Suppose you require 4 m3/s of water with a salt content of 0.1 g/l for irrigation purposes. you have two reservoirs from which you can withdraw water. reservoir a has a salt concentration of 500 ppm and reservoir b has a salt concentration of 50 ppm. what flow rate should be pumped from each reservoir to meet the objective?

An engine runs on the ideal diesel cycle. the cycle has a compression ratio of 20 and a cutoff ratio of 2. the highest temperature in the cycle is 1200 k. if the heat into the system is 300 kj/kg of working fluid and using variable specific heats determine the work produced per mass of working fluid

Wiy doeres rere okhn a pump whon working betwon the same pressure range?

Air enters a horizontal, constant-diameter heating duct operating at steady state at 290 k, 1 bar, with a volumetric flow rate of 0.25 m°/s, and exits at 325 k, 0.95 bar. the flow area is 0.04 m2. assuming the ideal gas model with k = 1.4 for the air, determine (a) the velocity at the inlet and exit, each in m/s, and (c) the rate of heat transfer, in kw flow rate, in kg/s, (b) the mass kg 0.3