You have three devices: a Carnot heat engine, a Carnot heat pump and a Carnot refrigerator. Use a cold reservoir temperature of -18C. Plot the heat engine Carnot efficiency, the COPrefrig, and the COPhp as a function of the hot reservoir temperature from 27C to 177C. Use temperature increments of 5K in your plot. Make sure and reference a previous slide 'how to make a plot' that gives you the key elements of making a graph (in your choice of software). Describe what you see. Also describe the illustrated relationship between COPhp and COPref.

You have three devices: a Carnot heat engine, a Carnot heat pump and a Carnot refrigerator. Use a cold reservoir temperature of -18C. Plot the heat engine Carnot efficiency, the COPrefrig, and the COPhp as a function of the hot reservoir temperature from 27C to 177C. Use temperature increments of 5K in your plot. Make sure and reference a previous slide 'how to make a plot' that gives you the key elements of making a graph (in your choice of software). Describe what you see. Also describe the illustrated relationship between COPhp and COPref.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter2: Steady Heat Conduction

Section: Chapter Questions

Problem 2.21P

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