Pay attention to these key points about implementing the requirements of CPG Section 1.4: Mechanical System Design:
- Following ASHRAE-55 requires part-load and full-load calculations to ensure optimal efficiency while keeping occupants comfortable throughout the year.
- For heating and cooling equipment, you need to perform load calculations with assumptions that are consistent with the CPG, including accurate characterization of lighting, solar gain, glazing performance, occupancy, and ventilation loads based on the specific design characteristics of the project.
- For ventilation equipment, you need to document fan-sizing calculations with zone-by-zone load calculations.
- To perform part-load calculations, use benchmark data, average daytime temperatures, non-peak solar gain, and other assumptions to define part-load conditions for the heating and cooling system.
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