Academic Catalog

APPR 186A: PROPERTIES OF AIR DISTRIBUTION FOR SHEET METAL AIR CONDITIONING SERVICE

Foothill College Course Outline of Record

Foothill College Course Outline of Record
Heading Value
Units: 4.5
Hours: 30 lecture, 78 laboratory per quarter (108 total per quarter)
Prerequisite: Per California Code of Regulations, this course is limited to students admitted to the Sheet Metal-Air Conditioning Service Mechanic Program.
Degree & Credit Status: Degree-Applicable Credit Course
Foothill GE: Non-GE
Transferable: None
Grade Type: Letter Grade (Request for Pass/No Pass)
Repeatability: Not Repeatable

Student Learning Outcomes

  • A successful student will be able to use a psychrometric chart to plot air conditioning processes.
  • A successful student will be able to define the relationship between air volume and air pressure in HVAC systems.

Description

Introduction to the different properties of air distribution with air volumes, pressures, humidity and temperature; basic air balance procedures.

Course Objectives

The student will be able to:
A. Describe the properties of air, relating to the affect of temperature, pressure and humidity changes on volume, density and heat carrying capacity.
B. Explain the purpose of psychometric charts, and demonstrate their use.
C. Calculate heat transfer through building materials.
D. Estimate heat/cooling load and air distribution to achieve a balanced residential HVAC system.

Course Content

A. Describe the properties of air, relating to the affect of temperature, pressure and humidity changes on volume, density and heat carrying capacity
1. Explanation of the properties of air
2. Definition of the relationship between air volume and air pressure
3. Discussion of saturated air, relative humidity and dew point temperature
4. Examine and discuss the enthalpy of air and the sensible content of dry air
B. Explain the purpose of psychometric charts, and demonstrate their use
1. Introduction to psychometers and the psychometric chart
2. Using a psychometric chart to plot air conditioning processes
C. Calculate heat transfer through building materials
1. Discuss how heat enters a building through conduction and radiation
2. Use of the U factor in calculating heat gains through a wall
D. Estimate heat/cooling load and air distribution to achieve a balanced residential HVAC system
1. Load and air carrying capacity
2. Use of correct air flow rates to produce desired room conditions
3. Balancing air distribution in a residential air conditioning system

Lab Content

A. Practice measuring air properties in different conditions
B. Practice using a psychometer and psychometric chart

Special Facilities and/or Equipment

Laboratory equipped with air conditioning equipment.

Method(s) of Evaluation

A. Results of written quizzes and tests, and comprehensive written final examination
B. Shop participation
C. Assignments that may include outside readings, reports and worksheets
D. Maintenance of a workbook of student's daily work activities

Method(s) of Instruction

A. Lecture
B. Discussion
C. Laboratory
D. Demonstration

Representative Text(s) and Other Materials

Whitman, B., B. Johnson, J. Tomczyk, and E. Silberstein. Refrigeration and Air Conditioning Technology. Delmar, Cengage Learning, 2009.

International Training Institute for the Sheet Metal and Air Conditioning Industry. Service Work Lab Manual. IDI Multimedia, 2008.



NOTE: These are the standard Sheet Metal textbooks/workbooks used for this course. Although they may not be within 5 years of the required published date, they are the most current books used when teaching this course.

 

Types and/or Examples of Required Reading, Writing, and Outside of Class Assignments

A. An example of a reading assignment is to read Unit 1, "Heat and Pressure," in the Refrigeration and Air Conditioning Technology text.

B. An example of a written assignment is to complete the review questions and calculations at the end of Unit 6, "Heat and Heat Transfer," in the Testing, Adjusting and Balancing of Environmental Systems text.

 

Discipline(s)

Air Conditioning, Refrigeration, Heating