Compute the resulting pressure after a "real" diffuser in which the energy loss due to the enlargement is considered for the data presented in below Problem1. The enlargement is gradual with cone angles of (a) 60°, (b) 30°, and (c) 10°. Compare the results with those of Problems 1 and 2.
PROBLEM1:
Another term for an enlargement is a diffuser. A diffuser is used to convert kinetic energy (v2/2g) to pressure energy (p/γ). An ideal diffuser is one in which no energy losses occur and Bernoulli’s equation can be used to compute the pressure after the expansion. Compute the pressure after the expansion for an ideal diffuser for the flow of water at 20° C from a 1-in Type K copper tube to a 3-in Type K tube. The volume flow rate is 150 L/min and the pressure before the expansion is 500 kPa.
PROBLEM2:
Compute the resulting pressure after a "real" diffuser in which the energy loss due to the enlargement is considered for the data presented in above Problem1. The enlargement is sudden.
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