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Question:
An axial-flow compressor stage with hub and tip radii rh = 38 cm and rt = 61 cm is designed with the following data:
N = 6000 rpm,
ΔT0s = 19.5 K,
Cx = 137 m/s,
λ= 0.92,
Rm = 0.5.
Determine the flow angles at the hub, mean, and tip radii of both inlet and outlet of the rotor. Also calculate the degrees of reaction at both hub and tip.
Air, modeled as an ideal gas, is compresses at steady state from 1 bar, 300 K, to 5 bar, 500K, with 150 kW of power input. Heat transfer occurs at a rate of 20 kW from the air to cooling water circulating in a water jacket enclosing the compressor. N..
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Humans are able to control their heat production rate and heat loss rate to maintain a nearly constant core temperature of under a wide range of environmental conditions.
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