Homework Set 2 Solutions

# Homework Set 2 Solutions - Homework 15 Solutions Due Monday...

This preview shows pages 1–4. Sign up to view the full content.

Homework 15 Solutions Due: Monday 3/1 A Stirling cycle engine using a radioactive isotope for space power applications operates at a hot end temperature of 650 ° C and rejects heat through a radiator to the vacuum of space with a cold end temperature at 120 ° C. Calculate its ideal Stirling cycle efficiency. Ideal Sterling cycle efficiencies can be estimated by Carnot cycle efficiencies. η Sterling = η Carnot = 1 T r T a = 1 120 + 273 ( ) 650 + 273 ( ) = 57.42%

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Homework 16 Solutions Due: Wednesday 3/3 Construct a table comparing the PWR and the BWR designs in terms of: 1. Their Engineered Safety features. ESFs. 2. Their technical specification and operational characteristics. Engineered Safety Features Pressurized Water Reactor Boiling Water Reactor 1. Control rods 1. Control rods 2. Containment vessel with steam suppression spray 2. Containment vessel with steam suppression spray 3. Accumulator tanks with coolant under nitrogen pressure 3. Pressure suppression pool to quench steam 4. Residual heat removal system 4. Residual heat removal system 5. High Pressure Coolant Injection system 5. High Pressure Coolant Injection system 6. Low Pressure Coolant Injection system 6. Low Pressure Coolant Injection system 7. Boron injection tank 7. Boron injection tank 8. Extra coolant in refueling storage tank 8. Extra coolant in refueling storage tank 9. An internal core spray system The technical specifications for PWRs are given in Table 1 on page 6 of Chapter IV.2 Pressurized Water Reactors. The same characteristics for a BWR are given in Table 1 on page 6 of Chapter IV.3 Boiling Water Reactors.
Homework 17 Solutions Due: Wednesday 3/10 An executive at an electrical utility company needs to order natural uranium fuel from a mine. The utility operates a single 1,000 MWe power plant of the CANDU type using natural uranium, and operating at an overall thermal efficiency of 33.33 percent. What is the yearly amount in metric tons of: a. U 235 burned up by the reactor? b. U 235 consumed by the reactor? c. Natural uranium metal that the executive has to contract with the mine per year as feed to his nuclear unit?

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern