Category: Flow Through Steam Nozzles

The following assumptions are made: Consider the flow of steam through a nozzle, as shown in Fig. 6.2. Applying the energy equation to sections 1 and 2 at entrance and exit of nozzle, we have Usually c1 = 0, where (Δh)isen = h1 − h2 = isentropic enthalpy change, kJ/kg Figure 6.2 Flow through a nozzle 1 Flow of Steam Through the Nozzle Let pvn =…

Consider the flow of steam through a nozzle. Let ṁ = steady state mass flow rate of steam, kg/s    A = cross-sectional area of nozzle normal to the direction of steam flow at any section, m2    v = specific volume of steam at the same section, m3/kg    c = velocity of steam across the section, m/s Then for steady flow…

The steam nozzle is a passage of varying cross-section by means of which a part of the enthalpy of steam is converted into kinetic energy as the steam expands from a higher pressure to a lower pressure. Therefore, a nozzle is a device designed to increase the velocity of steam. Steam nozzles are of three…