A person living in a 4m x 5m x 5m room turns on a 100-W fan before

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A person living in a 4m x 5m x 5m room turns on a 100-W fan before he leaves the warm room at 100 kPa, 30oC, hoping that the room will be cooler when he comes back after 5 hours. Disregarding any heat transfer and using the PG model for air, determine.
The temperature he discovers when he comes back.
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