“Cogeneration Power Plants: Performance & Enhancement”
Four power plants with a total installed capacity of over 2000 MW are owned by one of Bahrain’s largest power producing companies. One of the power plants uses a mixed cycle with five gas turbines and one steam turbine. They recently upgraded the steam turbine unit by installing a new feedwater heater, and they want to explore how it affects the thermal efficiency of the entire plant. The steam turbine was last upgraded a decade ago, and the manager must present the new steam turbine system and demonstrate that the plant update was successful with all relevant information.
Consider any appropriate and relevant power plant of this type in Bahrain, and conduct some research on many technical characteristics available for this analysis. After graduating from Bahrain Polytechnic with a degree in Mechanical Engineering, you will be given the opportunity to work as an engineer for this company. Your line manager will assign this case study to you as a trainee to analyze the scenario of upgrading the existing system to a new cogeneration power plant that generates power using a combination of the Rankine cycle and the Brayton cycle. It would be really appreciated if you could provide a new design for the entire system in order to increase the plant’s efficiency.
The following are the two stages of analysis in this case study:
Figure 1: Cogeneration Power plant
Cogeneration Power Plant:
One of the future new communities in Bahrain that is currently under development plans utilise process heating and generate electricity for the community. Cogeneration, in general, is a process that produces multiple useful forms of energy from a single energy source. As a result, any power plant that uses this method is known as a Cogeneration Power Plant (CPP) or a Combined Heat and Power (CHP) plant. Due to unusual changes, such as quick increases in fuel prices and the potential energy-efficiency of the Process Heating System, the usage of process heat is on the rise in many nations (PHS). This case study aims to analyze a Cogeneration Power Plant, which generates both process heat and electric power from a single energy source. In a cogeneration power plant, the power cycle can be a Rankine cycle, a Brayton cycle, or a combination of the two. The utilization factor of a cogeneration power plant is defined as the fraction of energy used for either process heat or power generation, as shown in the following equation. Figure 2 depicts a typical steam turbine in use at this cogeneration plant right now.
Figure 2: Model steam turbine for combined power cycle
Technical information given:
The following information was provided by the responsible engineer of that power plant regarding the steam cycle part:
tonnes per hour of superheated steam enters the high-pressure turbine at oC and Bar, and is discharged isentropically until the pressure reaches Bar. After exiting the high-pressure turbine, tonnes per hour of steam is extracted to the open feedwater heater, and the remaining steam flows to the low-pressure turbine, where it expands to Bar. At the condenser, the steam is totally condensed. The temperature at the condenser’s outflow is the same as the saturation temperature at the same pressure. The liquid is compressed to Bar after passing through the condenser and then allowed to flow through the mixing preheater (a heat exchanger with efficiency )where it is completely condensed. The preheated feed water will be fed into the heat exchanger through a second feed pump, where it will be heated and superheated to a temperature of oC. In the winter, the overall process heating demand is assumed to be MW while this power plant’s electricity demand is MW.
Data to be taken for the analysis:
Assume any value in the range provided in the following parameter against the parameter:
|10 to 15 (step of 1)|
|1.0 to 1.5 (step of 0.1)|
|450 to 550 (step of 10)|
|20 to 30 (step of 2)|
|4 to 6 (step of 0.5)|
|0.4 to 1.0 (step of 0.1)|
|82% to 88% (step of 1)|
|1.2 MW to 2.2 MW (step of 0.2)|
|5.5 MW to 6.5 MW (step of 0.25)|
Project Report layout and Marking schedule (40%)
You must prepare a report, that include the following, with the analysis of the existing power plant and provide new design for its performance upgradation.:
LO-wise evaluation criteria:
|Summary (Max: 5 marks for each LO)|
|Assumptions (Max: 5 marks for each LO)|
|Introduction (Max: 10 marks for each LO)|
|Theoretical Aspects & Analysis (Max: 20 marks for each LO)|
|Schematic of the power plant (Max: 5 marks for each LO)|
|Property Diagrams (Max: 5 marks for each LO)|
|Results & Discussion (Max: 20 marks for each LO)|
|Conclusions & Recommendations (Max: 10 marks for each LO)|
|Analysis of the Technical Difficulties (Max: 10 marks for each LO)|
|Use of high-quality references (Max: 10 marks for each LO)|
|LO-wise total marks obtained:|
|Maximum Marks per LO:||100||100||100||100|
|Total obtained marks:|
|5%||5.0 – 4.5||4.0 – 3.0||2.5 – 1.5||1.0 – 0.0|
|10%||10.0 – 8.5||8.0 – 7.0||6.5 – 6.0||5.0 – 0.0|
|20%||20.0 – 18.0||17.0 – 11.0||10.0 – 6.0||5.0 – 0.0|
|EN8912 Applied Thermodynamics Project Rubric 2021B (40% of Final Grade)|
[LO: 1,2,3,4] 5%
|Specific and detailed description of the project; All the main objectives, findings and conclusions identified very clearly; All the main industrial applications of the project are presented;||Description of project with some detail; Most of the main objectives, findings, conclusions and industrial applications identified very clearly;||Lacks detail; Some reference to the main objectives, findings and conclusions; Only a few industrial applications of the project are presented;||Description incomplete with little or no detail; Little or no reference to objectives, findings and conclusions; Poor reference to industrial application;|
[LO: 1,2,3,4] 5%
|Not only identifies and evaluates all the important assumptions, but also some of the more hidden and abstract ones;||Identifies and evaluates all the important assumptions, but not the ones deeper in the background – the more abstract ones;||Identifies some of the most important assumptions but does not evaluate them for plausibility or clarity;||Fails to identify and evaluate any of the important assumptions behind the claims and recommendations made;|
[LO: 1,2,3,4] 10%
|Clearly indicates the main purpose of the project and a summary of the report, so the reader can anticipate the text that will follow; Narrative integrates critical and logical details from the peer-reviewed theoretical and research literature;||Adequately indicates the main purpose of the project and a summary of the report; Key constructs and variables were connected to relevant, reliable theoretical and research literature;||Although a research issue is identified, the statement is too broad or the description fails to establish the importance of the problem area; Connections to the literature are unclear or limited;||Statement of the problem, significance, definitions were omitted or inappropriate; The reader cannot anticipate the text that will follow; The review of literature was missing or consisted of non-research-based articles;|
|4||Theoretical Aspects & Analysis
[LO: 1,2,3,4] 20%
|Detailed and specific analysis of the problem; Well-developed main points directly related to the project; Clearly indicates the methodology steps and requirements with details;||Adequately analyzes the problem and indicates the methodology steps and requirements; Most of the main points are related to the project;||Detailed and specific analysis of the project; Well-developed main points directly related to the project; Clearly indicates the methodology steps and requirements with details;||Poor development of ideas; Little or no reference to methodology steps and requirements of the project;
|5||Schematic of the Plant
[LO: 1,2,3,4] 5%
|A very good and excellent quality schematic shown with all the required and appropriate information data relevant to the content;||An adequate schematic has been shown including all the required and appropriate information data relevant to the content;||Schematic provided is somewhat effective that includes only data relevant to the content;||No schematic has been shown;|
[LO: 1,2,3,4] 5%
|A very clear diagrams have been shown including all the required and appropriate information data;||Adequate diagrams have been shown including all the required and appropriate information data relevant to the content;||Diagrams provided are somewhat effective that include only data relevant to the content;||No diagram has been shown;|
|7||Results and Discussion
[LO: 1,2,3,4] 20%
|All information is accurately reported using appropriate terminology/graphs/tables etc.; Analysis of results is clearly explained, and demonstrates superior understanding of the project; Well organized / presented;||The analysis of results is adequately explained; All information is reported using appropriate terminology/graphs/tables etc.; Well organized and properly formatted and error free;||Results partly answer the project tasks; Only a few information is reported using appropriate terminology/graphs/tables etc.; Some degree of organization; Proper formatting and relatively error free;||Incorrect or no information on appropriate terminology/graphs/tables etc. provided; Analysis of results is poorly discussed; Poor organization and formatting;|
|8||Conclusions and Recommendations
[LO: 1,2,3,4] 10%
|The conclusions are clearly stated, highlight all the main points made throughout the report and consistent with the evidence presented; Most of the suggestions and recommendations provided are very clear;||The conclusions are clearly stated, highlight all the main points made throughout the report and consistent enough with the evidence presented; Most of the suggestions and recommendations provided are adequate;||Only some conclusions highlight only a few main points of the report and are consistent with the evidence presented; Only some recommendations and suggestions are consistent with the evidence presented;||Incomplete conclusions; No or poor suggestions or recommendations for future activities presented;|
|9||Analysis of the Technical Difficulties
[LO: 1,2,3,4] 10%
|Detailed and specific analysis with well-developed points on technical difficulties have been presented and directly related to the case study;||Adequately analyzes the technical difficulties; Most of the main points and references are covered;||The analysis of the technical difficulties was incomplete; Only some reference provided;||Incomplete or no detailed and specific analysis on technical difficulties has been presented;|
|10||Use of High-Quality References
[LO: 1,2,3,4] 10%
|Compelling evidence from professionally legitimate sources is given to support claims; Attribution is clear and fairly represented; References are primarily peer reviewed professional journals or other approved sources;||Professionally legitimate sources that support claims are generally present; Attribution is, for the most part, clear and fairly represented; Although most of the references are professionally legitimate, a few are questionable;||Although attributions are occasionally given, many statements seem unsubstantiated; Most of the references are from sources that are not peer reviewed and have uncertain reliability; The reader is confused about the source of information and ideas;||References are seldom cited to support statements; There are virtually no sources that are professionally reliable;|
|Weightings per LO||LO–1 (Max: 100)||LO–2 (Max: 100)||LO–3 (Max: 100)||LO–4 (Max: 100)||Total (Max: 400)|
|Marks per LO|
|Total (Max: 40)|
Why Work with Us
Top Quality and Well-Researched Papers
We always make sure that writers follow all your instructions precisely. You can choose your academic level: high school, college/university or professional, and we will assign a writer who has a respective degree.
Professional and Experienced Academic Writers
We have a team of professional writers with experience in academic and business writing. Many are native speakers and able to perform any task for which you need help.
Free Unlimited Revisions
If you think we missed something, send your order for a free revision. You have 10 days to submit the order for review after you have received the final document. You can do this yourself after logging into your personal account or by contacting our support.
Prompt Delivery and 100% Money-Back-Guarantee
All papers are always delivered on time. In case we need more time to master your paper, we may contact you regarding the deadline extension. In case you cannot provide us with more time, a 100% refund is guaranteed.
Original & Confidential
We use several writing tools checks to ensure that all documents you receive are free from plagiarism. Our editors carefully review all quotations in the text. We also promise maximum confidentiality in all of our services.
24/7 Customer Support
Our support agents are available 24 hours a day 7 days a week and committed to providing you with the best customer experience. Get in touch whenever you need any assistance.
Try it now!
How it works?
Follow these simple steps to get your paper done
Place your order
Fill in the order form and provide all details of your assignment.
Proceed with the payment
Choose the payment system that suits you most.
Receive the final file
Once your paper is ready, we will email it to you.
No need to work on your paper at night. Sleep tight, we will cover your back. We offer all kinds of writing services.
No matter what kind of academic paper you need and how urgent you need it, you are welcome to choose your academic level and the type of your paper at an affordable price. We take care of all your paper needs and give a 24/7 customer care support system.
Admission Essays & Business Writing Help
An admission essay is an essay or other written statement by a candidate, often a potential student enrolling in a college, university, or graduate school. You can be rest assurred that through our service we will write the best admission essay for you.
Our academic writers and editors make the necessary changes to your paper so that it is polished. We also format your document by correctly quoting the sources and creating reference lists in the formats APA, Harvard, MLA, Chicago / Turabian.
If you think your paper could be improved, you can request a review. In this case, your paper will be checked by the writer or assigned to an editor. You can use this option as many times as you see fit. This is free because we want you to be completely satisfied with the service offered.