Microsoft Word - Cengel and Boles TOC _2-03-05_.doc

Net energy transfer Change in internal, kinetic, by heat, work, and mass potential, etc., energies Therefore, the final internal ...

EXAMPLE 2–12 Heating Effect of a Fan A room is initially at the outdoor temperature of 25°C. Now a large fan that consumes 200 W ...

Chapter 2 | 77 7 cents per kWh, determine annual energy cost of lighting for this class- room. Also, discuss the effect of light ...

78 | Thermodynamics FIGURE 2–52 The definition of performance is not limited to thermodynamics only. © Reprinted with special pe ...

Chapter 2 | 79 all resistance heaters is 100 percent as they convert all the electrical energy they consume into thermal energy. ...

AFUE of some new high-efficiency furnaces exceeds 96 percent, but the high cost of such furnaces cannot be justified for locatio ...

Chapter 2 | 81 the food to the energy consumed by the appliance (Fig. 2–56). Electric ranges are more efficient than gas ranges, ...

EXAMPLE 2–15 Cost of Cooking with Electric and Gas Ranges The efficiency of cooking appliances affects the internal heat gain fr ...

Chapter 2 | 83 converted entirely from one mechanical form to another, and the mechani- cal efficiencyof a device or process can ...

84 | Thermodynamics Generator = = 0.75 × 0.97 = 0.73 Turbine turbine–gen turbine= 0.75 generator= 0.97 turbine generator hh hhh ...

Chapter 2 | 85 Standard Motor 60 hp h = 89.0% High-Efficiency Motor 60 hp h = 93.2% FIGURE 2–61 Schematic for Example 2–17. Then ...

86 | Thermodynamics FIGURE 2–62 Energy conversion processes are often accompanied by environmental pollution. © Corbis Royalty F ...

Chapter 2 | 87 usually grouped as hydrocarbons (HC), nitrogen oxides (NOx), and carbon monoxide (CO) (Fig. 2–63). The HC emissio ...

component of smog (Fig. 2–64). The smog formation usually peaks in late afternoons when the temperatures are highest and there i ...

Chapter 2 | 89 a certain amount of acid, but the amounts produced by the power plants using inexpensive high-sulfur coal has exc ...

is about 360 ppm (or 0.36 percent). This is 20 percent higher than the level a century ago, and it is projected to increase to o ...

Chapter 2 | 91 mechanical energy, and thus electric cars are often touted as “zero emis- sion” vehicles and their widespread use ...

Heat can be transferred in three different ways:conduction, convection,and radiation.We will give a brief description of each mo ...

In solids, heat conduction is due to two effects: the lattice vibrational waves induced by the vibrational motions of the molecu ...

The convection heat transfer coefficient his not a property of the fluid. It is an experimentally determined parameter whose val ...