Engineering, 21.04.2020 03:16 RealSavage4Life

Instructions: Name and date on the top of each page. Show as many steps as possible to receive the most partial credit. Draw a circle or square around the answer of each part. Follow all instructions on the individual problems. Please help the grader understand and follow your work by showing as many steps as possible without crowded pages (use more than 1 sheet of paper).

1. A turbine in a steam power plant operates isentropically with an inlet pressure (P3) of 3.5 MPa and inlet temperature (73) of 600 C. The water exiting the turbine is at 50 kPa (P4). Model the steam power plant as an ideal Rankine cycle to evaluate the following:

a. What is the phase of water, enthalpy and entropy at state 3 (turbine inlet)?
b. What is the phase of water, enthalpy and entropy at state 4 (turbine exit)?
c. What is the intensive work output of the turbine with the assumptions above?
d. Assuming that the water is brought to the saturated liquid line in an isobaric condenser process, what is the intensive enthalpy and specific volume of the water after condensation (at state 1)?
e. What is the intensive amount of heat transferred in the condenser process?
f. After the condenser, a liquid pump raises the pressure to the boiler pressure (state 2, P2) where the liquid gets heated in an isobaric boiling process ending at state 3. What is the P2? Estimate the intensive work input into the pump. g. What is the intensive enthalpy at state

2. h. What is the intensive amount of heat transferred into the system during boiling (2-3)? i. What is the thermal efficiency of this steam power plant?

Answers: 2

Show answers

Another question on Engineering

Engineering, 03.07.2019 14:10

The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite

Answers: 3

Answer

Engineering, 04.07.2019 18:20

Select any two (2) areas of applications of chain-drive. (clo4) a)-permanent lubrication necessary b)-hydraulic forklift truck operation c)-rigging and heavy moving materials d)-relatively high maintenance costs e)-costlier than belt drives

Answers: 2

Answer

Engineering, 04.07.2019 19:10

With increases in magnification, which of the following occur? a. the field of view decreases. b. the ambient illumination decreases. c. the larger parts can be measured. d. the eyepiece must be raised.

Answers: 1

Answer

Engineering, 04.07.2019 19:20

Acommercial grade cubical freezer, 4 m on a side, has a composite wall consisting of an exterior sheet of 5.0-mm thick plain carbon steel (kst= 60.5 w/m k), an intermediate layer of 100-mm thick polyurethane insulation (kins 0.02 w/m k), and an inner sheet of 5.0- mm thick aluminium alloy (kal polyurethane insulation and both metallic sheets are each characterized by a thermal contact resistance of r 2.5 x 104 m2 k/w. (a) what is the steady-state cooling load that must be maintained by the refrigerator under conditions for which the outer and inner surface temperatures are 25°c and -5°c, respectively? (b) for power saving purpose, which wall material should be increased/reduced in. thickness in order to reduce 50% of the cooling load found in part (a)? redesign the thickness of the proposed material. 177 w/m-k). adhesive interfaces between the q=575.93 w

Answers: 2

Answer

You know the right answer?

Instructions: Name and date on the top of each page. Show as many steps as possible to receive the m...

Questions