Energy Analysis - Heating Flashcards
1
Q
How is energy transferred to or from a thermal store?
A
A temperature difference produce a transfer of energy from a hot object to a cold object until both objects are in equilibrium
2
Q
What is a storage heater?
A
Found in a house contain a large piece of concrete that heats up during the night and cools down during the day
3
Q
What is the energy analysis for a storage heater?
A
Point 1 (start of day) = high concrete thermal store, low room thermal store Point 2 (end of day) = low concrete thermal store, high room thermal store
4
Q
What is energy dissipation?
A
The transfer of energy to stores that aren’t useful
5
Q
What is lubrication?
A
using a lubricant eg. oil to reduce energy dissipation by friction
6
Q
What is insulation?
A
a material eg. foam that reduces energy dissipation by heating
