What is the steady flow energy equation for a nozzle?
[Solved] The steady flow energy equation: Q = m(h2 – h1) is app.
What is the equation of steady flow?
The steady flow energy equation for the WHB is(9.11)Mf2hf0+HP4=λ′D+HP′S,where 4 and S are the entry and exit states, P refers to products entering (i.e. at exit from the turbine), P′ refers to products after the supplementary combustion and Mf2hf0 is the enthalpy flux of the entering fuel.
Is a nozzle a steady flow device?
Nozzle. A nozzle is a steady state steady flow device to create a high velocity fluid stream at the expense of its pressure. It is contoured in an appropriate manner to expand the fluid to a lower pressure.
How do you derive steady flow energy equation?
1 Answer
- Since the steady flow process is that in which the condition of fluid flow within a control volume do not vary with time, i.e. the mass flow rate, pressure, volume, work and rate of heat transfer are not the function of time.
- i.e., for steady flow.
- (dm/dt)entrance = (dm/dt)exit ; i.e, dm/dt = constant.
Which one of the following is the steady flow energy equation for a boiler?
From Steady Flow Energy Equation (S.F.E.E.) For Nozzles and diffusers: Q = 0, as the nozzle is perfectly insulated, W = 0, no work is done by the nozzle, V1 <<< V2 and potential energy change is neglected….Steady Flow Energy Equation MCQ Question 2 Detailed Solution.
| Device | S.F.E.E |
|---|---|
| Boiler | Q = ṁ(h2 – h1) |
What is unsteady flow?
A flow in which quantity of liquid flowing per second is not constant, is called unsteady flow. Unsteady flow is a transient phenomenon. It may be in time become steady or zero flow. For. example when a valve is closed at the discharge end of the pipeline.
What is steady flow?
Definition of steady flow : a flow in which the velocity of the fluid at a particular fixed point does not change with time.
What is steady state steady flow?
Steady-state flow is defined as a flow condition under which the pressure at any point in the reservoir remains constant over time. This flow condition prevails when the pressure funnel shown in Fig. 3.1 has propagated to a constant-pressure boundary.
What is an example of steady flow?
steady: A steady flow is one in which the conditions (velocity, pressure and cross- section) may differ from point to point but DO NOT change with time. An example is the flow of water in a pipe of constant diameter at constant velocity.
What are the applications of steady flow energy equation?
The application of steady flow energy equation can be used to study the performance of many engineering devices that undergo thermodynamic processes, as these devices closely satisfy the conditions for steady flow processes.
Which of the following is correct in steady flow?
12. Which of the following is correct? Explanation: In case of a steady flow, the velocity at a point remains constant with time.
Which of the following is true for steady flow?
Which of the following is true for a steady flow system? Explanation: For a steady flow process, mass entering the system is equal to the mass leaving the system.
What does the steady flow energy equation tell us?
The steady flow energy equation tells us that if there is no heat or shaft work (the case for our adiabatic inlet) the stagnation enthalpy (and thus stagnation temperature for constant Cp) remains unchanged. Thus T T1 = T Tatm = T atm b) Is T 1 greater than, less than, or equal to T atm?
How does a nozzle work?
Nozzle is an engineering device which will accelerate the fluid and hence fluid velocity or kinetic energy of fluid will be increased while pressure of fluid will be reduced.
What is the first law of thermodynamics Chapter 6?
UNIFIED ENGINEERING Thermodynamics Chapter 6 STEADY FLOW ENERGY EQUATION First Law for a Control Volume (VW, S & B: Chapter 6) Frequently (especially for flow processes) it is most useful to express the First Law as a statement about ratesof heat and work, for a control volume.
What is the first law of enthalpy?
The first law relates the change in energy between states 1 and 2 to the difference between the heat added and the work done by the system. Frequently, however, we are interested only in the work that crosses the system boundary, not the volumetric or flow work. In this case it is most convenient to work with enthalpy.