Title 24 provides an alternative calculation method for demonstrating performance compliance with the non-residential provisions of the 2016 Building Energy Efficiency Standards, California Code of Regulations, Title 24, Part 6, and associated administrative regulations in part 1, Chapter (Standards).
Key features:
- Model geometry can be imported from SketchUp, Revit, DXF, gbXML and IFC.
- 2D drawings can be extruded automatically to a 3D model or built from scratch using ModelIT.
- Integrated data model shares input data across all VE modules including the VE-Navigator for ASHRAE 90.1 (LEED Energy), Dalylighting and Solar analysis modules.
- Edit multiple rooms for rapid data assignment.
- Input Data Visualisation – easily interrogate input data.
- Tabular editing feature to edit and review HVAC zone data, as well as export to Excel in order to easily share and review with clients and colleagues.
- Title 24 application approved for use with CBECC-Com 2016.2.1.
Energy Commission Approval
Installation
For general installation, please refer to the IES installation guide. CBECC-Com 2016.2.1 must also be installed, from the following:
Software Capabilities
The Title 24 IES VE module’s scope, features, and capabilities are listed below.
Scope
- Newly constructed buildings
- IES VE will produce results of the performance tests described in the 2016 Title 24 Nonresidential ACM Reference Manual.
Site/Building
- Include identifying information
- Include other general information required for compliance forms
- Include location information
- Identify climate zone and weather/design day files from the project site ZIP code
Envelope
- Provide a comprehensive list of accurately described opaque materials
- Combine materials into constructions
- Describe fenestration performance properties via the simplified approach (e.g., U-value, Solar Heat Gain Coefficient(SHGC), Visible Transmittance)
- Apply exterior insulated constructions to demising surfaces
- Check that proposed exterior constructions meet mandatory U-value requirements
- Remove user model building shades
- Retain user model geometry
- Adjust excess user model fenestration to standard design maximum window-to-wall ratio (WWR) and skylight-to-roof ratio (SRR) values.
Lighting and Other Internal Loads
- Replace user lighting systems with simple Light Power Density (LPD) values based on space function
- Allow simple lighting inputs for LPD and lighting schedules without the need to specify details of an interior lighting system
- Allow detailed lighting inputs for credits and allowances:
- Lighting Controls and associated power adjustment factors (PAFs)
- Area Category Lighting Allowances
- Tailored Lighting Allowances
- Replace user occupancy and equipment loads with Alternative Calculation Method (ACM)- specified values.
- Replace user-specified infiltration rates with ACM values
- Replace user-specified schedules with ACM schedules
- Combine space-level data into zones
Heating, Ventilating, and Air Conditioning (HVAC)
- Replace user-specified HVAC system with baseline system
- Baseline sizing run is autosized
- Baseline run hard sized using baseline sizing results
- Model user- specified HVAC systems with user-supplied sizing:
- Package single zone (PSZ)
- Single zone variable air volume (SZVAV)
- Package variable air volume (PVAV)
- Variable air volume (VAV)
- Package terminal air conditioner (PTAC)
- Package terminal heat pump (PTHP)
- Water source heat pump (WSHP)
- Four pipe fan-coil units (FPFC)
- Single Packaged Vertical Units (SPVAC and SPVHP)
- Baseboard heating
- Evaporative Cooling
- Exhaust Fans
- Dedicated outdoor air systems (DOAS)
- Plenum supply and return
- Series fan-powered VAV boxes
- CRAC and CRAH systems for computer rooms
- Heat Recovery for Air Systems with 100% Outside Air
- Special requirements enabled for process spaces (Computer rooms, kitchens, laboratories)
- Heating coils
- Gas furnace
- Hot water
- Electric
- Direct expansion (DX) (heat pump)
- Cooling coils
- Boilers
- Hot water
- Gas
- Electric
- Natural draft
- Mechanical draft
- Chillers
- Screw
- Reciprocating
- Centrifugal
- Air-cooled
- Water-cooled
- Absorption (Hot water)
- Chilled water loop pumping
- Primary only
- Primary-secondary
- Economizers (Airside & Waterside)
- Economizer Controls
- Fixed temperature
- Differential temperature
- Fixed enthalpy
- Differential enthalpy
Domestic Water Heating
- Residential domestic hot water (DHW) systems for residential occupancies
Output
- Report simulation errors and warnings including useful descriptions
- Report number of hours with setpoint not met by thermal zone
- Report energy consumption by fuel and end-use
- Report time dependent value (TDV) energy by end use
- Report TDV energy comparison of Proposed and Standard Design, including Compliance Margin
- Generate “PRF-01” summary compliance form
Interface
- Ability to access and modify parameters needed to simulate the above
- Option to perform simulations in two modes:
- Proposed Only (applies rules and simulates the Proposed Design)
- Proposed and Standard (applies rules and simulates the Proposed and Standard Designs
Documentation
- Release Note available with each IES VE version release
- IES VE Title24 User Guide