Heat Loss
Heat loss
Have you ever wondered how a flask works?
Heat Loss
If you put something hot into a flask it will stay hot.
Heat Loss
If you put something cold into a flask it will stay cold.
Heat loss
The flask can do this because it is insulated.
Heat loss
Insulation means that heat can not easily move in or out of the flask.
Heat Loss
Heat moves from one place to another by three processes, convection, conduction and radiation.
Heat Loss
Insulation makes our homes and schools more efficient.
Heat Loss
A well insulated building needs less energy to heat it in winter or cool it summer.
Heat Loss
Insulation materials like glass fibre will reduce heat losses from conduction.
Heat Loss
Draught proofing reduces heat losses from convection.
Heat Loss
The silver foil on insulation reduces heat losses from radiation.
Heat Loss
Insulation is the most effective way of reducing the carbon footprint of a building.
Activities
Experiment 1
Design an experiment to measure the heat loss from a beaker of warm water over time
Experiment 1
Plot a graph of your results. Comment on your graph.
Experiment 2
Design an experiment to compare different types of insulation.
Activity
Look at this thermal image of a house.
Where is the most heat being lost.