1. You are to do a preliminary design study for a small
demonstration steam turbine power plant.
- Steam will be provided by a small steam generator fired by
natural gas. - Your system will take in steam at 30 bar
and 400 oC.
- The steam passes through a two stage turbine. At a pressure of 10
bars, the steam leaves the first stage of the turbine and will pass
through a reheat loop in the steam generator which will boost the
temperature back up to 400 oC at this pressure. The steam will then
enter the second stage of the turbine.
- When the steam leaves the turbine, the quality should be at least
95% at the turbine exit / condenser inlet.
- The design condenser pressure is 0.70
bar.
- Heat is removed from the condenser and rejected to the
environment through a cooling tower.
a) Assuming isentropic expansion, what are the temperature,
enthalpy, and entropy of the steam when it leaves the first stage
of the turbine? (5 pts)
b) What are the enthalpy and the entropy of the steam as it leaves
the reheater and enters the second stage of the turbine? How much
heat (kJ/kg) goes into the steam in the reheat process? (10
pts)
c) Based on an isentropic expansion, what will the quality be at
the exit? Will it meet this design limit? (10 pts)
For the following parts use the design turbine power output of 2.5
kW.
d) What mass flow rate is required? (10 pts)
e) At what rate must heat be produced by natural gas burners in the
steam generator to produce the steam at the turbine inlet, and how
much heat must be produced to reheat the steam between the stages?
For a heating rate range of 950-1150 BTU/scf and a cost of $8 per
100 cubic feet, what is the fuel cost per hour to run this unit?
(10 pts)
f) What is the feed water pump power demand, and what is the BWR?
(10 pts)
In: Mechanical Engineering
source: /** * A class to model an item (or set of items) in an * auction: a batch. */ public class BeerBatch { // A unique identifying number. private final int number; // A description of the batch. private String description; // The current highest offer for this batch. private Offer highestOffer; /** * Construct a BeerBatch, setting its number and description. * @param number The batch number. * @param description A description of this batch. */ public BeerBatch(int number, String description) { this.number = number; this.description = description; this.highestOffer = null; } /** * Attempt an offer for this batch. A successful offer * must have a value higher than any existing offer. * @param offer A new offer. * @return true if successful, false otherwise */ public boolean bidFor(Offer offer) { if(highestOffer == null) { // There is no previous bid. highestOffer = offer; return true; } else if(offer.getAmount() > highestOffer.getAmount()) { // The bid is better than the previous one. highestOffer = offer; return true; } else { // The bid is not better. return false; } } /** * @return A string representation of this batch's details. */ public String batchDetail() { return "TO DO"; } /** * @return The batch's number. */ public int getNumber() { return number; } /** * @return The batch's description. */ public String getDescription() { return description; } /** * @return The highest offer for this lot. * This could be null if there is * no current bid. */ public Offer getHighestOffer() { return highestOffer; } } Question: Implement the method batchDetail() in the BeerBatch class. Below you see the details of the first three batches created in the BearAuction constructor. For your string use the same format as below! 1: 1892 Traditional Bid: 14 by Juliet (female, 27) 2: Iceberg Lager No bid 3: Rhinegold Altbier Bid: 17 by William (male, 22).
In: Computer Science
Nickel metal will react with CO gas to form a compound called nickel tetracarbonyl (Ni(CO4)) which is gas at temperatures above ~45C.
A 1.50 L glass bulb is filled with CO gas to a pressure of 1.20 atm at 73C and then 0.5869 g is pure Ni is added. If the reaction described above occurs and goes to completion at constant temperature, what will the final total pressure in the bulb be?
In: Chemistry
In: Computer Science
In: Operations Management
what challenges leadership teams face? Provide Sources and examples.
In: Psychology
In what follows use any of the following tests/procedures: Regression, confidence intervals, one-sided t-test, or two-sided t-test. All the procedures should be done with 5% P-value or 95% confidence interval.
Use the Weight_vs_IQ data. SETUP: Common sense dictates that a person’s IQ and Weight should not be related. However, one never knows until one examines the data. Given the data (IQ and weight for 29 students) your job is to check if the common sense assumption is reasonable or maybe it is not.
13. What test/procedure did you perform?
14. What is the P-value/margin of error?
15. Statistical interpretation
16. Conclusion
DATA:
Weight IQ 88 99 112 103 107 97 112 99 80 100 86 90 103 118 121 79 116 80 82 88 65 82 107 103 100 116 91 112 110 92 113 115 105 100 108 94 90 118 73 106 102 126 99 95 80 119 114 116 90 79 95 92 106 78 86 111 106 80
In: Math
1. Consider the implications of two recent headlines: "Fiat Chrysler Shares Crash by a Fifth as it is Drawn into Emissions Scandal by US Regulators" and "FBI Arrests Volkswagen Executive emissions Scandal." it appears that Fiat Chrysler and Volkswagen not only failed to act responsibly to comply with emissions regulations but they also committed fraud to make government officials and the public believe they were in compliance. Do you think Fiat Chrysler and Volkswagen are regretting the decisions they made in the past to avoid compliance costs? What costs are they paying now?
2. "The single most important and pervasive moral obligation facing mankind is to ensure survival of a healthy planet for our grandchildren and theirs". Do you agree? Why or Why not?
In: Operations Management
Develop the presentation using your research of 5 Business Intelligence tools.
In: Operations Management
I have to create a light dispersion prism animation in Matlab. I need a well-explained Matlab script which works.
In: Computer Science
Given that smoking scenes in movies increase the positive image and intention to smoke among youth, what regulations, if any, should apply to this?
In: Operations Management
In: Nursing
1) What is the member initializer list used for? Give a code example of using one
2) Give two examples of when the copy constructor is called by the “compiler”.
3) What actions should be done in the destructor function? Give an example function header for the destructor for the Jedi class. When is the destructor called?
Thank you!
In: Computer Science
QUESTION TWO [18]
In many projects, the quantities of the types of resources available to perform the project activities are limited. Several activities may require the same resources at the same time, and there may not be sufficient resources available to satisfy all the demands. Resources can therefore constrain the schedule of a project.
With regard to this:
2.1 Explain what resource-constrained project planning is. (3)
2.2 Explain what is meant by resource levelling or smoothing. (3)
2.3 Describe why and when resource levelling or smoothing is used. (8)
2.4 Explain how resource levelling keeps a project on schedule. (4)
In: Operations Management
"The mitigation risk treatment strategy is the treatment approach that focuses on planning and preparation to reduce the impact or potential consequences An incident response plan he mitigation risk treatment strategy is the treatment approach that focuses on planning and preparation to reduce the impact or potential consequences of an incident or disaster." Incident Response is one of the four types of plans: Develop an incident response plan for an online retail site. The audience for this plan is the Board of Directors within the company.
In: Operations Management