Heating and Air Conditioning I

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Heating and Air Conditioning I

Principles of Heating, Ventilating and Air
Conditioning

R.H. Howell, H.J. Sauer, and W.J. Coad

ASHRAE, 2005

basic textbook/reference material

For ME 421

John P. Renie

Adjunct Professor


Spring 2009

Chapter 2
-

Thermodynamics


Energy Principles

Chapter 2
-

Thermodynamics


Energy principles


stored …

Chapter 2
-

Thermodynamics


Energy principles


stored …

Chapter 2
-

Thermodynamics


Energy principles


stored …

Chapter 2
-

Thermodynamics


Energy principles
-

summary


Chapter 2
-

Thermodynamics


Energy principles
-

Heat


Chapter 2
-

Thermodynamics


Energy principles
-

Work


Chapter 2
-

Thermodynamics


Energy principles
-

Work


Chapter 2
-

Thermodynamics


Energy principles
-

Power


Chapter 2
-

Thermodynamics


Energy principles


Work derivation (FBD)


Chapter 2
-

Thermodynamics


Energy principles
-

Work


Chapter 2
-

Thermodynamics


Energy principles
-

Work


Chapter 2
-

Thermodynamics


Energy principles


Flow Work


Chapter 2
-

Thermodynamics


First Law of Thermodynamics

Chapter 2
-

Thermodynamics


First Law of Thermodynamics

Chapter 2
-

Thermodynamics


First Law of Thermodynamics

Chapter 2
-

Thermodynamics


First Law of Thermodynamics

Chapter 2
-

Thermodynamics


First Law of Thermodynamics

Chapter 2
-

Thermodynamics


First Law of Thermodynamics

Chapter 2
-

Thermodynamics


First Law of Thermodynamics

Chapter 2
-

Thermodynamics


Second Law of Thermodynamics

Chapter 2
-

Thermodynamics


Second Law of Thermodynamics

Chapter 2


Thermodynamics


Second Law of Thermodynamics

Chapter 2
-

Thermodynamics


Second Law of Thermodynamics

Chapter 2


Thermodynamics


Second Law of Thermodynamics

Chapter 2


Thermodynamics


Second Law of Thermodynamics


Two statements are equivalent


Reservoir


source of heat or a heat sink large enough that it does not
undergo a temperature change when heat is added or subtracted from it.


Add device to Clausius statement that doesn’t violate 2
nd

law with Q
L

= Q
L

it then reduces to a violation based on the Kelvin
-
Planck statement.

Chapter 2
-

Thermodynamics


Second Law of Thermodynamics

Chapter 2
-

Thermodynamics


Second Law of Thermodynamics

Chapter 2
-

Thermodynamics


Second Law of Thermodynamics
-

Entropy

Chapter 2
-

Thermodynamics


Second Law of Thermodynamics
-

Entropy

Chapter 2
-

Thermodynamics


Second Law of Thermodynamics
-

Entropy

Chapter 2
-

Thermodynamics


Second Law of Thermodynamics


Entropy Equation

Chapter 2
-

Thermodynamics


Second Law of Thermodynamics


Entropy Equation

Chapter 2
-

Thermodynamics


Summary


Table 2.15


Basic Equations of Thermodynamics

Chapter 2
-

Thermodynamics


Summary


Table 2.15


Basic Equations of Thermodynamics

Chapter 2
-

Thermodynamics


Summary


Table 2.15


Basic Equations of Thermodynamics

Chapter 2
-

Thermodynamics


Summary


Table 2.15


Basic Equations of Thermodynamics

Chapter 2
-

Thermodynamics


Summary


Table 2.15


Basic Equations of Thermodynamics