The refrigerator shown in Fig. P2.90 steadily receives a power input of 0.15 kW while rejecting energy by heat transfer to the surroundings at a rate of 0.6 kW. Determine the rate at which energy is removed by heat transfer from the refrigerated space, in kW, and the refrigerators coefficient of performance.

Heat and Mass Transfer: Fundamentals & Applications Fourth Edition Yunus A. Cengel, Afshin J. Ghajar McGraw-Hill, 2011 Chapter 1 INTRODUCTION AND BASIC CONCEPTS Mehmet Kanoglu University of Gaziantep Copyright © 2011 The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Objectives • Understand how thermodynamics and heat transfer are related to each other • Distinguish thermal energy from other forms of energy, and heat transfer from other forms of energy transfer • Perform general energy balances as well as surface energy balances • Understand the basic mechanisms of heat transfer, which are conduction, convection, and radiation, a