Energy Strategies That Work Case Studies

Size: px

Start display at page:

Download "Energy Strategies That Work Case Studies"

Deborah Pope
5 years ago
Views:

1 Energy Strategies That Work Case Studies Jean Ascoli, Architect, CEM, Program Director for New Construction Smart Energy Design Assistance Center University of Illinois, Urbana Champaign

2 of Homeland Security Education Center of 2

3 of Homeland Security Education Center Implemented Strategies Roof insulation R-25 continuous insulation (vs. R-20 code min.) Wall insulation U total wall (vs. U code max.) Solar Heat Gain Coefficient (vs code max.) Heating Efficiency 88% (vs. 82% code min.) Sensible and latent heat recovery Condenser heat recovery 23.1% Energy Cost Savings (vs. ASHRAE ) of 3

4 Karl J Jacobs Center for Science and Math of 4

5 Karl J Jacobs Center for Science and Math Implemented Strategies Roof insulation R-30 continuous insulation (vs. R-20 code min.) Solar Heat Gain Coefficient 0.32 (vs code max.) Lighting Power Density 0.71 W/sf (vs. 1.2 W/sf code max.) VAV with reheat and Active Chilled Beam w GSHP, ERV, and economizer 42.1% Energy Cost Savings (vs. ASHRAE ) of 5

6 of 6

7 Before After of 7

8 LEED Silver project Implemented Strategies Roof insulation R-22 continuous insulation (vs. R-15 code min.) Wall insulation U total wall (vs. U code max.) Solar Heat Gain Coefficient 0.38 (vs code max.) Heating Efficiency (condensing boiler) 90% AFUE (vs. 80% code min.) VFDs on chilled water loop Air cooled cooling tower with heat recovery option 13% Energy Cost Savings (vs. ASHRAE ) of 8

9 Offices, Warehouse, Fabrication of 9

10 22,500 sf Implemented Strategies Roof insulation R-25 continuous insulation (vs. R-15 code min.)* Wall insulation U insulated panels (vs. U code max.) Solar Heat Gain Coefficient 0.37 (vs code max.) Cooling Efficiency 5.0 COP (vs. 2.8 COP code min.) *ASHRAE of 10

11 Savings results Measure Annual Electric Savings Annual Gas Savings Annual Maintenance Savings Total Annual Savings Additional Implementation Cost Geothermal $290 $5,271 $1,080 $6,641 $52,000 Thermostat Setback $369 $0 $0 $369 $400 Warehouse Cooling Reduction $842 $0 $0 $842 $0 Warehouse Lighting $1,807 $0 -$129 $1,678 $5,451 Warehouse Daylighting $639 $0 $0 $639 $0 Office Lighting $271 $0 -$30 $241 $288 Totals $4,218 $5,271 $921 $10,410 $58,139 of 11

12 Burnham of 12

13 Burnham Recommended measures ECRM Annual Savings 4 Floor Insulation $13,978 Low-E Windows $97,617 South Façade Overhang $44,389 High Efficiency Lighting (Common Areas) $22,589 Heat Recovery (Corridors and Common Areas) $9,625 High Efficiency Chiller $22,727 4-Pipe Distribution System $112,328 High Efficiency PTAC $38,181 Low Flow Fixtures $19,562 VendingMiser & SnackMiser $1,120 Total $382,116 of 13

14 Burnham Implemented measures ECRM Annual Savings Low-E Windows $97,617 High Efficiency Lighting (Common Areas) $22,589 Heat Recovery (Corridors and Common Areas) $9,625 Total $129,831 of 14

15 New Student Services Center Addition Image Copyright - Perkins + Will 2012 of 15

16 Recommended Strategies High performance fenestration Beyond code insulation and air tightness requirements Solar shading HVAC controls and commissioning Enhanced lighting controls Additional Measures: Reduced Fenestration Area Sub-Metering Domestic Hot Water Energy & Water Use Reduction Occupancy Based Space Temperature Control Daylight Harvesting with Daylighting Tubes Owner-controlled plug load management strategies ENERGY STAR Building Certification 23% Energy Cost Savings (vs. ASHRAE ) of 16

17 Implemented Strategies High performance fenestration Beyond code insulation and air tightness requirements Solar shading HVAC controls and commissioning Enhanced lighting controls Additional Measures: Reduced Fenestration Area Sub-Metering Domestic Hot Water Energy & Water Use Reduction Occupancy Based Space Temperature Control Daylight Harvesting with Daylighting Tubes? Owner-controlled plug load management strategies? ENERGY STAR Building Certification? of 17

18 New Downtown of 18

19 New Downtown New Library and City Building Recommended Strategies High performance fenestration Beyond code insulation and air tightness requirements Solar shading HVAC controls and commissioning Enhanced lighting controls Additional Measures: Sub-Metering Domestic Hot Water Energy & Water Use Reduction Occupancy Based Space Temperature Control Daylight Harvesting with Daylighting Tubes Site and Parking Lot Lighting Efficiency Owner-controlled plug load management strategies 32% Energy Cost Savings (vs. ASHRAE ) of 19

20 New Downtown New Library and City Building Implemented Strategies High performance fenestration Beyond code insulation and air tightness requirements Solar shading HVAC controls and commissioning Enhanced lighting controls Additional Measures: Sub-Metering? Domestic Hot Water Energy & Water Use Reduction? Occupancy Based Space Temperature Control Daylight Harvesting with Daylighting Tubes Site and Parking Lot Lighting Efficiency? Owner-controlled plug load management strategies? of 20

.. But compared with the existing library the baseline code compliant building could use

21 New Downtown New Library and City Building The new building will be more than twice the square footage of the existing library... But compared with the existing library the baseline code compliant building could use ~24% less site energy per square foot The proposed building with all ECRMs implemented could use 51% less site energy per square foot. of 21

22 Presentations will be available at: presentations.sedac.org THANK YOU. Web site: Contact:

Funding and Assistance

Funding and Assistance Greg Swiss SEDAC Building Energy Specialist Smart Energy Design Assistance Center (SEDAC), University of Illinois at Urbana Champaign 1. Sources of Funding Incentives Grants 2. Sources