Become a HVAC Professional - Part 2/3- Load Calculations HAP

Define vault as a vertical surface exposed to the sun, and partition as walls not exposed to the sun, clarifying their roles in load calculations.

Identify the difference between roof and ceiling by understanding sun exposure, where the roof is exposed to sun and the ceiling is not, a crucial concept before load calculations.

Learn how ventilation introduces fresh air to a room and how infiltration through cracks and gaps adds heat, essential before cooling load calculation.

Learn about external and internal heat loads and how heat transfers through conduction, convection, and radiation, with examples like kitchens and partition walls.

Explore the R and U formula for hvac load calculations, linking resistance and heat transfer coefficient to materials like glass, doors, and concrete, where R is inversely proportional to U.

Explore wall heat load calculations using the overall heat transfer coefficient U, outside minus inside temperature, and wall area, with HP software auto-calculating U and noting glass conduction and radiation.

Understand glass heat load by examining conduction and radiation through windows. Learn how the overall heat transfer coefficient (U) combines window area and temperature difference to estimate heat gains.

Learn formulas to calculate heat from partition walls, floors, and ceilings using delta temperature and correction factors. See how these basics support roof calculations and software-based cooling load analyses.

Open the hap load calculation software, click new to create a project, and set ventilation standards, units, and preferences before proceeding with load calculations.

Select your region and city to input weather details for hvac load calculations; the tool auto-fills longitude, latitude, elevation, and design parameters, which you can adjust before pressing ok.

Assign roof and wall details by configuring vault properties, adjusting room volume, and selecting gypsum board resistance within the project libraries.

Add window details in hap by creating and renaming window entities, duplicating them to form A, B, C, D, and setting a U value of 2.1 with shading coefficient 0.4.

Add general properties for the living room in the load calculation, defining space, ventilation requirements per 62.1, and enabling auto-populated values from the library.

Explore internal properties for load calculations in HVAC design, detailing lighting types, occupancy estimates, electrical equipment, and scheduling to optimize energy use.

Select a roof from the library and apply a flat horizontal roof with zero slope. Match the roof area to the floor and note no skylights.

Analyze heat transfer through partition walls between conditioned and unconditioned spaces and learn to input area and temperature values in HAP to generate the design report for load calculations.

Perform load calculations to determine the AC tonnage for the master bedroom by duplicating the living room layout, adjusting floor area, windows, and partition heat.

Learn to create a system for each space, name each system after its space, uncheck central heating for cooling calculations, and set thermostat and design reports for the next video.

Preview design reports to verify total tonnage and room loads for the four-bedroom system, review airflow, coil loads, and psychometric analyses, and export the report in English.

Save your project by clicking here, selecting a folder, and creating a folder to store your files. Archive your current project to send by email as a single file.

Archive the project by saving it to a chosen location and optionally send the archive via email; the next video covers reading a drive and opening an audio analysis program.

Learn how to retrieve a project your friend sent from the desktop and share it using the archive option without compressing files.