Thames & Kosmos Green Engineering: Clean Energy & Sustainable Living handleiding

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Handleiding

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Summer sun

Heat distribution

Overhanging roof

Winter sun

South-facing

windows

North side

EXPERIMENT 6: SOLAR HEAT

Heating and Cooling

Heating with

sunlight

You will need

– Assembled model house

– Sunlight

Here’s how

1. Carefully place the house in direct sunlight

This could be a windowsill or a balcony table,

for example.

2. Turn the model house so that the sun

shines on the windows at the front.

Note the temperature shown by the

thermometer strip.

3. Leave the house in the sun for at least 30

minutes or longer.

4. Then, observe the thermometer

strip inside.

You can see a rise in temperature

on the thermometer strip. The

sun radiates solar energy,

which heats the interior of your

house through the window ﬁlm.

This allows you to save

electricity, as you don’t need to heat it much or at all. Depending on the

position of the sun, you can shift and rotate your model house so that it

receives the maximum amount of sunlight.

Of course, this isn’t possible with a real house: Therefore, a house that

wants to gain heat from the sun must be built in such a way that it

always receives the maximum amount of sunlight for its location. For

example, in temperate climates, the living and recreation rooms and

their windows might be oriented to the south, where they still receive

sucient sunlight even in winter. Stairs, storage rooms and the entrance

area can be on the north side, as people don’t spend as much time in

those areas and need less heat and light there.

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