On this webpage you will find my solutions to Chapters 1-6 of the eighth edition of "Thermodynamics: An Engineering Approach" by Çengel and Boles. Solutions to Chapters 7-12 are here, and solutions to Chapters 13-17 are here. Here is a link to the book's page on amazon.com. If you find my work useful, please consider making a donation. Thank you.

Chapter 1: Introduction and Basic Concepts
Problem 1-1C Problem 1-7C Problem 1-13C Problem 1-19C Problem 1-25 Problem 1-31 Problem 1-37
Problem 1-2C Problem 1-8C Problem 1-14C Problem 1-20C Problem 1-26E Problem 1-32 Problem 1-38
Problem 1-3C Problem 1-9C Problem 1-15C Problem 1-21 Problem 1-27 Problem 1-33 Problem 1-39
Problem 1-4C Problem 1-10C Problem 1-16C Problem 1-22 Problem 1-28 Problem 1-34 Problem 1-40
Problem 1-5C Problem 1-11C Problem 1-17C Problem 1-23 Problem 1-29 Problem 1-35 Problem 1-41
Problem 1-6C Problem 1-12C Problem 1-18C Problem 1-24 Problem 1-30 Problem 1-36 Problem 1-42
Chapter 1: Introduction and Basic Concepts (cont'd)
Problem 1-43E Problem 1-49 Problem 1-55 Problem 1-61 Problem 1-67 Problem 1-73 Problem 1-79
Problem 1-44 Problem 1-50 Problem 1-56 Problem 1-62 Problem 1-68 Problem 1-74 Problem 1-80
Problem 1-45 Problem 1-51 Problem 1-57 Problem 1-63 Problem 1-69 Problem 1-75 Problem 1-81
Problem 1-46 Problem 1-52 Problem 1-58 Problem 1-64 Problem 1-70 Problem 1-76 Problem 1-82
Problem 1-47 Problem 1-53 Problem 1-59 Problem 1-65 Problem 1-71 Problem 1-77 Problem 1-83
Problem 1-48 Problem 1-54 Problem 1-60 Problem 1-66 Problem 1-72 Problem 1-78 Problem 1-84
Chapter 1: Introduction and Basic Concepts (cont'd 2)
Problem 1-85 Problem 1-91 Problem 1-97 Problem 1-103 Problem 1-109 Problem 1-115 Problem 1-121
Problem 1-86 Problem 1-92 Problem 1-98 Problem 1-104 Problem 1-110 Problem 1-116 Problem 1-122
Problem 1-87 Problem 1-93 Problem 1-99 Problem 1-105 Problem 1-111 Problem 1-117 Problem 1-123
Problem 1-88 Problem 1-94 Problem 1-100 Problem 1-106 Problem 1-112 Problem 1-118 Problem 1-124
Problem 1-89 Problem 1-95 Problem 1-101 Problem 1-107 Problem 1-113 Problem 1-119 Problem 1-125
Problem 1-90 Problem 1-96 Problem 1-102 Problem 1-108 Problem 1-114 Problem 1-120 Problem 1-126