The U.S Department of Energy (DOE) and the U.S. National Labs released updated versions of open-source whole-building energy modeling tools: the EnergyPlus engine and the OpenStudio software development kit (SDK) and application.
EnergyPlus 8.9.0 includes the ability to accept input in a JSON (Java Script Object Notation) format called epJSON. epJSON is derived from the existing IDF format and shares its object structure.
The JSON key-value structure supports schema validation as well as faster object and field lookups, and should make EnergyPlus schema evolution (e.g., the addition and deprecation of fields) simpler, DOE says.
EnergyPlus 8.9.0 includes:
- An On/Off thermostat model
- An option to disable “self-shading” effects
- The ability to import shading schedules for a file
- PVWatts calculations for estimating photovoltaic electricity production
- A data driven model for hybrid air conditioners
- Enhancements to data center modeling
- New sizing and annual reporting options
EnergyPlus is available at http://energyplus.net/.
An upgraded version of OpenStudio 2.5.0, with new features is available at http://openstudio.net/. A key new feature in this release is support for EnergyPlus EMS (Energy Management System) sensors and actuators.
Related Stories
Multifamily Housing | Apr 16, 2015
Seattle’s size restriction on micro apartments blamed for rise in rents
Seattle’s city planner recently said that the council’s new rules have made small apartments more expensive to build and charged the board with “overreaching” and not giving micro-housing “a fair shake.”
Green | Apr 16, 2015
New version of Building Energy Data Exchange Specification launched
BEDES is a dictionary that facilitates consistent exchange of building characteristics and energy use data between tools and databases in the building energy efficiency sector.
Codes and Standards | Apr 16, 2015
New York tops U.S. cities in walkability
Revitalization pushes Detroit and New Orleans up the rankings
Green | Apr 14, 2015
USGBC will recognize energy and water standards for the Living Building Challenge
This move means that projects achieving the energy and water requirements in Living Building Challenge will be considered as technically equivalent to LEED.
Codes and Standards | Apr 14, 2015
New York City preparing new codes for evacuation elevators
New York City’s Fire, Buildings, and City Planning Departments in New York are writing rules to govern occupant-evacuation elevators, reflecting a change in philosophy of how to evacuate people from skyscrapers in an emergency.
Codes and Standards | Apr 12, 2015
California imposes stringent new water standards
California is the first state to adopt standards that are more efficient than those set by EPA's WaterSense program.
Codes and Standards | Apr 12, 2015
Virginia surpasses Florida for strictest hurricane building codes
Virginia has edged out Florida as the state with the most stringent hurricane building codes, according to the Institute for Business and Home Safety’s “2015 Rating the States” report.
Codes and Standards | Apr 6, 2015
Industry groups petition for change order reform on federal projects
Nine design and construction associations ask for assurance that funds available for additional work.
Codes and Standards | Apr 6, 2015
DOE releases Better Buildings Workforce Guidelines
The guidelines are aimed at strengthening and streamlining commercial building workforce training and certification programs for workers in energy auditing, building commissioning, building operations, and energy management.
Green | Apr 3, 2015
Georgia may ban use of LEED on state buildings
Georgia's state legislature is considering a measure to require all state buildings to only use green building standards that permit the use of Georgia's lumber.