Nozzle Energy Equation

There is no work done in nozzle therefore w 0.

Fuel nozzle of gas turbine. In the nozzle the velocity of the fluid is so high that there is hardly any time available for fluid to exchange heat with the surroundings. Q h in h out 05 c 2 in c 2 out 0. This article provides calculation methods for correlating design flow rate and pressure loss as a fluid passes through a nozzle or orifice.

So usually we need three equations to solve the problems related to nozzles and diffusers. Another necessary equation is the law of ideal gas. Nozzles and orifices are often used to deliberately reduce pressure restrict flow or to measure flow rate.

Considering the energy equation for the nozzle the specific total enthalpy ht is equal to the static enthalpy plus the square of the exit velocity divided by two. Apply the energy equation with q ws 0 between the reservoir and some location in the nozzle to obtain displaystyle c pcdot t o frac v 2 2c pcdot t. Let us consider the case of nozzle and let us write here the steady flow energy equation here heat energy transfer or work energy transfer across the system boundary will be zero and change in potential energy will also be zero.

The conservation of mass. The conservation of energy. The energy and continuity equations can take on particularly helpful forms for the steady uniform isentropic flow through the nozzle.

For a horizontal nozzle d pe 0.