Engineering, 30.08.2019 18:10, sethhdoty
An office building is served by an air-cooled chiller currently operating at 115 tons (404.5 kw). the measured chilled water supply temperature is 43°f (6.1°c), and the measured chilled water return temperature is 57°f (13.9°c). what is the estimated chilled water flow rate through the chiller? a. 172 gpm (10.9 l/s) b. 197 gpm (12.4 l/s) c. 212 gpm (13.4 l/s)
Answers: 1
Engineering, 04.07.2019 18:10, tjeffers90028
Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at -26°c with a volumetric flow rate of 0.18 m3/s. refrigerant exits at 9 bar, 70°c. changes in kinetic and potential energy from inlet to exit can be ignored. determine the volumetric flow rate at the exit, in m3/s, and the compressor power, in kw.
Answers: 1
Engineering, 04.07.2019 18:20, krojas015
Asolid cylinder is concentric with a straight pipe. the cylinder is 0.5 m long and has an outside diameter of 8 cm. the pipe has an inside diameter of 8.5 cm. the annulus between the cylinder ad the pipe contains stationary oil. the oil has a specific gravity of 0.92 and a kinematic viscosity of 5.57 x 10-4 m2/s. most nearly, what is the force needed to move the cylinder along the pipe at a constant velocity of 1 m/s?
Answers: 3
Engineering, 04.07.2019 18:20, samueltaye
Modern high speed trains do not have perpendicular expansion gaps where rails are joined end-to-end any more they are mostly welded together but what might happen if there was a spell of particularly hot weather that causes inspection of the tracks?
Answers: 1
An office building is served by an air-cooled chiller currently operating at 115 tons (404.5 kw). th...
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