Skip to main content

A sealed, rigid vessel of 2 m3 contains R-134a at 10°C; at these conditions it is a saturated mixture of liquid and vapour

Please give your assumptions and detailed solution.
QUESTION 1 (30 marks)
A sealed, rigid vessel of 2 m3 contains R-134a at 10°C; at these conditions it is a saturated mixture of liquid and vapour. The liquid phase disappears when it is heated to 48°C. Determine:
a) The pressure at 48°C
b) The initial mass of liquid
c) The heat transfer required to cause the change from state 1 to state 2.
Question 2: due on 9th April 2016 (20 marks)
Please submit online in the link available for this problem on the study desk. The link is given in the week the assignment is due.
Please give your assumptions and detailed solution.
QUESTION 2 (20 marks)
A heat exchanger cools 1.1 kg/s of water which enters at 10 kPa and 300°C and exits as a saturated liquid. The coolant is lake water that enters at 20°C and exits at 30°C. If all processes are isobaric, determine the required flow rate of lake water.
Question 3: due on 30 April 2017 (20 marks)
Please submit online in the link available for this desk. The link is given in the week the assignment is due.
Please give your assumptions and detailed solution.
QUESTION 3 (20 marks)
A heat engine which operates on the Carnot cycle receives 6 kW. If the hightemperature reservoir is at 250°C and the low-temperature reservoir is at 30°C, determine:
a) The efficiency of the cycle
b) The heat transfer to the low-temperature reservoir
Question 4: due on 14 May 2017 (30 marks)
Please submit online in the link available for this desk. The link is given in the week the assignment
Please give your assumptions and detailed solution.
QUESTION 4 (30 marks)
The compressor of a large gas turbine receives air from the ambient, quiescent surroundings at 95 kPa and 20°C. At the compressor discharge, air exits at 1.52 MPa and 430°C with a speed of 90 m/s and area of 2 m2. If the air in the compressor undergoes a polytropic process which has a polytropic coefficient of
1.3, determine:
a) The mass flow rate through the compressor
b) The power required to drive the compressor
c) The heat transfer
Include any necessary explanations or calculations to justify your answer.
Question 5: due on 21 May 2016 (100 marks)
Please submit online in the link available for this desk. The link is given in the week the assignment
Please give your assumptions and detailed solution.
QUESTION 5 (100 marks)
An engine operates on the Diesel cycle, which is ideal except for the compression process, which has a polytropic coefficient of 1.2. The state prior to compression is 95 kPa, 290 K and 0.5 L, while the maximum temperature is 1800 K and the compression ratio is 20:1.
a) Sketch the P-v diagram for this cycle
b) Calculate the maximum pressure
c) Calculate the heat transfer in
d) Calculate the heat transfer out
e) Calculate the thermal efficiency
f) Calculate the Mean Effective Pressure
Question 6: due on 28 May 2016 (100 marks)
Please submit online in the link available for this desk. The link is given in the week the assignment
Please give your assumptions and detailed solution.
QUESTION 6 (100 marks)
An ideal heat pump operating at 1.1 kW uses R-134a as the refrigerant. Saturated vapour enters the compressor at 10°C and the fluid exits the compressor at 1 MPa.
a) Sketch the T-s diagram for this process
b) Calculate the mass flow rate of the R-134a
c) Calculate the heat transfer rate out of the R-134a
d) Calculate the heat transfer rate into the R-134a
e) Calculate the COP

Comments

Post a Comment

Popular posts from this blog

Should pit bull terriers be banned in my community

 Discussion Forum: Counterarguments (Should pit bull terriers be banned in my community) You created a question about the topic for your W6 Rough Draft. For this discussion, you will give an answer to that question in the form of a thesis statement. "Dieting Makes People Fat" Main Post: Share your thesis statement with your classmates. Please note: As with last week’s discussion, nothing here is set in stone. Be open to changing everything about your topic, including your position and audience, as you research it and get feedback from your classmates. Topic + Position/Purpose + Supporting Points =Thesis Statement Example: Suppose the question you posed in the Week 5 discussion was something like, “Should pit bull terriers be banned in my community?” After doing some preliminary research, you have concluded that pit bulls, if raised properly, are no more dangerous than other breeds of dogs. Your thesis statement can be something like, “Pitbulls should not be banned
Post a Comment
Read more

Controversy Associated With Dissociative Disorders

 Assignment: Controversy Associated With Dissociative Disorders The  DSM-5-TR  is a diagnostic tool. It has evolved over the decades, as have the classifications and criteria within its pages. It is used not just for diagnosis, however, but also for billing, access to services, and legal cases. Not all practitioners are in agreement with the content and structure of the  DSM-5-TR , and dissociative disorders are one such area. These disorders can be difficult to distinguish and diagnose. There is also controversy in the field over the legitimacy of certain dissociative disorders, such as dissociative identity disorder, which was formerly called multiple personality disorder. In this Assignment, you will examine the controversy surrounding dissociative disorders. You will also explore clinical, ethical, and legal considerations pertinent to working with patients with these disorders. Photo Credit: Getty Images/Wavebreak Media To Prepare · Review this week’s Learning
Post a Comment
Read more

CYBER SECURITY and how it can impact today's healthcare system and the future

 Start by reading and following these instructions: Create your Assignment submission and be sure to cite your sources, use APA style as required, and check your spelling. Assignment: Recommendations Document Due Week 6 (100 pts) Main Assignment Recommendations Document The 1250 to 1500-word deliverable for this week is an initial draft of your recommendations. Note that this is a working document and may be modified based on insights gained in module eight and your professor's feedback. This document should contain the following elements: Summary of your problem or opportunity definition A list of possible recommendation alternatives. In this section, you are not yet at the point of suggesting the best set of recommendations but you are trying to be creative and explore all the different ways that the problem or opportunity might best be addressed. The end result here will be a list of alternatives among which you will choose your final recom
Post a Comment
Read more