# Presentation: 270968

## BS-8: IFC HVAC Extension SchemataApril 2000 Dr. Vladimir BazjanacLawrence Berkeley National LaboratoryProject Leader

***BS-8: IFC HVAC Extension Schemata*****April 2000***** *****Dr. Vladimir Bazjanac****Lawrence Berkeley National Laboratory****Project Leader**

## IFC Object Data Model Architecture

- Kernel

- Resource
- Layer

- Core & Extensions
- Layer

- Interop
- Layer

- Domain
- Layer

- Jeffrey Wix Consulting

## What’s 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**

- LBNL                                                                                                                                          vb: 4/4/2000

## 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**

- LBNL                                                                                                                                          vb: 4/4/2000

## 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)**

- LBNL                                                                                                                                          vb: 4/4/2000

## BS-7 Project Objectives

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

- LBNL                                                                                                                                          vb: 4/4/2000

## 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**

- LBNL                                                                                                                                          vb: 4/4/2000

## 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**

- LBNL                                                                                                                                          vb: 4/4/2000

## BS-8 Project IAI Schedule

- LBNL                                                                                                                                          vb: 4/4/2000

## E+ Interoperable Environment

- LBNL                                                                                                                                          vb: 4/4/2000