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

Chapter 5 | 275 gases enter the regenerator at 140 kPa and 800 K and leave at 130 kPa and 600 K. Treating the exhaust gases as a ...

opened, and air from the high-pressure line is allowed to enter the cylinder. The valve is turned off when the pressure inside t ...

Chapter 5 | 277 more air gets into the cylinder. Consequently, more fuel can be burned and more power can be produced by the eng ...

5–212 Refrigerant-134a at 1.4 MPa and 90°C is throttled to a pressure of 0.6 MPa. The temperature of the refrigerant after throt ...

Chapter 6 THE SECOND LAW OF THERMODYNAMICS | 279 T o this point, we have focused our attention on the first law of thermodynamic ...

6–1 ■ INTRODUCTION TO THE SECOND LAW In Chaps. 4 and 5, we applied the first law of thermodynamics, or the conser- vation of ene ...

to engineers, and the second law provides the necessary means to determine the quality as well as the degree of degradation of e ...

6–3 ■ HEAT ENGINES As pointed out earlier, work can easily be converted to other forms of energy, but converting other forms of ...

The net work output of this power plant is simply the difference between the total work output of the plant and the total work i ...

or (6–4) It can also be expressed as (6–5) since Wnet,outQinQout. Cyclic devices of practical interest such as heat engines, r ...

Can We Save Qout? In a steam power plant, the condenser is the device where large quantities of waste heat is rejected to rivers ...

the cycle, even under idealized conditions. The requirement that a heat engine exchange heat with at least two reservoirs for co ...

The Second Law of Thermodynamics: Kelvin–Planck Statement We have demonstrated earlier with reference to the heat engine shown i ...

The refrigerant enters the compressor as a vapor and is compressed to the condenser pressure. It leaves the compressor at a rela ...

Then the COP relation becomes (6–9) Notice that the value of COPRcan be greater than unity. That is, the amount of heat removed ...

Most existing heat pumps use the cold outside air as the heat source in winter, and they are referred to as air-source heat pump ...

Chapter 6 | 291 EXAMPLE 6–3 Heat Rejection by a Refrigerator The food compartment of a refrigerator, shown in Fig. 6–24, is main ...

The Second Law of Thermodynamics: Clausius Statement There are two classical statements of the second law—the Kelvin–Planck stat ...

Consider the heat-engine-refrigerator combination shown in Fig. 6–27a, operating between the same two reservoirs. The heat engin ...

Consider the steam power plant shown in Fig. 6–28. It is proposed to heat the steam by resistance heaters placed inside the boil ...