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Hevacomp Wiki Internal Surfaces appearing in PartL U-Value checks
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    Internal Surfaces appearing in PartL U-Value checks

      Product(s): Hevacomp Mechanical Designer
      Version(s): V8i (N/A)
      Environment: N/A
      Area: N/A
      Subarea: N/A

    Overview

    The SBEM calculation engine performs a comprehensive check on U-Values for external and internal surfaces. Internal surfaces can and will appear on the Compliance Report.

    Method

    An internal surface can be flagged as "Maximum value" surface under the following conditions:

    • Temperature differential to the connected zone is considered too high. For e.g. Current zone is set at 21°C and temperature on other side set at 5°C

    From CAD Input, examine the Room data and compare the zone to surrounding zones.

    • Partition surface is not connected to another zone

    From CAD Input, examine the Surface data and check the partition connection.

    • Current zone is defined with HVAC and connected zone has no HVAC defined

    From within PartL, check that your HVAC is specified correctly for each zone

    • U-value of surface fails the U-value check

    The following figures are used for the reference building. You should ensure your fabric data is within these limits.

    Note that the U-Value checks are area weighted.

    The Data Reflection report is a useful debug tool for examining what data is passed into the SBEM calculation.

    • External
    • SBEM
    • Hevacomp Mechanical Designer
    • PartL
    • Internal
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    • Duncan Brown Created by Duncan Brown
    • When: Mon, Jul 16 2012 9:32 AM
    • Shane Regan Last revision by Bentley Colleague Shane Regan
    • When: Mon, Aug 24 2020 5:13 AM
    • Revisions: 14
    • Comments: 0
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