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All About CAD, CAM, and CAE

Thursday, May 9, 2013

Workflow of HVAC System in AutoCAD MEP

Workflow is a sequence of connected steps required to create a specific type of system. It is dependent on the type of system. For an HVAC system, the workflow is shown in below Figure.


The steps involved in the workflow of HVAC system are discussed next.

Specifying the HVAC Parameters
In this step, you need to specify all the basic parameters required to create an HVAC system. Some of the parameters are duct size, duct rise and drop, flow rate, cut length, and so on. On the basis of these parameters, the hierarchy of drawings in project will be decided.

Starting a Project
In this step, you need to create a project file to link the drawings of a system to each other. For example, the drawings related to HVAC system will be interlinked and will be in the same project. As a result, you can easily manipulate the parameters of the system.

Linking System File to the Architectural Plan
To create an HVAC system, you need to have an architectural plan. In this step, you will link the HVAC system file to the architectural plan file using the Project Navigator. After the completion of this step, you can reroute the HVAC lines according to the architectural plan.

Specifying Spaces and Zones
In this step, you need to create spaces and zones using the tools available in AutoCAD MEP. These spaces are used for exporting the building information related to the heating and cooling loads. The spaces are further divided into zones which represent the actual heating and cooling loads.

Calculating Loads
In this step, you need to calculate the heating and cooling loads for the building. These calculations are performed by using the analysis tools available in AutoCAD MEP.

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