Lecture 23 Examples - Example 1 Water in a piston-cylinder...

Info icon This preview shows pages 1–3. Sign up to view the full content.

Example 1: Water in a piston-cylinder device is heated from V 1 = 0.05 m 3 to V 2 = 0.09 m 3 at a constant pressure of 240 kPa. If the cylinder contains 2.4 kg of water, how much heat is transferred during the process? If the heat source is a reservoir at a constant temperature of 500 K, how much entropy is generated in the process?
Image of page 1

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

Example 2: After graduation you take a job with the Acme energy services company. Your first job is to purchase high efficiency heat pumps. The heat pumps employ mechanical power and a heat engine to provide heat at T H = 100 °C. A low temperature heat sink at T C = 20 °C is also available. A salesman shows
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: you two models. Performance data for each model operating at steady state is provided below: Example 3: Consider the following schematic of a steam generator and a turbine in coal-burning power plant. The operating conditions at steady state are given below: P 2 = xxx kPa, T 2 = xxx °C, ° = xxx kg/s, T 3 = xxx °C, P 4 = xxx kPa Assuming the turbine is adiabatic and reversible, calculate the temperature and quality of the fluid at its exit. Calculate the amount of entropy generated in the steam generator if the combustion process can be modeled as a heat source at a constant 700°C....
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    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.

    Student Picture

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

  • Left Quote Icon

    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.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    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.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern