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Efficiency P1
Question | Answer |
---|---|
Why are low energy bulbs better than standard bulbs in some cases?(2) | • More efficient • More cost-effective |
Why might low energy bulbs not be better than standard bulbs in some cases? | More expensive |
How do heat exchangers work? | • Cool fluid pumped through escaping heat • Temperature of fluid rises as it gains energy • Heat energy then converted in to another useful form |
Give an example of a heat exchanger? | Waste energy radiating from car engine used to heat passengers in central heating |