Superheated vapor enters the turbine at 10 MPa, 480°C, and the condenser pressure is 7.5 kPa of a steam Rankine power cycle. Isentropic efficiencies of the turbine and pump are 84% and 73%, respectively. Determine for the cycle

a. Sketch the cycle of a T-s diagram. Indicate the isobars with their values and the values for temperature and entropy.

b. The heat transfer to the working fluid passing through the steam generator, in kJ per kg of steam flowing.

c. The thermal efficiency.

d. Compute the entropy generated by the turbine per unit of mas of steam flowing.

e. The heat transfer from the working fluid passing through the condenser to the cooling water, in kJ per kg of steam flowing. [Hint: this refers to the cooling tower]

A pump steadily delivers 8.94 kg/s of water at the conditions given below. Calculate the pump power (hp).

The rate of heat transfer from the pump to the surroundings is Q = 1.61 kW.

There are no changes in kinetic or potential energy.

Pump Inlet Temperature = 50^oC

Pump Inlet Pressure = 1.75 MPa

Pump Exit Temperature = 50^oC

Pump Exit Pressure = 4.17 MPa

The circular fin of diameter D=1mm and length L=25.4mm, made of copper (k=400 W/m.K), are used to enhance heat transfer from a surface that is maintained at temperature Tb=132 °C. and the rod has another end attached to a large surface which is maintained at Te= 0°C. The airflow through the rod surfaces is at T∞ = 0 °C with convection heat transfer coefficient h = 100 W/m2.K. (Hint: use table 3.4 in the lecture slides.)

(a) Express temperature T(x) along the fin and calculate the temperature at x=L/2. (5points)

(b) Determine the rate of heat transfer at the hot end of the fin (3 points) and calculate the fin effectiveness (2 points).

How to find the material kind from the young modulus? My young modulus is 21548.26 MPa. I dont know what table to look at.

discuss how analog signal is converted to a digital signal in an analog to digital (A/D) converter(ADC).you may use sketches to support your answer

Identify the risk factors associated with worker, job and workplace environment in the following industry and give recommendations for reducing the risk. (Mining industry)

(please don't write the answer in a paper)

a)(10%) What is the distinction between hypoeutectoid and hypereutectoid steels? b)(10%) For a 99.65 wt% Fe – 0.35 wt% C alloy at a temperature just below the eutectoid, determine the following: i.The fractions of total ferrite and cementite phases. ii.The fractions of the proeutectoid ferrite and pearlite. Sketch the microstructure. iii.The fraction of eutectoid ferrite.

How to design C-clamp

a)(10%) What is the distinction between hypoeutectoid and hypereutectoid steels? b)(10%) For a 99.65 wt% Fe – 0.35 wt% C alloy at a temperature just below the eutectoid, determine the following: i.The fractions of total ferrite and cementite phases. ii.The fractions of the proeutectoid ferrite and pearlite. Sketch the microstructure. iii.The fraction of eutectoid ferrite.

Explain all sensors and actuators of following robots in detail.

• IRB 14000 Dual-arm YuMi

• IRB 660

• IRB 910SC SCARA

• KR QUANTEC extra

• festo octopusgripper

• NASA PUFFER

• piaggio gita cargo bot

• honda E2-DR

• KR 3 AGILUS

2)a)(10%) Define the following terms: Phase, Microstructure, Solid solution, Metal forming, Annealing. b)(10%) 1060 steel heated to ? region slowly cool to just above eutectoid temperature. What phases/structures are present? What is the expected hardness, BHN for the 1060 steel after (OQ, AC and WQ)?

a)(5%) Briefly explain the difference between hardness and hardenability.b)(5%) What is the main difference between eutectic, eutectoid and peritectic reactions? c)(10%) A cylindrical piece of 5140 steel heated to γ region and OQ. If the hardness at the surface must be ≥ 35HRC, what is the maximum allowable dia.? Explain.

A single-effect evaporator generates a distillate product at a flow rate of 2 kg/s. The system operating temperatures are as follows: • The boiling temperature, Tb is 90 ºC. • The feed temperature, Tf, is 85 ºC. • The steam temperature, Ts, is 100 ºC. • Boiling Point Elevation is neglected. • The Temperature of cooling Water, Tcw, is 25 ºC.

Determine the heat transfer areas in the evaporator and the condenser, the thermal performance ratio, the flow rates of feed seawater and reject brine, and the flow rate of cooling seawater.

Assume that the specific heat of seawater is constant and equal to 4.2 kJ/kg.ºC, and assume the over all heat transfer coefficeint for evapporater and condenser is 2 kW/m2 .ºC ,and assume the salinity of the feed is 42,000 ppm and rejected brine salinity is 84,000 ppm.