Engineering, 07.08.2019 04:20 nightmarewade03
Asimple rankine cycle operates with water as the working fluid between the pressures of 4 mpa and 20 kpa. the fluid leaves the boiler at 550°c, the turbine efficiency is 89% and the fluid exits the condenser as saturated liquid. the flow rate is 81.5 kg/s and the pump efficiency is 52%. determine: a)- the net power output, in kw. b)- the rate of heat input in the boiler, in kw. c)- the rate of heat rejection in the condenser, in kw. d)- the overall efficiency of the bankine cycle engine.
Answers: 1
Engineering, 03.07.2019 15:10
Apiston-cylinder with a volume of 0.25 m3 holds 1 kg of air (r 0.287 k/kgk) at a temperature of 100 c. heat transfer to the cylinder causes an isothermal expansion of the piston until the volume triples. how much heat is added to the piston-cylinder?
Answers: 3
Engineering, 04.07.2019 18:10
Aflywheel accelerates for 5 seconds at 2 rad/s2 from a speed of 20 rpm. determine the total number of revolutions of the flywheel during the period of its acceleration. a.5.65 b.8.43 c. 723 d.6.86
Answers: 2
Engineering, 04.07.2019 18:10
Water at 70°f and streams enter the mixing chamber at the same mass flow rate, determine the temperature and the quality of the exiting stream. 0 psia is heated in a chamber by mixing it with saturated water vapor at 20 psia. if both streams enters the mixing chamber at the same mass flow rate, determine the temperature and the quality of the existing system.
Answers: 2
Engineering, 04.07.2019 18:10
Ifa component is made of two or more materials with different modulus of elasticity (e), it is called a composite member and we calculate the factor·n". mention the formula for calculating n". also, ifn> 1, explain what will happen to the 1. transformed.gi) ifn 1, what will happen to the material when transformed material when
Answers: 1
Asimple rankine cycle operates with water as the working fluid between the pressures of 4 mpa and 20...
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