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Description
Flashcards by Adam Collinge, updated more than 1 year ago
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Created by Adam Collinge
over 11 years ago
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| Question | Answer |
| Why are somethings called wasted heat? | Because they can't be used for anything useful |
| What is useful energy? | Concentrated energy |
| Can 'waste' energy ever be useful? | Yes |
| What happens when a device produces inefficient heat energy? | The heat is transferred to cooler surroundings, which then become warmer. As the heat is transferred the energy becomes less concentrated |
| What do heat exchangers do? | Reduce the amount of heat energy that is 'lost' |
| Can waste energy ever be useful? | Yes |
| How do heat exchangers work? | By pumping a cool fluid through the escaping heat. The temperature of this fluid rises as it gets heat energy. |
| What is the end result of a heat exchanger? | The heat energy ion the fluid can be converted into a form of useful energy- either in the original device or in another |
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