IESVE 2018

New Features & Enhancements

What's new?

With ease of use and faster simulation times at the heart of this release, VE 2018 brings greater capability and increased functionality that’s both in line with industry developments and in response to customer feedback. Take a tour of all the latest features below.

VE Start-up Interface

Upon opening IESVE 2018 Software you will be welcomed with a new start page. Features include:

  • Pinned Weather data of your most common location settings
  • New Project creation: Prototype model import options, including ASHRAE 209 prototype models
  • Dynamic information of new events and online content (new scripts, reports, etc.)

Both new and experienced users will use the new start page as a launching point into their IESVE model.

Simulation Speed Enhancements

Simulations are now ~10 times faster by utilizing the new parallel simulation mode feature. Simulations can be divided by:

  • Number of cores available
  • Number of months (user choice)

Once the divided simulations are complete, they are automatically joined back together into one simulation result set.

Note: This feature is keyed separately. Please contact

New ASHRAE 90.1 Enhancements

  • Updated ECB (2010/2013) and PRM (2007/2010/2013) Reports
  • Zone grouping assignment
  • Automatic Receptacle controls
  • Optimal Start of HVAC Systems
  • Chilled water supply temperature reset

New NECB Navigator for Canada

New NECB (National Energy Code of Canada for Building) Navigator. Features include:

  • Streamlined workflow
  • Automatic creation of NECB Reference Building
  • Automated Reports

New VRF (Variable Refrigerant Flow) Capabilities

Detailed VRF capabilities in ApacheHVAC.

  • Air source VRF with heat recovery
  • Water source VRF with heat recovery
  • Fully integrated with detailed HVAC modeling (e.g. for ASHRAE 90.1 etc.)
  • Complete with performance curve data sets
  • Auto-sizable prototype systems available

New DHW (Domestic Hot Water) Feature

Detailed DHW capabilities in ApacheHVAC

  • Multiple DHW loops, with/without recirculation
  • Integrated with heat recovery, storage tanks, etc.
  • DHW Demand and DHW Zones set by room-level or zone-level input

Fully integrated with detailed HVAC modeling.

  • Simple or explicit DHW system model
  • Pre-heating via condenser heat recovery and/or solar water heater
  • Coupling to hot water loop via explicit heat exchanger model
  • Storage tank
  • Recirculation
  • Pump

New Loads (+Energy) Calculations Enhancements

  •  ASHRAE Design Weather upgraded to version 6 (2017 Handbook of Fundamentals)
  • Enhanced HVAC Inputs in Building Template Manager, linked to ApacheHVAC
  • Visualization of heating/cooling design loads results onto model viewer (previously only energy results)
  •  System schedules & Setpoints enhancements
  •  Ground-contact floor calculation improvements
  •  Report improvements (RH values and SHR)

Streamlined, more transparent, and more flexible System Schedules and Setpoints

  • Reduced dependence on profiles; greater presence in user interface
  • Streamlined, more transparent, more flexible
    • Fully integrated with Thermal Templates and Space Data
    • Improved user workflow
    • Much fewer profiles; clearer relationship
    • Greatly expanded visibility, editability, and flexibility of schedules & setpoints
    • Accessible, flexible, and transparent controls sequencing relative to setpoints
  • Optimal Start control

Space Data Integration with System Parameters UI in ApacheHVAC

  • For ApacheHVAC Methodology, ventilation requirements and other Room-level  parameters set in Room Data and Room Thermal Templates passed to ApacheHVAC
  • Room values, such as ventilation, are summed for Zones in HVAC
  • Color-coded values can be edited or refreshed in ApacheHVAC.
  • Temp and humidity edited in ApacheHVAC feedback to Room Data.
  • Coordinated with PRM Navigator

Additional HVAC Enhancements

  • Optimal Start control for airside systems
  • Variable flow condenser water loop
  • Chilled water loop Supply Water Temperature reset per coil flow
  •  Improvements to System Parameters user interface
  •  Independent design-day scheduling and diversity settings for internal gains for Room/Zone Loads vs. System Loads vs. full dynamic Simulation
  •  New prototypes in the HVAC system library, including:
    • VAV systems with side-stream exhausted space (e.g., WC) drawing transfer air from the Principal space on the same layer (e.g., corridor)
    • Ventilation air separately delivered to Zone in a DOAS
    •  Air-source and water-source VRF systems with DOAS for ventilation

New Daylight Simulation Enhancements

  • Spatial Daylight Autonomy (sDA) & Annual Sunlight Exposure (ASE) graphics improvements and shown on working plane of 3D model viewer
  • Contoured working planes
  • Global processing capability to entire model for sDA and ASE
  • Rule-based daylight-sensor locations (e.g. by orientation) for daylight-harvesting

New Online Resources

  • Content Store for Scripts, reports, formula profiles, weather files, templates, HVAC systems, spreadsheets, etc. This video highlights a number of the VE Python Scripts available in the IES Content Store.
  • Searchable website for Help (no PDFs)
  • User-group website for beta-testing & enhancement requests

Other New Features

  • BIM Navigator Enhancements
  • High-concentration Photovoltaics. Watch the video
  • Solar-shading control enhancements
  • Scripted profiles (python scripts within formulae profiles)
  • Right-mouse click options
  • Model Viewer and VistaPro Enhancements
  • Unmet Load Hours reporting
  • Variable-flow condenser water loop

Free Web Demos

Join our free live web demos to find out more about IESVE. 

Got a question?

Our team is happy to answer any questions you have.