Apump is driven by a 2-kw motor with water at 150 kpa, 10 cesius entering. find the maximum water flow rate you can get with an exit pressure of 1 mpa and negligible kinetic energies. the exit flow goes through a small hole in a spray nozzle out to the atmosphere at 100 kpa. find the spray velocity.

42.4m/s

Explanation:

To develop the problem it is necessary to apply the concepts related to thermodynamic work and Bernoulli's principle in which the behavior is described of a liquid moving along a stream.

The work of an incomprehensible liquid is given by the equation,

Where,

= Mass flow

= Specific Volumen

P = Pressure

Our values are given by,

= 2kW

Table 1 for saturated water in 10°C

We need to find the mass flow, then re-arrange for

To find the Spray velocity, we apply Bernoulli equation, because at the Nozzle there is not Work or Heat transfer related. Then,

Therefore the spray velocity is 42.4m/s

radiation warms things up temp rises convection currents air circ windy weather

layers of the earth affect the waves and these effects are seen on instruiments such as seimometers