HVAC Design 101

• ★ Getting Started with Understanding your Results Videos
• Plant Sizing Tab - Heating
• Plant Sizing Tab - Cooling
• Average Solar Cooling Load Thresholds - Sefaira and Energy Plus
• What Calculation(s) is/are taking place?!
• Parametric Software Shading

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HVAC Outputs

• Web Application Annual Outputs
• Web Application Sizing Outputs

Advanced HVAC Design

• Server Rooms and Sefaira
• How Temperature reset works in Central Air Systems
• HVAC Operation with Schedules and Days
• What "warmup" and "cooldown" loads mean
• How to study an option with multiple HVAC systems using Group
• Use Case - Exploring Zone Sizing and Problem Zones

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Zoning

• Cardinal Direction of Perimeter Zones
• Introduction to Thermal Zones
• Perimeter Core Zoning Failure
• Zoning Strategy - One Zone per Floor
• Zoning Strategy - Perimeter / Core
• Zoning Strategy - One Zone per Room

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Natural Ventilation and Thermal Comfort

• ★ Introduction to Thermal Comfort in Sefaira
• Natural Ventilation Feature - Overview and Set-up
• Openness and Free Area - Inputs
• How Free Area calculations work
• Window Control Options - Natural Ventilation
• HVAC Integration - Heating and Cooling Unit

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Energy Plus

• Sefaira compliance with ASHRAE 140
• Difference in AHU vs. Zone Heating in CAV and VAV Systems
• Sefaira workarounds with EnergyPlus sizing
• List of EnergyPlus mysteries and our explanations for them
• Additional analysis with Sefaira's Energy Plus output
• How to Convert an .idf file from Sefaira for use in EnergyPlus

Explanation of Assumptions and HVAC Systems

• How chiller inputs work in Sefaira
• Air to Water Heat Pumps Explained
• Radiant Floor
• Ventilation rate in EnergyPlus
• HVAC Templates
• VAV with Package Rooftop

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Sefaira Web Application FAQs

• Tooltip - Comparing different strategies (Cloning) - 1 min
• Tooltip - Seeing more results in the web application - 1min
• Reference - CO2 output
• Reference - C02 Emission Rates
• Reference - ASHRAE Baseline Systems
• Reference - Utility Rates

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