Science · 6 pages · 12 min
How a refrigerator moves heat
It does not make cold. It pumps heat from inside to outside.
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From the opening
A refrigerator cools the box by moving heat out of it. The coils on the back or underneath are warm because that is where the heat is dumped into the kitchen. The opening covers evaporation inside, condensation outside, why the back of the box is warm, and why an open door does not cool the room.
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Inside
- Evaporation inside, condensation outside
- Why the back of the box is warm
- Why an open door does not cool the room
- What insulation does and does not do
- Where the idea stops applying
- A distinction worth keeping
Sources
- The vapor-compression refrigeration cycle
- The first and second laws as they apply to household heat pumps