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matrenka [14]
2 years ago
10

A steady stream (1000 kg/hr) of air flows through a compressor, entering at (300 K, 0.1 MPa) and leaving at (425 K, 1 MPa). The

compressor has a cooling jacket where water flows at 1500 kg/hr and undergoes a 20K temperature rise. Assuming air is an ideal gas, calculate the work furnished by the compressor, and also determine the minimum work required for the same state change of air.

Engineering
1 answer:
AleksandrR [38]2 years ago
8 0

Answer:

The work furnished by the compressor is 69.77kJ/s

The minimum work required for the state to change is 55.26kW

Explanation:

The explanation to these solution is on the first, second , third and fourth uploaded image respectively

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A hawser is wrapped two full turns around a bollard. By exerting an 80-lb force on the free end of the hawser, a dockworker can
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Answer:

μ=0.329, 2.671 turns.

Explanation:

(a)   ln(T2/T1)=μβ         β=angle of contact in radians

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we have two full turns which makes total angle of contact=4π  radians

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(b) using the same relation as above we will now compute the angle of contact.

take greater tension as T2 and smaller as T1.

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divide the angle of contact by 2π to obtain number of turns.

16.7825/2π =2.671 turns

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Airbags will deploy in a head on collision but not in a collision that occurs from angle
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