Recall that the Bernoulli equation, which is derived under assumption of isentropic flow, represents a form of mechanical energy balance (i. e. a statement of energy conservation) and can be derived from either Navier-Stokes or from thermodynamics. Under the assumptions below, derive the Bernoulli equation using the First and Second Laws of thermodynamics and Gibbs equations. a. steady state flow
b. incompressible flow
c. No work
d. Adiabatic
e. Reversible process
f. Δz = 0

Discuss the main difference using the two methods to derive the Bernoulli equation in terms of what additional assumptions are required.

Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.

On a average work day more than work place firs are reorted

An electrical motor raises a 50kg load at a construct velencity .calculate the power of the motor, if it takes 40sec to raise the load through a height of 24m(take g =9.8n/g)