Graduando

SOLUTION MANUAL CHAPTER 11

Borgnakke and Sonntag

CONTENT
SUBSECTION In-text concept questions Concept-Study guide problems Rankine cycles, power plants Simple cycles Reheat cycles Open feedwater heaters Closed feedwater heaters Nonideal cycles Cogeneration Refrigeration cycles Extended refrigeration cycles Ammonia absorption cycles Availability or Exergy Concepts refrigeration cycles Combined cycles Review Problems PROB NO. a-f 1-12 13-32 33-38 39-48 49-56 57-68 69-74 75-95 96-100 101-104 105-115 116-119 120-124 125-133

Excerpts from this work may be reproduced by instructors for distribution on a not-for-profit basis for testing or instructional purposes only to students enrolled in courses for which this textbook has been adopted. Any other reproduction or translation of this work beyond that permitted by Sections 107 or 108 of the 1976 United States Copyright Act without the permission of the copyright owner is unlawful.

Borgnakke and Sonntag

In-Text Concept Questions

Excerpts from this work may be reproduced by instructors for distribution on a not-for-profit basis for testing or instructional purposes only to students enrolled in courses for which this textbook has been adopted. Any other reproduction or translation of this work beyond that permitted by Sections 107 or 108 of the 1976 United States Copyright Act without the permission of the copyright owner is unlawful.

Borgnakke and Sonntag

11.a Consider a Rankine cycle without superheat. How many single properties are needed to determine the cycle? Repeat the answer for a cycle with superheat. a. No superheat. Two single properties. High pressure (or temperature) and low pressure (or temperature). This assumes the condenser output is saturated liquid and the boiler output is saturated vapor. Physically the high pressure is determined by the pump and the low temperature is determined by the cooling medium. b. Superheat. Three single properties. High pressure and temperature and low