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.