Engineering, 21.07.2020 18:01 hebiancao

An insulated open feedwater heater (mixing box) is used in a steam power plant to raise the temperature of the water going into the boiler which increases the thermal efficiency. The water exits the feedwater heater as a saturated liquid at P6 with a mass flow rate of m6. The two inlets to the feedwater heater are both at a pressure of P6 The first inlet has a temperature of T3 and second at a temperature of T5. Determine the following given the properties listed below. --Given Values P6 (Bar) = 5 m6 (kg/s) 66 T3 (C) 336 T5 (C) 95 1. Determine the specific enthalpy (kJ/kg) at the feedwater heater exit.
2. Determine h3, the specific enthalpy (kJ/kg) at the first feedwater heater inlet.
3. Determine h5, the specific enthalpy (kJ/kg) at the second feedwater heater inlet.
4. Determine m3, the mass flow rate (kg/s) at the first feedwater heater inlet.
5. Determine m5, the mass flow rate (kg/s) at the second feedwater heater inlet.

Answers: 1

Show answers

Another question on Engineering

Engineering, 04.07.2019 18:10

Slip occurs via two partial dislocations because of (a) the shorter path of the partial dislocation lines; (b) the lower energy state through partial dislocations; (c) the charge balance.

Answers: 1

Answer

Engineering, 04.07.2019 18:20

How much power could a wind turbine produce if it had the following specifications? cp = 0.45 -d=1.2kg/m3 d=50m v 5m/s

Answers: 2

Answer

Engineering, 04.07.2019 18:20

An open feedwater heater operates at steady state with liquid entering at inlet 1 with t? = 40°c and pl = 1 .2 mpa. water vapor att2-200°c and p2 = 1.2 mpa enters at inlet 2. saturated liquid water exits with a pressure of pa 1.2 mpa. neglect heat transfer with the surroundings and all kinetic and potential energy effects, determine the mass flow rate of steam at inlet 2 if the mass flow rate of liquid water at inlet 1 is given as 2 kg/s.

Answers: 3

Answer

Engineering, 04.07.2019 19:10

Afoot bridge is made as a simple deck, 4 m long, with a cross section 2 m (wide) and 20 cm thick, and made of wood. the deck is supported at the two ends. the maximum load allowable on the bridge is 10 tons, provided it is uniformly distributed on the deck. to sense this load, a strain gauge is placed at the center of the bridge and its resistance is monitored. if the sensor has a nominal resistance of 350 s2 and a gauge factor of 3.6, what is the reading of the strain gauge at maximum load? the modulus of elasticity for the wood used in the construction is 10 gpa.

Answers: 2

Answer

You know the right answer?

An insulated open feedwater heater (mixing box) is used in a steam power plant to raise the temperat...

Questions