Answer:
Absolute pressure= 57 KPa
Explanation:
Given that
Vacuum gauge pressure = 35 KPa
Atmospheric pressure = 92 KPa
We know that
Absolute pressure=Atmospheric pressure + gauge pressure
But we should remember that Vacuum gauge pressure is also called negative gauge pressure.So when given that pressure is vacuum gauge then subtract gauge pressure from atmospheric pressure instead of addition.
So now by putting the values
Absolute pressure=Atmospheric pressure - Vacuum gauge pressure
Absolute pressure=92 - 35 KPa
Absolute pressure= 57 KPa
Answer:
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Explanation:
Answer:
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Answer:
Explanation:
Heat dissipated by 26 people per second
= 26 x 360 x 1000 / (60 x 60)
= 2600 J
Heat dissipated by bulbs per second
= 15 x 40
= 600 J
Heat dissipated by fans per second
200 J
Heat dissipated by air coming in
= 200 x 10 x 1000 / (60 x 60)
=555.55 J
Heat gain by walls
= 5000 x 1000 / (60 x 60)
= 1388.88 J
Total heat gain per second
= 2600 + 600+200+555.55
= 3955.55 J
Capacity of air-conditioner required
= 3955.55 J/s
= 3.9 kJ/s
= 3.9kW
= 4 kW