Closed Circuit Test Rig: Apparatus for determination of Cd, Cv of orifices and Cd of mouthpieces
a) Apparatus consists of an M.S. supply tank of size 0.3mx0.3m and 0.8m height with an inlet diffuser for damping flow oscillations, an overflow outlet, a gauge glass scale fitting, a drain cock and a provision for fixing interchangeable orifice plates and mouthpieces. A modified hook gauge with a suitable scale sliding apparatus is provided to measure the x-y trajectory of the jet. Two standard orifices of size 10mm. and 12mm and four mouthpieces with l/d = 2.5, and 4, Bourda mouthpiece, and converging diverging mouthpiece are provided for conducting the experiments. A stop watch and an M.S. collecting tank of size 45 liters. with a gauge glass scale fitting, a drain valve and a bend are provided to measure the flow rate.
b) A 220 volt AC, 0.5 HP, single phase monoblock ISI pumpset with suitable pipe fittings, strainer foot valve, and switch is provided to supply water to the test rig.
c) A sump tank of size 250 liters with suitable drain is provided to store the water. A strong iron stand fitted with wheels supports the complete test rig. The unit is moveable.
All tanks are provided with FRP lining for total rust protection