
Greenhouse gases As coal fired power station output continues, CO2 levels are increasing rapidly
Rapid change in Global Energy Use The extremely fast rise in consumption of fossil fuel usage is having a big impact on the atmosphere. The vast majority of energy currently used releases carbon dioxide into the air. (The y axis refers to million tonnes of oil equivalent) Credit: manicore
Greenhouse gas and temperature change There is a direct correlation between increased carbon dioxide in the air, and global temperature rise..... When the CO2 and Methane levels increase the world gets hotter. Already we are seeing the changes.
Global temperature rise. Graph Credit: US EPA. Generally, there is no question amongst credible scientists that the global temperature is rising as a result of human activity As climate change occurs, water and food supply are likely to become much more uncertain in many areas.
Should we act sooner, or later? If the overwhelming majority of heart surgeons suggested you need a heart operation within a week... Would you delay taking action?
“If we do not change our direction we are likely to end up where we are headed for.” Chinese Proverb
Where we seem to be headed…. Sea level rise- millions of environmental refugees Species depletion- eg. Food support systems breaking down- starvation on an enormous scale. Extreme weather- drought/ flood Liquid fuel/ agricultural energy shortages/freight to cities food miles. Food becomes very expensive, and food supply inconsistent.
Take a deep breath. And relax.....because there are many things we can do to create positive change
Flow Rates Home Activity for Day 2 Items: Kitchen jug, with litres marked watch./ timer Turn on shower to normal flow rate. Catch the water in the jug for 10 seconds Measure litres Multiply by 6 to make up a minute = flow rate in litres/ minute