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ENERGY EFFICIENT PRODUCTS
Presented to:Mam Ayesha
Sir SajidPresented by:
Saira TariqSaddam Jan
Amna Shabbir
What is Energy Efficiency?
Using less energy Providing the same service
Examples
Using fluorescent bulbs or natural skylights instead of incandescent light bulbs.
Examples
Modern appliances, such as, freezers, ovens, stoves, dishwashers, and clothes washers and dryers, use significantly less energy than older appliances.
Energy efficient Icons
Motivations to improve energy efficiency
Reducing energy use reduces energy costs Financial cost saving to consumers Reduces carbon dioxide Improves energy efficiency in buildingsImproves industrial processes and transportationHelps control global emissions of greenhouse
gases.
Reduces energy costs
Financial cost saving
Reduces carbon dioxide
Energy efficiency in buildings
How to improve
Tight building design includes energy efficient window, well-sealed doors, additional thermal insulation of walls can reduce heat lose 25-50%.
Dark roofsGreen building design
Industrial processes
Ways to improve:
Generate steam through heat produced during production of electricity
Co-generation converts up to 90% of the fuel into usable energy
Advance furnaces can operate at higher temperature using less fuel
Better process control and better maintenance practices
Improved transportation
Ways to improve?
Improved aerodynamics of vehiclesReduce weight by using composite
materialsMore advanced tiresReplacing a clogged air filter can improve
a car fuel consumption up to 10%Energy efficient vehicles may reach twice
the fuel efficiency of the average automobile.
Energy efficient vehicle
For e.g. Mercedes Benz Bionic is the latest design approved which provides 84% of fuel efficiency.
Emissions of greenhouse gases
Sustainable energy policy
Energy efficiency and renewable energy are said to be the twin pillars of sustainable energy policy and are high priorities in the sustainable energy hierarchy.
Renewable energy
Any energy resource that is naturally regenerated over a short time scale and derived directly from the sunlight, wind, rain, tides, waves and geothermal heat.
Renewable energy
Renewable energy
Sustainable energy
Energy that is produced using the sun,
wind, etc., or from crops, rather than using fuels such as oil or coal
Sustainable energy
Basics of Energy Use
Energy is a part of everything we do.
Efficiency of Energy Conversion
If we are more efficient with the energy we already have there will be less pollution, less reliance on foreign oil and increased domestic security.
Less reliance on foreign oil
Less pollution
Energy efficiency
Illustration
An electric motor consumes 100 watts (a joule per second (J/s)) of power to obtain 90 watts of mechanical power. Determine its efficiency ?
= 90 W x 100 = 90 % 100 W
InputEnergyTotalOutputEnergyUsefulEfficiency
Vehicle Efficiency – Gasoline Engine
25% Of the gasoline is used to propel a car, the rest is “lost” as heat. i.e an efficiency of 0.25
Energy-efficient products
Products/appliances can account for up to 30 per cent of your home energy use. As our reliance on products/appliances increases and energy prices are also on the rise, choosing energy-efficient appliances becomes more important. The national standards for energy efficiency are improving the environmental performance of appliances all the time, so upgrading to a more efficient appliance can save you energy and money.
Energy Efficient Products
It's not only about having the right product—how you use appliances in your home can make a big difference. For example washing your clothes with warm water can save up to 10 times more energy than a cold wash
WHAT IS YOUR AVERAGE MONTHLY ENERGY BILL?
Heating and cooling costs the average homeowner about $1,000 per year – nearly half the home’s total annual energy bill. Depending on where you live, replacing your old heating and cooling equipment with energy efficient products can cut your annual energy bill by more than $200.
Think long term.
Many of the most energy-efficient products cost more initially, but they'll save you money in the long run. Expect to keep most major appliances between 10 and 20 years.
A more efficient appliance soon pays for itself; lower monthly utility bills over the lifetime of the appliance will more than offset a higher purchase price.
Think long term.
In addition, the latest resource-efficient clothes washers and dishwashers not only save electricity, they also use a lot less water and can reduce your water bill.