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**Competency and Task List**

**Core Competencies**

Students should

have knowledge

of and be able to

demonstrate

proficiency in the

following:

**Mathematics for HVACR**

Adding, subtracting, multiplying, and dividing decimal numbers including negative numbers

Adding, subtracting, multiplying, and dividing fractions

Adding, subtracting, multiplying, and dividing whole numbers including negative numbers

Calculating ΔT

Calculating squares, cubes, and roots for area and volume

Converting English measurements to Metric measurements and Metric to English

Converting fractions to decimals, and decimals to fractions

Measure length, area, and volume using both inch pound (English) and SI (metric) measurements

Solving basic equations

Manipulate ratios and proportions as they relate to various equipment and components such as:

*Compressors*

*Pumps*

*Drive systems*

*Fans*

Students should

have knowledge

of and be able to

demonstrate

proficiency in:

**HVACR General Studies**

HVACR industry organizations

Energy resources

Energy efficiency ratings

Defining and differentiating between Renewable and Sustainable energy

Life Cycle cost Analysis

The meaning of the follow acronyms BIM, CBECS, ECM, EIA, EER, SEER, AFUE, HSPF, COP, ECM

Energy auditing

The thermodynamics of air and water vapor

The water vapor cycle in the Earth’s atmosphere

Standard air volume and density

Psychrometrics

The properties of each line on a psychrometric chart

Plotting any two basic points on the psychrometric chart and evaluating the data

Describing the eight processes of air conditioning and how to plot each on a psychrometric chart

Defining and use the Process Triangle on the psychrometric chart to calculate, sensible heat, latent

heat and total heat

Explaining the comfort zone and the different temperatures and relative humidity's effect on

human comfort

Explaining sensible heat ratio

Calculating mixed air problems for infiltration and ventilation

Calculating residential structure heat loss and gain

Calculating duct sizing, using duct sizing formulas

Developing critical thinking skills including analysis, evaluation, calculations, and the use of

computer technology