AHR 225 Commercial System Design

Lecture: 2 Lab: 3 Clinic: 0 Credits: 3

This course covers the principles of designing heating and cooling systems for commercial buildings. Emphasis is placed on commercial heat loss/gain calculations, applied psychrometrics, air-flow calculations, air distribution system design, and equipment selection. Upon completion, students should be able to calculate heat loss/gain, design and size air and water distribution systems, and select equipment.

Pre-requisite(s): AHR 211.
Course is typically offered in Spring.
Student Learning Outcomes (SLOs)
At completion of the course, the student should be able to do the following:

Calculate the cooling and heating loads associated with fenestration using ACCA Manual N methodologies, considering factors such as solar heat gain, U-factor, and shading.
Calculate heat gain and heat loss through opaque panels using ACCA Manual N methodologies, considering factors such as U-factor, thermal mass, and insulation.
Calculate internal heat gains from occupants, lighting, and equipment using ACCA Manual N methodologies to determine their impact on commercial cooling and heating loads.
Calculate infiltration heat gains and losses using ACCA Manual N methodologies, considering factors such as building envelope tightness, pressure differences, and outdoor conditions.
Calculate duct heat gains and losses using ACCA Manual N methodologies to ensure accurate load assessments in commercial HVAC system design.
Calculate ventilation loads using ACCA Manual N methodologies, considering outdoor air requirements, climate conditions, and their impact on heating and cooling loads.
Calculate air distribution loads (blower heat) using ACCA Manual N methodologies, considering factors such as airflow, static pressure, and system efficiency.