Table of Contents
What do you understand by flow through the nozzle?
Definition of flow nozzle : a tapered length of tube that causes a fall of pressure head in a liquid flowing through it from which the rate can be calculated.
What is the effect of friction on the flow through a steam nozzle?
in case of nozzle, friction will decrease the motion of flow, that is friction will decrease the velocity of floor. as a result, actual velocity of flow would be less than theoretical velocity of flow through nozzle.
How is nozzle flow measured?
When a flow nozzle is placed in a pipe carrying whose rate of flow is to be measured, the flow nozzle causes a pressure drop which varies with the flow rate. This pressure drop is measured using a differential pressure sensor and when calibrated this pressure becomes a measure of flow rate.
What is supersaturated flow?
The steam in such a set of conditions, is said to be supersaturated or in metastable state. It is also called super cooled steam ,as its temperature at any pressure is less than the saturation temperature corresponding to the pressure.
What are the effects of friction in a nozzle explain?
As the friction in the nozzle slows down the flow of steam in it, the mass flow rate also decreases due to nozzle friction.
How do you measure supersaturation?
The degree of supersaturation is computed from the solubility difference at the temperatures of the salt solution and the sensor. The performance of the proposed system of the supersaturation measurement is examined by applying the system to the crystallization of three different salt solutions.
What is supersaturated flow on steam nozzles?
Write short note on Supersaturated Flow on steam nozzles. E. Expert. Supersaturated Flow is also called as metastable flow. When the supersaturated steam gets expanded in the nozzle the condensation occurs in the nozzle. As, the steam has a greater velocity, the condensation does not take place at the estimated rate.
Supersaturated Flow is also called as metastable flow. When the supersaturated steam gets expanded in the nozzle the condensation occurs in the nozzle. As, the steam has a greater velocity, the condensation does not take place at the estimated rate.
What causes steam to expand in a nozzle?
When dry and saturated steam is caused to expand in a nozzle,the actual measured steam flow is found to be greater than the theoretical calculated flow.This is due to the time lag in the condensation of steam & the steam remains in dry state instead of wet.
What is the back pressure of a nozzle?
The pressure, at which the steam leaves the nozzle, is known as back pressure. o No heat is supplied or rejected by the steam during flow through a nozzle. Therefore, it is considered as isentropic flow, and the corresponding expansion is considered as an isentropic expansion.