Cengel ch03
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The document discusses different types of energy transfer including heat, work, and mass. It contains figures illustrating concepts like specifying the directions of heat and work, a gas doing work as it forces a piston to move, the area under a process curve in a P-V diagram representing boundary work, the difference between work done by and on a system determining net work during a cycle, schematics of flow work, parts that make up total energy for flowing and non-flowing fluids, and absorption of radiation at an opaque surface. The document focuses on concepts and processes related to different modes of energy transfer.
Cengel ch03
- 1. CHAPTER 3 Energy Transfer by Heat, Work, and Mass
- 2. Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. FIGURE 3-9 Specifying the directions of heat and work. 3-1
- 3. Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. FIGURE 3-19 A gas does a differential amount of work δWb as it forces the piston to move by a differential amount ds. 3-2
- 4. Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. FIGURE 3-20 The area under the process curve on a P-V diagram represents the boundary work. 3-3
- 5. Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. FIGURE 3-22 The net work done during a cycle is the difference between the work done by the system and the work done on the system. 3-4
- 6. Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. FIGURE 3-48 Schematic for flow work. 3-5
- 7. Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. FIGURE 3-51 The total energy consists of three parts for a nonflowing fluid and four parts for a flowing fluid. 3-6
- 8. Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. FIGURE 3-58 The absorption of radiation incident on an opaque surface of absorptivity α. 3-7