Rapid Energy Modeling (REM) Workflow Insert base name

Technology Description Rapid Energy Modeling (REM) technology was demonstrated in order to determine if the workflow is capable of producing useful, rapid and cost-effective estimates of energy consumption for DoD buildings REM technology, including the Energy Conservation Measures (ECM) capabilities, uses whole-building energy simulation algorithms driven by the Department of Energy (DOE) 2.2 engine for energy analysis The REM workflow involves three stages: (1) capture of existing conditions, (2) conceptual modeling of building masses using FormIt, Revit and Vasari, and (3) comparative analysis. The energy results of these building analyses are represented as annual energy use for natural gas and electric, monthly and annual cost, monthly energy use and energy use intensity

How Does It Work Existing building geometry is captured using satellite photos. The operational characteristics of the building are appended to the geometric model and the local weather data to generate energy models to extrapolate the energy use of the modeled buildings. This modeling information can be used to assist managers determine building performance compared to predicted energy use.

Benefits of the Technology Quickly establish building geometry Scale energy analysis of the existing building portfolio Visualize end-use breakdowns of energy consumption Compare tradeoffs and potential energy savings between energy conservation measures automatically Identify and rank underperforming facilities Enhance scalability of energy evaluations and retrofits REM can yield >90% savings in time and cost compared to traditional ASHRAE Level 2 auditing approaches

Technology Success Stories Technology has been successfully Demonstrated by ESTCP at 23 DoD buildings across nine locations and representing seven building types REM analysis can be completed in less than 1 hour, with up to 2 additional hours that may be required for data collection. The modeling process requires minimal training or expertise and has been taught to DoD staff in less than 1 day during this demonstration project. ESTCP Demonstration Sites: Fort Leonard Wood Port Hueneme Joint Base Lewis-McChord Portsmouth Naval Shipyard Naval Station Great Lakes Seymour Johnson Air Force Base Naval Surface Warfare Center – Panama City U.S. Army Construction Engineering Research Laboratory (ERDC-CERL) Naval Weapons Station Earle

Potential Challenges and Solutions Focusing on these building systems and their operation adds large amounts of data to manipulate and manage to a process whose goal is to remain rapid and agile. Engineers and energy analysts who want to do more detailed analyses can move REM data to eQuest or EnergyPlus for detailed work in those tools, which may require more expertise and detailed inputs. REM can yield substantial time savings versus initial model creation in eQuest or Energy Plus tools Improperly Identified building and operational attributes of a particular building can impact modeling results. This is a general limitation of simulation

Sample Financial Considerations The operational costs after the up-front expenditures would be $300 per building modeled with this process multiplied by the number of buildings studied at an installation

Bottom Line Pros Offers a level of detail not obtained through simple benchmarking Significantly less cost than standard Level 2 energy audits Develops a starting point in understanding how the studied building is operating using a model derived from a large set of existing buildings that are operating correctly Cons REM does not provide the detail of investment grade energy audits and does not cover some aspects of a Level 2 energy audit (such as equipment inventories and estimating costs for ECMs), although it does include computer simulation often part of Level 3 audits.

Where to Learn more Mr. Tim Tetreault, ESTCP Energy and Water Program Manager, 571-372-6397 SERDP-ESTCP Website, https://serdp-estcp.org Mr. John Sullivan, POC at Autodesk, 301-529-7165, john.sullivan@autodesk.com Installations: Ms. Annette Stumpf, ERDC-CERL, 217-373-4492, Annette.L.Stumpf@usace.army.mil Mr. Gil Lurdes, Naval Weapons Station Earle, 732-866-2319, Lurdes.Gil@navy.mil Mr. Allen Simpson, Fort Leonard Wood, 573-596-0956, Allen.W.Simpson2.civ@mail.mil Mr. Peter Behrens, Naval Station Great Lakes, 847-688-2121, Peter.Behrens@navy.mil Mr. David Krohn, Joint Base Lewis-McChord, 253-966-1853, David.A.Krohn.civ@mail.mil Ms. Evelyn Baskin, NSWC Panama City, 850-230-7176, Evelyn.Baskin@navy.mil Mr. Randy Pieper, Peterson AFB, 719-556-9590, Randall.Pieper.ctr@us.af.mil Mr. Brian Ballweg, Port Hueneme, 805-982-1250, Brian.Ballweg@navy.mil Mr. Lance Mahar, Portsmouth Naval Shipyard, 207-438-5980, Lancha.Mahar@navy.mil Mr. Elias Schtakleff, Seymour Johnson AFB, 919-868-9179, Elias.Schtakleff@seymourjohnson.af.mil

Backup Slides

The REM process involves the following technologies: Autodesk® FormIt software is an iOS and Android operating system application to create 3D models. FormIt captures existing building conditions using satellite images from Google and allows users to create a 3D geo-referenced building model while in the field. Autodesk® Revit is a BIM software application with integrated energy and carbon analyses driven by Green Building Studio (GBS) and Department of Energy (DOE) 2.2. Autodesk® Vasari software is for creating building conceptual models, with integrated energy and carbon analyses driven by GBS and DOE 2.2. Autodesk® GBS is a web service that performs whole building energy analysis using the DOE 2.2 engine

Demonstration Performance Objectives

Demonstration Performance Objectives

Demonstration Performance Objectives

Demonstration Performance Objectives

Demonstration Performance Objectives