Thermodynamics

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28 Οκτ 2013 (πριν από 3 χρόνια και 11 μήνες)

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Thermodynamics

Chapter 15

Figure 15
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1

An ideal gas in a cylinder fitted with a movable piston.

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PV=nRT. If n, R, and T are constant, then PV=k

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What type of mathematical relationship exists between P & V?

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Sketch a plot of P vs. V.

Define these terms:

(If you know what each term
means, you should be able to
compare/contrast!)


Isobaric


Isochoric


Adiabatic


Isothermal


Isovolumetric

Figure 15
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22

Problem 10

Figure 15
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3

PV diagram for adiabatic (AC) and isothermal (AB) processes on
an ideal gas.

Figure 15
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4

(a) Isobaric ("same pressure") process. (b) Isovolumetric ("same
volume") process.

Figure 15
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6

PV diagram for different processes where the system changes from
A to B.

Figure 15
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11

Schematic diagram of energy transfers for a heat engine.

Figure 15
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15

Diagram of an impossible perfect heat engine in which all heat
input is used to do work.

Figure 15
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16

Schematic diagram of energy transfers for a refrigerator or air
conditioner.

Figure 15
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17

Typical refrigerator system

Figure 15
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18

A heat pump uses an electric motor to "pump" heat from the cold
outside to the warm inside of a house.