Energy Efficiency in Existing Buildings, New Buildings and Large-Scale Application

Transcription

1 German American Smart Buildings Symposium 2013 Energy Efficiency in Existing Buildings, New Buildings and Large-Scale Application March 13, 2013 Center for Architecture, Philadelphia, PA Oliver Baumann

2 Ebert & Baumann Consulting Engineers, Inc. Professional Design & Consulting Services for the Entire Building Life-Cycle 2

3 Ebert & Baumann Consulting Engineers, Inc. Professional Design & Consulting Services for the Entire Building Life-Cycle LEED EB O&M Due Diligence Operation Concepts CAFM Design Review Energy Efficiency Building Physics Life-Cycle-Cost Analysis Operation Prognostics MEP Design Energy Audits Commissioning Operation Diagnostics Measurement & Verification Energy Performance Labeling Energy Modeling Performance Modeling CFD Simulation Fire/Smoke Simulation Daylight Simulation Acoustic Simulation LEED Consulting Green Building and Sustainability Concepts Energy Efficiency and Green Technologies 3

4 Energy Efficient Buildings The Potential Case Studies [315.3] End Energy kbtu/ft²yr [kwh/m²yr] Scenarios USA current status 90 [283.3] Commercial Existing Buildings (Source: 2003 CBECS) ASHRAE HQ Renovation before 80.6 [ ] after 53.3 [178.3] 75.0 [236.7] USA, if all buildings would comply with code 70.7 [223.1] New Construction Base-Scenario (Source: ASHRAE Standard ) CBF 40 [126.9] Big Horn 40 [124.7] Cambria 37 [116.1] Oberlin 30 [93.9] TTF 29 [90.0] Zion 27 [85.3] GMS 13.6 [43.1] 50.0 [157.8] 25.0 [78.9] USA with State-of-the-Art Technology 40.3 [127.2] Best Energy Efficiency Technology (Source: Griffith et al. 2007) USA with additional Renewable Energy 12.2 [38.6] Best Energy Efficiency Technology + PV 0.0 5

5 Energy Consumption Energy Efficient Buildings The Potential Energy Consumption in Different Building Categories in the U.S. Compared to Germany Source: DOE Commercial Buildings Energy Consumption Survey (CBECS) 2003; AGES Verbrauchskennwerte 2005 / VDI kwh/m²a Energy Consumption Survey [Site Energy] 300 kwh/m²a 250 kwh/m²a 200 kwh/m²a 150 kwh/m²a US Germany 100 kwh/m²a 50 kwh/m²a 0 kwh/m²a Schools Universities Education Lodging Offices Building Types 6

6 Energy Efficiency for Existing Buildings Free Library of Philadelphia Scope: Assistance with Proposal to Department of Energy (DOE) and its Energy Efficient Buildings Hub Level I Energy Audit Finished: Conducted a preliminary energy-use analysis, walkthrough survey, identification of low-cost /no-cost recommendations and capital improvements Baseline - Current Total Energy Consumption: EUI of 86 kbtu/ft2/year Estimated Energy Consumption after Energy Conservation Measures (ECMs) Implementation: EUI of 52 kbtu/ft2/year Circa 40% energy savings projected only with implementation of EB recommendations from walk-through analysis 7

7 Energy Efficiency for New Buildings Chesapeake Bay Foundation (CBF) Hampton Roads Environmental Center 10,000 SF, Living Building Challenge and LEED Platinum project to be constructed at Pleasure House Point, Virginia Beach, VA. Project Features High Performance Building Envelope External Shading Dedicated Outdoor Air System (DOAS) Ground Source Heating and Cooling Natural Ventilation Challenges Net-Zero Energy Net-Zero Water Highest Occupants Comfort Large and Fluctuating Occupancy Flexibility 8

8 Energy Efficiency for New Buildings Optimizing Energy Efficiency through Simulation Envelope Optimization Insulation + energy savings : 11% energy saved Point of diminishing returns Commissioning Calibration Measurement & Verification Reduce cost of PV Reduce cost of overall project System Comparison System 1 System 2 System 2 saves 5% initial cost vs.life cycle cost Natural Ventilation Natural ventilation study 365 hrs available during occupied time LEED Model Predictive Model Fine tuning the design to get the model as close to real operation as possible 12/ Weekdays WinterDesignD0% 0% 0% 0% 0% 0% 0% 0% ## ## ## ## ## ## ## ## ## 0% 0% 0% 0% 0% 0% 0% Saturday 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% Sunday 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% AllOtherDays 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 12/ Weekdays WinterDesignD0% 0% ## 0% 0% 0% ## ## ## ## ## ## ## ## ## ## ## ## ## 5% 0% 0% 0% 0% Saturday 0% 0% ## 0% 0% 0% 0% 0% 1% 3% 6% 9% ## ## ## ## ## ## ## 5% 6% 5% 2% 0% Sunday 0% 0% ## 0% 0% 0% 0% 0% 1% 3% 6% 9% ## ## ## ## ## ## ## 5% 6% 5% 2% 0% AllOtherDays 0% 0% ## 0% 0% 0% 0% 0% 1% 3% 6% 9% ## ## ## ## ## ## ## 5% 6% 5% 2% 0% 06/ Weekdays WinterDesignD0% 0% 0% 0% 0% 0% 0% 0% ## ## ## ## ## ## 0% ## ## ## ## ## ## 0% 0% 0% Saturday 0% 0% 0% 0% 0% 0% 0% 0% ## ## ## ## ## ## ## ## ## ## ## ## ## ## 0% 0% Sunday 0% 0% 0% 0% 0% 0% 0% 0% ## ## ## ## ## ## ## ## ## ## ## ## ## ## 0% 0% AllOtherDays 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 62 kwh/m² Predicted EUI of 22.5 kbtu/sf/yr 19 points 73.9% cost savings compared with the appendix G LEED baseline 75 kwh/m² 9

9 Energy Efficiency on Larger Scale - Integrated Energy Master Plan (IEMP) for Drexel University Campus Energy Planning Gross Floor Area: ~ m² / ~ 3,375,000 ft² Estimated Population*: 24,000 (students & staff) Current GHG Emission: N/A Future GHG Emission: reduction of 60% Energy Savings: 30% *according to university s website Project Description: Energy planning for entire collegiate campus: - to enhance the economic competitiveness, - to ensure reliable and affordable energy supplies, and - to demonstrate a long-term commitment to environmental responsibility. Services Provided: Energy Modeling, Energy Conservation Measures Phase 1: Modeling of the current building inventory energy use. Phase 2: Analysis of different future energy use scenarios based on anticipated energy efficiency improvements for buildings 10

10 Energy Efficiency on Larger Scale - IEMP for Drexel University Establish Utility Baseline by Building Types Utility Baseline of Representative Buildings Samples Electric Gas Steam Gas Total Electric (MWh/y) (MWh/y) (MWh/y) (MMBtu/y) (MWh/y) (MMBtu/y) 9b MacAllister Hall 3, ,297 5,620 11, ,840 19, Towers Hall 3, ,015 10, , Disque Hall 2, ,004 4,903 9, ,838 16, Daskalakis Athletic 3, ,283 6,243 Center 12, ,792 21, Hagerty Library 1, ,993 5, ,322 6,803 Utility Baseline of Campus by Building Category Building Category / Function Electric (MWh/y) Gas (MWh/y) Steam (MWh/y) Total (MWh/y) Electric (MMBtu/y) Gas (MMBtu/y) Steam (MMBtu/y) Total (MMBtu/y) Acad/Admin Classrooms/Offices 24,807 1,699 13,379 39,703 84,667 5,799 45, ,506 Residential Residence Halls/Houses 19,332 6,396 2,319 27,905 65,981 21,829 7,914 95,238 Sci. Research Labs 9,523 3,545 4,651 17,912 32,501 12,098 15,873 61,133 Athletic Sport Facilities 5, ,283 8,532 18,507 2,955 7,792 29,118 Student Life Theater, Library, 3, ,430 4,914 10,619 1,352 4,879 16,772 Support Security, Tool sheds , ,226 Total 62,356 13,493 24,061 99, ,820 46,052 82, ,993 Modeling Matched to Metered Data

11 Energy Efficiency on Larger Scale - IEMP for Holland, MI Single House Family Modeling Project Description: - to enhance the economic competitiveness, - to ensure reliable and affordable energy supplies, and - to demonstrate a long-term commitment to environmental responsibility. - To reduce energy use of entire city by 30% in 30 years. Services Provided: Energy Modeling, Energy Efficiency Scenarios, Life- Cycle-Cost Analysis Phase 1: Modeling of the current building inventory energy use. Phase 2: Analysis of different future energy use scenarios based on anticipated energy efficiency improvements for buildings 12

12 Energy Efficiency on Larger Scale - IEMP for Holland, MI Result Alternative Energy Supply Scenarios City Fuel Mix Post-IEMP Decision Pre-IEMP Choice Decisions Based on Facts not Emotion

13 Energy Efficiency on Larger Scale - IEMP for Holland, MI Holland, MI High School Students Explain the IEMP: 14

14 German American Smart Buildings Symposium 2013 Energy Efficiency in Existing Buildings, New Buildings and Large-Scale Application March 13, 2013 Center for Architecture, Philadelphia, PA Thank You! Questions? Oliver Baumann 16