1 / 23

Energy Audits

Energy Audits. Building Energy Brent Mellen Scott Gardner. Services & Expertise: Energy Audits Insulation & Weatherization Solar Power Solar Hot Water Bio-fuel Boilers. Energy Audit Process. Site Visit: Check Heating System Blower Door Test Energy & Indoor Air Quality Inspection

stash
Télécharger la présentation

Energy Audits

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Energy Audits Building Energy Brent Mellen Scott Gardner

  2. Services & Expertise: • Energy Audits • Insulation & Weatherization • Solar Power • Solar Hot Water • Bio-fuel Boilers

  3. Energy Audit Process • Site Visit: • Check Heating System • Blower Door Test • Energy & Indoor Air Quality Inspection • Infrared Photos • Energy Savings Evaluation • Recommendations, Incentive Opportunities & Quote • Follow-up

  4. Building Evaluation • Tour Building with Owner • Measure up • Square Foot Area • Ceiling Height • Walls, windows, doors

  5. Building Evaluation • R Values • Basement • Walls • Attic • Hazards • Knob and Tube • Vermiculite • Asbestos • Mold & Water Damage

  6. Heating System • Combustion Appliance Zone (CAZ) Testing of the boiler or furnace • System efficiency comparison • Distribution efficiency

  7. Blower Door Test Get Air Leakage Number • Benchmark energy use & air infiltration rates

  8. Energy Evaluation • Document Air Leaks • Windows & Doors • Outlets • Chimneys • Attics • Stairwells

  9. Energy Evaluation • Electrical: • Appliances • Lighting • Occupancy Sensors • Energy Metering

  10. Indoor Air Quality • Combustion Appliances • CO • Moisture • Vermiculite / Asbestos

  11. Infrared Photos

  12. On-Site Wrap-up • Measure for suitability of solar electric or hot water • Thank Customer

  13. Back at the Office • Report • Crunch Data, estimate heat loss • Create context for fuel use, electrical use, and air leakage • Recommendations with Pricing • Highlight most important and best energy saving measures • Incentive Report

  14. Case Studies – Lakeview Inn • +/- 9,500 square foot floor area of heated/living space • 2,760 gallons of oil = 381.2 million BTU • 40,126 BTU/square foot floor area, not fully occupied • 11,000 CFM50 Background

  15. Case Studies – Lakeview Inn • Air seal and insulate basement and crawlspaces • Air seal and insulate floor below heated/cooled space • Air seal and insulate accessible 2nd floor frame areas (frozen pipes) • Replace heating system Major Opportunities

  16. Case Studies – Lakeview Inn Savings and Costs • Savings • 23% reduction in air leakage • +/- 18% reduction in heating energy savings for envelope improvements only • $1,353 per year savings • 20% or more savings in heating fuel consumption for boiler upgrade, fuel switch, elimination of glycol • Additional electrical savings • Costs • $14,325 envelope, not including maintenance staff labor • $2,183 Efficiency Vermont incentive • $12,142 Net Cost • Benefits • 9 year simple payback, 11% ROI • Increased comfort, less maintenance, no more frozen pipes, etc…

  17. Case Studies – Charlotte Town Hall • 4500 square foot floor area of heated/office space • 2,100 gallons of oil = 289.6 million BTU • 64,296 BTU/ square foot floor area • 12,184 CFM50 Background

  18. Case Studies – Charlotte Town Hall • Major Opportunities • Air barrier above ceiling • Reduce HVAC system size • Install ERV system • Insulate duct work • Re-insulate the meeting room kneewalls and cathedral ceiling • Insulate exterior slab wall • Insulate exterior walls

  19. Case Studies – Charlotte Town Hall Scope of work (Work In Progress) • Air barrier above ceiling • ~ 18% air infiltration gain! • Install super-efficient ERVs • Installed separate systems in East and West building sections • Fully insulated ducts, run in the conditioned space to reduce heat loss • Knee-wall insulation • Retrofit 2 light fixtures & 3 exit signs

  20. Case Studies - Williston Town Hall Background • 6,010 square foot floor area of heated/office space • 3,673 ccf natural gas = 404 million Btu • 61,114 BTU/square foot floor area • 5,200 CFM50

  21. Case Studies - Williston Town Hall Major Opportunities • Re-insulate and air seal the attic • Remove A/C ducts in the attic • Replace heating system with two smaller, more efficient units • Replace hot water tank with smaller unit or on-demand

  22. Opportunities, Benefits & Paybacks • Long-term energy savings • Reduce carbon emmissions • Reduce reliance on foreign energy sources • Audits sometimes identify huge energy improvement opportunities with quick pay-backs. • Grants • State and Federal Incentives • Better air quality & more comfortable environment • Reduces sick days • Happier employees

  23. Thank you Building Energy Williston, White River, Middlebury

More Related