# Presentation: 722389

## BS-8: IFC HVAC Extension Schemata7 August 2000 Dr. Vladimir BazjanacLawrence Berkeley National LaboratoryProject Leader

***BS-8: IFC HVAC Extension Schemata******7****** *****August 2000***** *****Dr. Vladimir Bazjanac****Lawrence Berkeley National Laboratory****Project Leader**

## IFC 2x Architecture

- Kernel

- Jeff Wix                                                                                                                                             June 2000

## What Can IFC 2x Do?

- Jeff Wix                                                                                                                                            June 2000

## What Can IFC 2x Do?

**Compartmentation**
-  fire
-  workstation

- Jeff Wix                                                                                                                                            June 2000

## What Can IFC 2x Do?

- Jeff Wix                                                                                                                                            June 2000

## What Can IFC 2x Do?

- Jeff Wix                                                                                                                                            June 2000

## What Can IFC 2x Do?

- Jeff Wix                                                                                                                                            June2000

## What Can IFC 2x Do?

**Maintenance History**

**Inventories**

- LBNL                                                                                                                                            vb: 7/8/2000

## HVAC Definitions 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: 7/8/2000

## Functionality Supported 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: 7/8/2000

## Planned BS-8 Functionality

**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 in *.ifc or XML format**
**building geometry**
**general and performance specifications of materials**
**general and performance specifications of quipment and furnishings**
**Export information to downstream applications in *.ifc or XML format**
**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: 7/8/2000

## EnergyPlus Simulation Engine

**E+ 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: 7/8/2000

## BS-8 Deliverables to the IAI

**Project explanation and summary (early)**
**definition of need and project rationale**
**scope of work**
**management plan (resources, participation, schedules)**
**AEC/FM industry process definitions (each)**
**process scope and definitions**
**process diagram(s)**
**definition of tasks and the corresponding use scenaria**
**Detailed analysis of information requirements for each defined process**
**identification of existing objects and the associated data types**
**definition of the proposed objects and the associated data types**
**list of disciplines/applications that are source or beneficiaries of information**
**documentation of issues raised in reviews and their resolution **
**Object definition tables**
**a spreadsheet with complete definitions of all proposed objects**

- LBNL                                                                                                                                            vb: 7/8/2000

## BS-8 Review Process

**Structured and systematic review of work**
**formal requests and summaries**
**regular schedule**
**regular review teleconferences**
**Incremental release of parts for review**
**schemata released for review at early, mid- and final state of development**
**concurrent work and conncurent review**
**Reviewers (complete list yet to be developed)**
**internal (SRG)**
**BS-8 international partners (BS-7 team, CSIRO)**
**HVAC software developers (E+ team, Keops, TRANSYS, ...)**
**industry members (ASHRAE, selected consulting engineers, manufacturers, utilities, etc.)**
**The IAI Technical Advisory Group (TAG)**
**Continuously updated issues/resolutions log**
**exposd on the public web site**

- LBNL                                                                                                                                            vb: 7/8/2000

## BS-8 Schemata Integration

**Spreadsheet-to-EXPRESS**
**Integration with the rest of the IFC object data model**
**Complete extension schemata documentation: schemata diagrams, semantic definitions, definitions of all object/attribute/relationship sets, all data types**
**EXPRESS definitions**
**EXPRESS-G flow charts**
**on-line documentation (interlinked HTML pages)**
**printable files**

- LBNL                                                                                                                                            vb: 7/8/2000

## Resulting Implementations

**Extension of BS Pro server**
**Extension of BS Pro E+ client**
**XML client?**
**??**

- LBNL                                                                                                                                            vb: 7/8/2000

## Processes Supported by BS-8

**Fully supported process: ****Building energy performance simulation**
**Implicitly supported processes:**
**   ****	****1.**** ****Dynamic load estimation**
**   ****	****2. HVAC design**
**   ****	****3. HVAC equipment selection**
**   ****	****4. Measurement and verification (HVAC view)**
**   ****	****5. Building performance metrics (HVAC view)**
**   ****	****6. HVAC system and equipment commissioning**
**   ****	****7. HVAC system and equipment retrofit**
**   ****	****8. HVAC system and equipment physical layout**
**   ****	****9. HVAC system and equipment product data (catalogues, external data bases)**

- LBNL                                                                                                                                            vb: 7/8/2000

## Processes Supported by BS-8

**Partially supported processes:**
**cost estimating**
**procurement**
**service**
**energy code compliance**
**maintenance**
**operations**
**fault detection and diagnostics**
**emergency response**
**construction and installation**
**utility billing and cost allocation**
**interference checking**
**HVAC construction documents**
**accessibility**

- LBNL                                                                                                                                            vb: 7/8/2000

## Heating & Cooling A-H Unit

- LBNL                                                                                                                                            vb: 7/8/2000

## Dual Duct VAV A-H Unit

- LBNL                                                                                                                                            vb: 7/8/2000

## Project Development Process

**Typical IAI**

**BS-8**

- LBNL                                                                                                                                            vb: 7/8/2000

## BS-8 Project IAI Schedule

- LBNL                                                                                                                                            vb: 7/8/2000

## BS-8 Info Exchange Environment

**Project web site:**
**up-to-date project information**
**file depository**
**issues/resolution log**
**Bi-weekly teleconferences**
**Face-to-face meetings**

- LBNL                                                                                                                                            vb: 7/8/2000

## BS-8 Project Web Page

**URL**
**	****	****http://eetd.lbl.gov/btd/****iai/bs8**
**Username with write privileges**
**	****	****bs8body**
**Password**
**	****	****hvac4iai**

- LBNL                                                                                                                                            vb: 7/8/2000

## BS-8 Project Leader

- LBNL                                                                                                                                            vb: 7/8/2000

**Thank you!**
**Questions?**

- LBNL                                                                                                                                            vb: 7/8/2000