Graphics Programs Reference
In-Depth Information
Chapter 8
HVAC Cooling and Heating Load Analysis
Accurate modeling of a building is essential in designing and sizing an
energy-efficient HVAC system for today's market. The majority of time
during the mechanical design phase of a project can be spent on correctly
modeling the building in a load-simulating program, such as Trane TRACE
700, DOE-2, or Carrier's Hourly Analysis Program (HAP).
Although these programs are essential to you, the mechanical designer,
settingupthebuildingaccuratelyforequipmentsizingwithintheseprograms
often can be a tedious task. Each space is set up individually, and typically
the physical layout and use of each space will be different. Alterations to
the building design or space usage by the architect or building owner during
this phase will cause you to return to any previously modeled spaces and
coordinate the necessary changes. This is very time-consuming and can often
be a point of contention between disciplines when changes occur later in the
design phase.
Autodesk
®
Revit
®
MEP software enables you to model the building spaces
accurately as well as quickly and efficiently track any building design and
construction changes on the fly, all within the project file. Revit MEP also
givesyoutheoptioneithertomodeltheHVACloadswithintheprogramitself
or to export the space load data via a Green Building XML (gbXML) schema
file to an external simulation software program. An addition to this workflow
is the ability to analyze the mass model (with a tool previously available only
to subscription customers).
In this chapter, you will learn to do the following:
• Prepare your Revit MEP model for analysis
• Perform heating and cooling analysis with Revit MEP 2015
• Perform a conceptual energy analysis on your building
• Analyze duct and pipe system pressure with Revit MEP 2015
• Export gbXML data to load-simulating software
