DieselShip's Online Content Library

Q4. Steam at a pressure and temperature of 20 bar and 400℃, enters a convergent divergent nozzle with negligible velocity. The expansion is isentropic according to the law. PV^1.55 = c to a pressure of 5 bar. The nozzle throat diameter is 32.8 mm.

Calculate EACH of the following:

(a) The critical pressure; (3)

(b) The mass flow rate of steam through the nozzle; (5)

(c) The nozzle exit area. (8)

Note: for nozzle P_c =  P₁  (2/(k+1))^k/k-1