Energy in the home

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4. Room heating :- 65%.

Think of other appliances and add them to the diagram.

Slide 10

Which fuel?

energy

We see from the pie chart and previous slides that :-

More than two thirds of energy is used for heating

and lighting.

This energy can come from coal , gas, or electricity.

The following table compares the cost of installing

and running the three different types of fuel.

Slide 11

Which fuel cont`d?

energy

2 Bedroom flat without cavity wall insulation

Solid fuel

Mains gas

electricity

installing

Running

Cost per

year

£1400

£1200

£800

£300

£240

£210

Slide 12

energy

which fuel cont`d?

Once you have copied the previous slide, copy and answer the

Following questions.

Which fuel is the cheapest to install?

Which fuel is the cheapest to use?

3. Which fuel would be least popular in flats? Why?

Slide 13

energy

which fuel cont`d?

Here are some things that people have said about different fuels.

I can switch

On the heat as

Soon as I come

In.

Its easy to use.

What about

Power?

Its dirty

What do I

Do with the

Ashes?

We`re not

It’s a

Very dry

Heat.

Its heavy

To carry.

It

smells

.

We`re not

On the

Mains.

Slide 14

energy

which fuel cont`d?

Fill in the table below to say which fuel each comment is about.

Solid fuel

Mains gas

electricity

Slide 15

Using electrical energy

energy

The table below shows how a family of four used their electricity

during one week.

Appliance Units

hair tongs 0.2

vacuum cleaner 1

toaster 1.5

fryer 2

kettle 3.5

freezer 7

T.V. 8

washing machine 9

cooker 20

oil filled radiator 50

water heater 65

Slide 16

Paying for electricity

energy

Use the information from the previous table to work out the cost

of your electricity bill for the week.The cost of one unit of

Electricity is about 7p.

How much does this work out for twelve weeks?

How much did they pay for the heat producing appliances?

Slide 17

Using electrical energy