COURSE DESCRIPTION

Studies air and its properties, characteristics, and measurements as applied to human comfort. Considers control of temperature, humidity, and distribution of air and air mixtures. Studies heat loss and heat gain factors. Considers the effect, the selection and layout of residential air conditioning and refrigeration systems. Lecture 3 hours. Laboratory 3 hours. Total 6 hours per week.

GENERAL COURSE PURPOSE

This course is a one-semester course designed to provide the student with the concept of air and its properties and heat and heat transfer for the purpose of load estimation and equipment selection.

ENTRY LEVEL COMPETENCIES

None

COURSE OBJECTIVES

Upon completion of this course, the student will be able to:

A. define and explain the basic principles relative to human and mechanical comfort

B. define and explain the basic principle of air and its properties (terms and definitions)

C. define and explain heat and the heat concept

D. identify types of air delivery systems

E. design conditions -- indoor and outdoor climate

F. interpret and analyze various tables and charts relating to psychrometrics

G. calculate and analyze various air problems

H. measure and plot air samples

I. analyze heat transfer calculations and perform various calculations using load estimation forms; compare the completed form to a computer assisted load estimation

J. study the effects of moisture in air

K. determine the correct air delivery methods and systems -- air distribution, fans, coil, and coil selection

L. define and determine air balance methods

M. perform experiments using by-pass air and return air

N. complete load calculations and equipment selection

A. Introduction to heat and its concepts

1. What is heat?
2. Methods of heat transfer
3. Sources of heat
4. Human comfort
5. Calculation of heat

B. Design conditions

1. Indoor/outdoor
2. Tables/chart
3. Comfort conditions
4. Heat storage
5. Solar heat gains
6. Construction materials
7. Heat transfer coefficients

C. Factors and formulas

1. Heat loss/heat gain
2. Minimum/maximum requirements
3. Layout/design
4. Internal/external heat gain

D. Air Delivery Methods

1. Air distribution, ducts
2. Supply and return systems
3. Air balance
4. Air measurements
5. Hydronic systems
6. Heat exchange system
7. Remote systems

E. Properties of air and the psychrometric chart

1. Change in volume with temperature/pressure
2. Chemical components of air
3. Comfort conditions
4. Psychrometric chart terms/definitions
5. Air conditioning processes on the psychrometric chart
6. Advanced psychrometric processes
7. Air mixtures
8. Design conditions

F. Psychrometric process for the conditioned air supply

1. Heating and cooling with air
2. Moisture calculations
3. Latent heat calculations
4. Bypassed air calculations
5. Indoor/outdoor air calculations
6. SHR lines
7. Capacity of refrigerating plant
8. Process air conditioning

Upon completion of this course, the student will be able to apply the completed forms, charts, and calculations to the programmed computer software concept.

Revised 09/92