Engineering, 16.04.2020 02:06, Kiona3815

Consider an ideal Rankine cycle (i. e. processes in all 4 devices are internally reversible) with water as a working fluid. Saturated vapor enters the turbine at p1 = 14 MPa, and the condenser pressure is p2 = p3 = 8 kPa. Water exits the condenser (state 3) as saturated liquid. The mass flow rate of water/steam flowing through the power plant components is ˙ms = 120 kg/s. The cooling water passing through the condenser increases in temperature by ∆Tc = 20◦C. Determine: (a) the net power developed, W˙ t − W˙ p, in MW. (b) the rate of heat transfer to the steam passing through the boiler, Q˙ in, in MW. (c) the overall thermal efficiency η. (d) the mass flow rate of the cooling water passing through the condenser, ˙mc, in kg/s. You may model the cooling water as an incompressible substance with a constant specific heat of c = 4.18 kJ/kg·K

Answers: 1

Show answers

Other questions on the subject: Engineering

Engineering, 04.07.2019 18:10, niyawilliams23

Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10

Answers: 1

continue

Engineering, 04.07.2019 18:10, oliviasoreo92

Compute the pressure drop of 30°c air flowing with a mean velocity of 8 m/s in a circular sheet-metal duct 300 mm in diameter and 15 m long. use a friction factor, f 0.02, and pair = 1.1644 kg/m a. 37.26 pa b. 25.27 pa n c. 29.34 pa d. 30.52 pa

Answers: 1

continue

Engineering, 04.07.2019 18:10, QueenLife4869

Awall of 0.5m thickness is to be constructed from a material which has average thermal conductivity of 1.4 w/mk. the wall is to be insulated with a material having an average thermal conductivity of 0.35 w/mk so that heat loss per square meter shall not exceed 1450 w. assume inner wall surface temperature of 1200°c and outer surface temperature of the insulation to be 15°c. calculate the thickness of insulation required.

Answers: 3

continue

Engineering, 04.07.2019 18:20, miguel454545

Along 8-cm diameter steam pipe whose external surface temperature is 900c connects two buildings. the pipe is exposed to ambient air at 70c with a wind speed of 50 km/hr blowing across the pipe. determine the heat loss from the pipe per unit length. (b) air at 500c enters a section of a rectangular duct (15 cm x 20 cm) at an average velocity of 7 m/s. if the walls of the duct are maintained at 100c. a) the length of the tube for an exit temperature of the air to be 40 0c. b)the rate of heat transfer from the air. c) the fan power needed to overcome the pressure drop in this section of the duct.

Answers: 1

continue

Do you know the correct answer?

Consider an ideal Rankine cycle (i. e. processes in all 4 devices are internally reversible) with wa...