We’re moving in the direction of making that data a normal, automated process.”
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“They want stronger performance guarantees for both new designs and renovations, and they’re asking about the drivers of building performance. “Building owners are asking more often for in-depth analysis,” says Autodesk’s Kennedy. Now, energy results are automatically updated in Revit, the company’s native building information modeling program.
In its most recent subscription update, Autodesk made the GBS service available to anyone with a Revit Architecture or Revit MEP subscription and integrated its features into Revit’s massing feature. “This process results in more geometrically accurate models that take less time and budget to create, allowing our team to spend more time looking at the issues that matter,” says Spies. Glumac created the initial geometry in Revit, then was able to import it into Green Building Studio and export a file compatible with other advanced analysis tools, such as EnergyPlus or eQuest. “Traditional analysis would have been too cumbersome to address these questions within our budget or within a fast enough timeframe to provide meaningful feedback to the design team,” says Skander Spies, an energy analyst in Glumac’s Portland office. Glumac used GBS to quickly iterate energy consumption estimates for a variety of exterior shading devices, understanding energy use driven by landscape shading elements, and the effects of several different glazing configurations.
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The 67,000-sf project includes activity courts, locker rooms, aerobics facilities, and free weights.
Glumac’s scope of work included design review, whole building energy simulation, computational fluid dynamics analysis for natural ventilation, and sustainability consulting. Running off of the Web, our users can run these calculations from the cloud and perform them a lot faster than if they were tied to their desktop resources.”Įngineering firm Glumac, based in Portland, Ore., uses GBS for energy analysis on many of its projects, such as the University of Hawaii at Manoa Recreation Center.
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“They try out everything from type of glass to different levels of insulation, and each iteration requires a full simulation for proper energy use estimates. “Our users will perform 50 to 100 iterations of a design,” says John Kennedy, senior manager, sustainable analysis products for Autodesk AEC Solutions and the CEO of GBS from its founding in 2004 through its acquisition by Autodesk in 2008. By using gbXML-enabled applications, Green Building Studio Web service users can eliminate redundant data entry and dramatically reduce the time and expense traditionally associated with whole-building energy simulation analyses. Crucial to the integrated interoperability of the program is the gbXML schema, an open XML schema of the International Alliance of Interoperability’s aecXML group. It also creates geometrically accurate input files for EnergyPlus, the Department of Energy’s building simulation program. Available via subscription service at Green Building Studio uses the DOE-2.2 simulation engine to calculate energy performance. Green Building Studio is a Web-based tool that can help architects and designers perform whole building analysis, optimize energy efficiency, and work toward carbon neutrality earlier in the design process. Green Building Studio: Innumerable design iterations ‘What’s my energy cost going to be next quarter?’”īuilding Teams and facility managers are using these energy analysis tools to keep clients’ bottom lines low and meet regulatory requirements for energy saving. “What we see happening for facilities managers is they’re talking to CFOs more regularly and the question is always. “Energy is now a variable cost on the balance sheet, particularly with healthcare projects,” says Greg Turner, director of global offerings, Honeywell Building Solutions. Today, however, knowing exactly how much energy your building will produce and use is survival of the fittest as energy costs and green design requirements demand precision. Sure, many forward-thinking AEC firms ran their designs through services such as Autodesk’s Green Building Studio and IES’s Virtual Environment, and some facility managers used Honeywell’s Energy Manager and other monitoring software. Back in the halcyon days of 2006, energy analysis of building design and performance was a luxury.
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