Water enters the constant 130-mm inside-diameter tubes of a boiler at 7 mpa and 65°c and leaves the tubes at 6 mpa and 450°c with a velocity of 80 m/s. calculate the velocity of the water at the tube inlet and the inlet volume flow rate. the specific volumes of water at the inlet and exit are 0.001017 m3/kg and 0.05217 m3/kg.

v_1 - 1.55 m/s

flow rate is  = 0.0206 m^3/s

Explanation:

Given data:

inside diameter is 130 mm

velocity v_2 = 80 m/s

specific volume

initial velocity can be calculated by equating mass flow rate at inlet and outlet point

inital flow rate is calculated as

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explanation: