BS8: IFC HVAC Extension Schemata April 2000 Dr' Vladimir Bazjanac Lawrence Berkeley National Laborat

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BS-8 IFC HVAC Extension SchemataApril 2000
Dr. Vladimir BazjanacLawrence Berkeley
National LaboratoryProject Leader
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IFC Object Data Model Architecture
Domain Layer
Interop Layer
Core Extensions Layer
Kernel
Resource Layer
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Whats in IFCs Now

• Basic definitions for shared building service
  elements
• distribution element/port type
• equipment type
• flow
• plumbing fixtue
• primary fitting
• Basic definitions for HVAC extension schema
• actuator
• air terminal box
• controller
• damper
• sensor
• valve

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What IFCs Support Now

• Acquisition of building geometry by
• HVAC applications that depend on exchange of
  building geometry (e.g., duct layout)
• one-way applications that import what is
  available (e.g., thermal calculations))
• Cataloguing (some) performance metrics during the
  life-cycle of a building
• capture of planning phase performance metrics
• capture of design phase performance metrics
• capture of as-built performance metrics

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BS-7 HVAC Performance Validation

• Supports a selected number of subsystems
  throughout their life cycles
• Emphasis on including information to characterize
  performance
• air-handling unit (including fans, coils,
  dampers, etc.)
• hot water radiator systems (including radiators,
  boilers, valves, thermostats, etc)
• cooled beam (including heat exchanger,
  controller)
• chilled water systems (including chillers, pumps,
  cooling towers)

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BS-7 Project Objectives

• Capture performance information
• during the design phase
• for commissioning
• during and for monitoring
• for maintenance

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BS-8 HVAC Extension Schemata

• Extend IFC schemata to support the modeling and
  simulation of HVAC components and systems
• Support the use of various building simulation
  tools
• Import information from upstream applications
• building geometry
• general and performance specifications of
  materials
• general and performance specifications of
  quipment and furnishings
• Export information to downstream applications
• other HVAC applications
• cost estimating applications
• commissioning and building operations/maintenance
  software
• code-checking applications
• software that serves utility companies
• many other types of applications

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EnergyPlus Simulation Engine

• E is a next generation building energy
  performance simulation model
• HVAC-related definitions and input
• chillers heat recovery
• boilers desiccant units
• furnace packaged systems
• dometic hot water heaters compressors
• generators (all types) heat pumps
• pumps window air-conditioners
• heat rejection fan coil units
• cooling towers two- and four-pipe inducution
  units
• storage radiant heating/cooling
• control strategies air terminal units
• fans evaporative coolers
• coils connections via pipes and ducts
• outside air economizers

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BS-8 Project IAI Schedule
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E Interoperable Environment