A centrifugal radial water pump has the dimensions shown in Fig. P12.15. The volume rate of flow is 0.25 ft3 /s, and the absolute inlet velocity is directed radially outward. The angular velocity of the impeller is 960 rpm. The exit velocity as seen from a coordinate system attached to the impeller can be assumed to be tangent to the vane at its trailing edge. Calculate the power required to drive the pump.
Lecture 14: Thermodynamics Part 2 Objectives Key concepts o Energy, heat, and work all have the same dimension o Energy is a conserved quantity 1st law of thermodynamics o Energy has quality as well as quantity 2nd law of thermodynamics o Objects like rocks or working fluids have several forms of energy Internal energy, gravitational potential energy, kinetic energy o Calculate 5 types mechanical energy (work) o Formulate solution strategy by applying 1st law o Identify simple systems that violate the 1st law o Explain the effect of assumptions on the 1st law First law of thermodynamics Energy can be converted from one form to another, but total ene