TYPES OF ENERGY STORE - examples explained

(g) Thermal energy stores

 This page will help you answer questions such as ...  What is a thermal energy store?   Can you describe examples of a thermal energy store?   How can you increase the thermal energy content of a thermal energy store?

Thermal energy and thermal energy stores

• All objects above -273^oC (O K) have thermal energy, if not a lot at very low temperatures!

• The hotter an object, the more thermal/thermal energy the material contains/holds/stores and hot objects can release thermal energy to cooler surroundings.

• Thermal energy can only move from a higher temperature material to a lower temperature material - there must be a negative temperature gradient for a net flow of thermal energy.

• Thermal energy is due to the vibration of atoms in solids or the kinetic energy of particle movement in liquids or gases.

  • Thermal energy - 'heat', is all about the kinetic energy of individual atoms or molecules.

• Thermal energy from a thermal energy store can only flow from a higher temperature region to a lower temperature region ie from hot objects to cold objects.

• Increasing an objects temperature increases its thermal energy store.

• The increase in the thermal energy store is proportional to the rise in temperature.

• For detailed examples of energy store conversions see ...

• Types of energy & stores - examples compared/explained, calculations of mechanical work done and power

• and Introduction to heat transfer - conduction (and thermal conductivity), convection and radiation GCSE physics notes

• and Specific heat capacity: how to determine it, use of data, calculations and thermal energy stores

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