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Design of HVAC Systems

HVAC 230

Design of HVAC Systems

HVAC 230

Course Description

Prerequisite: HVAC 135 or RHA 135. Focuses on heat gain and loss in residential and commercial structures with both forced air and hydronics representation. Explores computerized and manual load calculations and air system instrumentation in the lab sessions. Develops skills in use of Manual J and Manual D computer editions for heat load and duct sizing. Credits may be earned in either HVAC 230 or RHA 230 but not in both. (30-15)

Outcomes and Objectives

Demonstrate understanding of how to read and get information from blueprints in residential and commercial applications.

Objectives:

  • Explain basic blueprints.
  • Identify symbols used on blueprints.
  • Identify size and scale from blueprint.
  • Identify mechanical system components.
  • Sketch basic prints to scale.
  • Identify three-dimensional objects and drawings.

Demonstrate understanding of what effect insulation, building rotation, and general building construction has on heat loss and heat gain applications.

Objectives:

  • Identify temperature, heat gain, heat loss, heat transfer, BTU, and calorie.
  • Identify heat transfer methods.
  • Identify units of temperature-Fahrenheit, Celsius, and Kelvin.
  • Identify units of thermal conductivity.
  • Define the conductance of a material.
  • Define and calculate the heat resistance of a material.
  • Identify the compositions of materials.
  • Identify the effects of moisture, humidity, and condensation on materials.
  • Identify types of insulation.
  • Identify how building construction affects heat loss.
  • Identify building methods that will save on heating and cooling losses.
  • Calculate the effect that heat loads have on structures.

Demonstrate understanding of how to do a heat loss and heat gain calculation using Manual J.

Objectives:

  • Use the Manual J worksheet.
  • Create building files.
  • Create start-up values.
  • Print a building file.
  • Use worksheet tools to work with rooms.
  • Use worksheet tools to work with construction types. Use worksheet tools.
  • Identify worksheet lines.
  • Identify equipment load sizing latent and sensible.
  • Enter calculation factors.
  • Identify total loads.
  • Use correct Manual J tools.

Demonstrate understanding of and produce ductwork and layout practices based on airflow and static pressure.

Objectives:

  • Identify static pressure.
  • Identify methods for measuring airflow.
  • Measure cubic feet of area.
  • Calculate CFM in cubic feet.
  • Calculate the static pressure and airflow in a rectangular duct size.
  • Calculate the static pressure and airflow in a round duct.
  • Use a manometer to measure static pressure, airflow, and total system pressure.
  • Use an anemometer to measure air velocity and airflow in cubic feet per minute.
  • Use an inclined manometer to measure total pressure and static pressure.

Demonstrate understanding of how to apply Manual D.

Objectives:

  • Use Manual D worksheet.
  • Create building files.
  • Create airflow values.
  • Print a building file.
  • Use worksheet tools to work with rooms and buildings.
  • Use worksheet and worksheet tools.
  • Identify equipment load sizing and duct sizes and capacities.
  • Enter duct sizes, velocities, and static pressures.
  • Enter calculation factors.
  • Identify total loads.
  • Use Manual D tools.

Apply Manuals J and D to an actual print.

Objectives:

  • Use Manuals J and D data on an actual blueprint.
  • Identify and calculate heat gains and losses on the blueprint.
  • Identify correct material types to satisfy air speeds and temperature gains or losses.
  • Identify and calculate static pressures using data from Manuals J and D.
  • Identify and calculate air velocities using data from Manuals J and D.