1. A pump is operating in a flow loop at nominal speed. We
now turn off the pump. Find the time it takes the impeller to reach half of its
nominal speed. Data: wo = 124 s-1, Io = 2200
slug-ft2, V= 85000 GPM, _o = 0.78, R = 0.076 ft-4,
_o = 38 lbm/ft3.
2. A natural circulation loop is shown in the figure. Verify
the validity of Equation VId.3.14. Assume that the thermal centers for the heat
source and heat sink, in this case, are located at the geometrical center of
each source. The vertical distance between the two sources is shown by Hth.
Elevations L1, L2, and L3 are given.