Find a value of Capacitors and Resistors and make a circuit by Pspice
Consider the following generic, simple half-cell reaction at the anode of a fuel cell:Anode: R ? PThen the Butler–Volmer equation for this reaction is(a) If the concentrations of the reactant ( ) and product () species at zero current density (or equilibrium) are not equal to the reference concentrations ( and ), find the activation overvoltage of the anode at equilibrium.
Ali is a fresh graduate of Chemical Engineering and is currently working in a consultancy firm. His supervisor assigns a new task for him to design a reactor that can produce 1,000metric tons of biodiesel per month. Without providing any detailed information, his supervisor requests him to propose a draft of the design within 2 weeks. By referring to the textbook and notes that he used during his undergraduate study, he starts to realize that he actually needs more information such as the production process, the type of reactor, reaction rate law, specific reaction rate constant, conversion, etc. before he can proceed with the reactordesign!I If you were Ali, discuss how and what you should do to solve the problem and complete the task.
A coal-fired steam power plant operates on the ideal Rankine
cycle. Feedwater from the condenser at P1 = 10 kPa is pumped to the
boiler at P2 = P3 = 20 MPa, where it is superheated and exits the
boiler at T3 = 550 °C.
The moisture content in the turbine is not to exceed 12% (i.e.
steam quality is to be maintained above x = 0.88 throughout the
turbine). Up to two reheat stages can be added to the steam cycle
to satisfy this requirement. If needed, one stage can be added to
reheat the steam to T5 = 525 °C at P4 = P5 = 10 MPa. If more
reheating is required, a second stage can be added to reheat the
steam to T7 = 500 °C at P6 = P7 = 2.5 MPa. (There is a process diagram for single reheat in the attached file.)
a. How many reheat stages are required for this power plant (no
reheat, single reheat, or double reheat)? Provide claculations in support of the answer.
(1) -> pump–>
(2) -> boiler–> (3) -> turbine–> (4)
->boiler–> (5)-> turine–> (6)–> (possible extra
stages) -> condenser> – not so sure if this is the right answer to the question.
b. What is the thermal efficiency ? th of the power cycle?
c. Determine the annual emission of sulfur dioxide, mSO2, in
metric tons, from this power plant, if the net generating capacity
of the plant is 600 MW, and the boiler is 88% efficient in
transferring combustion heat into the feedwater superheat and steam
reheat stages. The boiler burns, to completion, a coal that has a
heating value of 22,800 kJ/kg and contains 0.46 wt% sulfur.
Assume that all of the sulfur content of the coal is emitted as
SO2 in the combustion flue gas, and that the coal-burning plant has
a capacity factor of 0.85; i.e. the boiler is operational for 85%
of the hours in one calendar year. (1 metric ton = 1000 kg)
Q1 -If the total pressure of moist air is 100 kPa (approximately atmospheric) and the humidity is measured as 0.03 kg kg-1, calculate the partial pressure of the water vapour. Q-2If the air in Example 7.5 is at 60°C, calculate the relative humidity.
A structure is modeled as a damped spring-mass system with weight 2500 Ib, k= 90,000 Ib/in and c = 112 Ib.sec/in is subjected to a harmonic force F(t) = F sin w t.
A truss is subjected to the forces as shown in the fig, find the sum of moments of the forces about point A
Investigate Kent Beck’s 3X theory – explore, expand, extract. To what extent are “explore” and “extract” alternative ways of thinking about CASM’s crafted quality and controlled quality which lie at the ends of the band of feasibility? And if they do map well, how would one handle the “expand” stage as a transition from CrQ to CoQ?
Consider a wind turbine located in Evansville, with rotor diameter of 37m, an angular velocity of 1.5 rad/s, and CD/CL=0.01. Create a plot that shows how the predicted coefficient of power varies with number of turbine blades. Include prediction lines for two, three, four, and five blades on one plot. Provide a sample calculation for 3 blades. Compare the predicted power production to the theoretical limit of power production for a wind turbine in Evansville
Read the article “Grit: Perseverance and Passion for Long-Term Goals”. Provide an opinion paper about this article. Please elaborate and substantiate your opinion. Limit the response to 1-2 pages, single-spaced font size 11.