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The past ten years has seen a significant increase in applying wind and solar power technologies from the domestic user to the corporate market. There has been a dramatic improvement in the efficiencies in these technologies and this has helped make the applications economical. Specific energy yields from wind turbines have increased by 60% and installation costs have dropped significantly (up to 50% in many cases). Global wind generating capacity has reached 100,000 MW capacity in March 2008 with almost 20,000 MW installed during 2007 alone. Applications of photovoltaic (PV) systems are growing rapidly worldwide with worldwide installation of PV modules skyrocketing to 2,826 MW in 2007 (= 62% growth from 2006). Many countries are passing legislation to enforce greater use of PV systems and this is helping to drive up the production of these systems. All of these technologies are interdisciplinary requiring a knowledge of topics as varied as aerodynamics, electricity and wind statistics for wind power and mechanical engineering, electronic and electrical engineering for solar power. This workshop will outline the step by step process of designing, installing and commissioning photovoltaic and wind powered systems. It should be emphasised that this is not an advanced in-depth workshop but one covering the important issues enabling you to do simple designs and then to investigate the design and installation issues in more detail after the workshop either by further study or in conjunction with experts in the field. In recent years the annual growth rate of the solar and wind energy industry has consistently exceeded 30% with 3 digit growth figures in many regional markets. So in these rather challenging economic times; this is a good industry in which to focus one’s career on. WHO SHOULD ATTEND? Control and instrumentation engineers Electrical engineers Electricians Electronic engineers Energy specialists Facility managers Mechanical engineers Technicians …and those who are keen to improve the environment and take advantage of cheap and clean power. MORE INFORMATION: http://www.idc-online.com/content/wind-solar-power-renewable-energy-technologies-3
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Technology Training that Works
Wind and Solar Power – Renewable Energy
Technologies
Technology Training that WorksTechnology Training that Workswww.idc-online.com/slideshare
Topics
• Energy : sources, forms, conversion of units
• Laws of thermodynamics
• Renewable and non renewable energy
• Economics of Renewable energy
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Energy
• The capacity to do work and overcome resistance
• Non-renewable energy resources
Coal, Oil and Natural Gas
• Renewable energy resources
Wind and Solar and others
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Forms of Energy
Mechanical energy
Gravitational energy
Electrical energy
Chemical energy
Thermal energy
Nuclear energy
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Heat
• Heat = thermal energy • can be converted into other forms of energy
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Conversion of units
1 kilo joule = 1 kilowatt-second
= 1 / 3600 kilowatt-hour
= 2.7 * 10 –4 kilowatt-hour
1000 kilo joule = (2.7 * 10 –4 ) * 1000
= 0.278 kWh
or:
1 kWh = 3.60 kj
Technology Training that WorksTechnology Training that Workswww.idc-online.com/slideshare
Laws of Thermodynamics
• First Law of Thermodynamics and Energy Conservation
Energy can neither be created nor destroyed
Whenever energy is transformed from one form to another, the total quantity of energy remains the same
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Energy Conversion Process
E1 + Qa – Qt = E2
– E1 - energy possessed by the system initially
– E2 - energy possessed by the system after the work is done
– Qa - energy added to the system
– Qt - energy taken away from the system
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Second Law of Thermodynamics
• Heat flows from a body at higher temperature to a body at lower
• Work has the tendency to convert into heat
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Renewable energy
• Energy, which is continuously replenished by natural processes on the earth
• Solar energy
• Wind energy
• Hydro energy incl. Tidal & Wave energy
• Biomass/Biogas
• Geothermal energy
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Non-renewable energy
• Energy resources with finite reserves,
that cannot be renewed within our lifetimes
- fossil fuels, e.g. oil, coal, natural gas
- Nuclear fuels, e.g. uranium
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Economics of scale
Example:
Capital cost (capex)
small to medium size
Wind Turbines
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EconomicsOperational Cost (Opex) versus Capital Cost (Capex)
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Economics
Payback period (in years)
Total Initial Cost
= -----------------------------------------------------
Annual Cost Savings - Annual Operating Cost
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Other economic factors
• Increase in energy costs relative to general inflation
• Interest paid on borrowed money
• Insurance cost
• PR opportunities
• Grid feed-in tariffs
• State and federal funding programs
• Assets resale value
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Driving Forces
• Reduced environmental impact
• Energy independence and diversification
• Inflation-proof fuel costs
• Direct + indirect costs of fossil fuels
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Cost of energy per kWh
Annual Cost = Capex/Service Life + Opex
typical Service Life 20 to 30 years (wind & solar)
•Step 1
•Step 2
Cost / kWh = Annual Cost / Annual Energy Output
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Energy Conservation
“the cheapest and cleanest
energy is the one
that we don’t use”
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DO YOU WANT TO KNOW MORE?
If you are interested in further training or information, please visit:
http://idc-online.com/slideshare
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