Busting The Myths of LED Lighting and Geothermal Opportunities. Presented by the IASBO Sustainability Professional Development Committee- May 1, 2014

Transcription

1 Busting The Myths of LED Lighting and Geothermal Opportunities Presented by the IASBO Sustainability Professional Development Committee- May 1, 2014

2 Myths are an idea or story that is believed by many people but that is not true- Merriam Webster definition There are many myths surrounding two energy saving technologies that need to be busted! The technologies are LED Lighting and Geothermal HVAC systems

3 The myths of LED Lighting and Geothermal HVAC systems are common to both: It s too expensive to do It doesn t work Our architect and/or engineer looked at it and rejected it We already have our plans put together Nobody else is doing it

4 We are here to BUST these myths and invite you to consider both technologies for your future energy efficiency projects There is money available from several sources to help you implement such projects First, we will hear from Scott Gaunky of Lincolnshire- Prairie View SD 103 on how they implemented LED lighting in their district

5 Considerations for LED Lighting Return on investment (ROI)- met district s criteria Installation location- consulted with teachers and staff UL rating/ heat dissipation- used DLC approved fixture from large manufacturer Required light levels- met or exceeded previous levels with added total dimming capability in the hands of staff Do your research- answer all questions and seeing is believing Apply for available grants- IL DCEO incentives for both indoor and outdoor applications

6 Laura Sprague Elementary Renovation Phase 1 Summer 2012 Removal of 2x4 troffers and 1x4 T8 ceiling mounted fluorescent fixtures in 30 classrooms and all hallways. Removal and replacement of all emergency lighting and exit signs w/ LED. Installation of 541 2x4 LED troffers, 25 LED can lights, occupancy sensors in all rooms, and all classroom fixture have full dimming capabilities.

7 Laura Sprague Elementary Renovation Phase 2 Summer 2013 Remove and replace remaining fluorescent fixtures in library, hallways, small educational spaces, and offices. Approx. an additional 154 2x4 fixtures. Removal and replacement of 27 exterior wall packs, 12 soffit, two parking lot lights (add an additional 5 poles). Occupancy sensors, motion detection, and computerized lighting control system

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12 Now we will hear from Luann Kolstad, Business Manager from Prospect Heights School District 23 about how she overcame obstacles to implementing a successful Geothermal HVAC Retrofit of four of their buildings The Prospect Heights SD 23 Journey!!!

13 Who We Are: Elementary School District: Serving 1500 students Two Campuses Five Buildings: 1 Middle School (Main Campus) 6 th 8 th Grades 1 Grade School (Second Campus) Pre-K 1 st Grades 1 Grade School (Main Campus) 2 nd 3 rd Grades 1 Grade School (Main Campus)4 th 5 th Grades 1 Administration Building (Main Campus)

14 In the Beginning.. District faced with Deferred Replacement of Mechanicals in all Buildings: Obsolete Unit Ventilators and Controls Boilers at end-of-life and beyond AHU at end-of-life and beyond Existing HVAC Systems in locations where A/C was all reaching end-of-life 3 Schools No Air Conditioning except offices.

15 At a Cost of.. $5,145,875 - Replacement of only Priority Mechanical Items. Priority Maintenance Items Account for only ½ of Necessary Mechanical Replacements! Cost does not include adding air conditioning. $3,629,000 Estimate from 2008 to add air conditioning to three buildings. $8,774,875 Total for both.

16 Now What do we Do? If we decide that students really do not need air conditioning, after all we all suffered in classes of 40 students after walking to school barefoot, uphill both ways! Then our total cost before architectural fees, etc. is $5,145,875. But, this only fixes half of our priority maintenance items!

17 Looking at Other Options.. Geothermal heating and cooling is that an option? But. It is too expensive! Are you fracking! Are you going to cause an earthquake! What about my drinking water are you polluting it? Will there even be any water left to drink! Are you heating up the earth s core?

18 The Answer.. $6,203,064 Estimated Total Cost before architectural fees of Geothermal Heating & Cooling in Four Schools. Project will result in replacement of ALL mechanical systems in four schools. Minimal maintenance for at least 20 years! Domestic Hot Water Heaters are only use of Natural Gas = Decreased Gas Bill!

19 Summer 2013: Here we Go! MacArthur Middle School Converted to Geothermal Heating & Cooling Two Well Fields Drilled: Central Campus field 120 bore holes at a depth of 500 feet. Sized to serve middle school, two grade schools and administration building. Eisenhower Campus 32 bore holes at a depth of 500 feet. **We call it Bore Holes instead of Wells **

20 First Winter Results

21 In Graphic Form February 2014 Usage Comparison MacArthur MS: 110,000 sf used only 352 therms My Humble Home of 2,900 sf used 254 therms

22 Geothermal Drilling Will drill 7000 feet/week dependent on conditions. Bore holes are 5 inch in diameter. MacArthur: 120 bore holes at a depth of 500 feet Eisenhower School: 32 bore holes at a depth of 500 feet. There will be some pounding noise associated with drilling as drills go through rock

23 Geothermal Drilling Piping: Piping installed in bore holes is a closed loop system. Piping material is a high density polyethylene material designed for geo applications. Material carries 50 year warranty. Think yellow natural gas pipe. Solution flowing through pipes: 80-85% water, 15-20% food grade propylene glycol Project overseen by IGSHPA (International Ground Source Heat Pump Association), NGWA (National Ground Water Association) and IDPH (Illinois Department of Public Health).

24 Now we will get a quick overview of Geothermal Technologies and how the Geothermal Alliance of Illinois can help you get the right information for your geothermal project John Freitag, Executive Director, will discuss Geothermal- the right choice for schools

25 Busting The Myths of LED Lighting and Geothermal Opportunities Geothermal= Ground-source heat pump GeoExchange Geo-exchange Geothermal heat pump Earth-coupled heat pump Geo Earth Energy

26 GOALS Saving energy and dollars typically 50% lower energy bills. Geothermal provides heat AND cooling one system. Saving on maintenance. Comfort/health in the classroom. Be green on the environment. Minimize budget impact.

27 HVAC Mechanical Systems should enhance learning Noise Temperature control and adjustability Humidity control Allergen control Ventilation Efficiency Adaptable to changing education environment

28 Why Geo? Operating savings of 50 percent in energy usage -- common. Low maintenance cost, easy. Comfort and enhanced teaching environment. Why not? Higher initial cost. Technology can be more complicated than traditional HVAC. Limited space - need for earth-loop.

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30 Busting The Myths of LED Lighting and Geothermal Opportunities The simple view of what geothermal does Uses the earth s free energy for heating in the winter and cooling in the summer

31 Busting The Myths of LED Lighting and Geothermal Opportunities The traditional closed loop outside system with a twopipe installation and conventional geo equipment either a series of smaller residential sized heat pumps, or larger commercial sized heat pumps. (Loops could be installed vertically in boreholes up to 500 feet deep or horizontally in a trenched configuration, approximately 6 feet deep or more.)

32 Busting The Myths of LED Lighting and Geothermal Opportunities Another version- common in schools- the one pipe system In this version, the loop field is connected to the individual geothermal units inside the facility, with a single, large geothermal pipe and all the individual units draw from that that pipe. Advantages are lower initial cost and efficiencies from different zones (rooms) within the school the might require heating and cooling at the same time. This system works as one to move that energy throughout the facility.

33 Busting The Myths of LED Lighting and Geothermal Opportunities Another version- a hybrid geothermal system In this version, a traditional geo installation would be coupled with a traditional cooling tower to meet the heating/cooling load of the building. Generally in this version, efficiency is traded for lower initial costs.

34 and Geothermal Opportunities- Common Pond Closed Loop

35 Busting The Myths of LED Lighting and Geothermal Opportunities Fairview Elementary School, Normal,IL Geothermal HVAC System retrofit 35,125 sq. ft. 24 classrooms One Pipe Design Provided heating and cooling system retrofit of existing hot water unit vent system Operating cost for heating and cooling to be under heating only costs Energy Star Rating of 98

36 Busting The Myths of LED Lighting and Geothermal Opportunities FRANKLIN ELEMENTARY SCHOOL STERLING, IL Geothermal HVAC system retrofit One Pipe Design Grades K students 36,000 sq. ft. (School was built in 1957.) 23 classrooms

37 Busting The Myths of LED Lighting and Geothermal Opportunities Washington Elementary School Belvidere, Illinois Geothermal HVAC System retrofit 105,000 sq. ft. 60+ classrooms One Pipe Design Energy recovery ventilation Digital control system VRF (Variable Refrigerant Flow) in office Renovation over 1 summer

38 Geothermal can work well in most situations. While geothermal is typically a more expensive option to install, it saves considerable $$ payback. Geo works well in new school construction or retrofits. Geothermal provides heating AND cooling.

39 Geothermal can be designed in various configurations. One size doesn t fit all. Geothermal isn t always the best option. Always partner with competent, experienced professionals. Design and sizing is KEY. By selection the low bid, you sometimes get what you pay for.

40 Incentives for geo installation MMC/IL DCEO PSEE Program- call Mike Stanch at (312) Illinois Clean Energy Community Foundation. Bob Romo is the main contact (312)

41 Busting The Myths of LED Lighting and Geothermal Opportunities John Freitag, Geothermal Alliance of IL or

42 360 Energy Group can help you access incentives and implement your projects through our partnership with Metropolitan Mayors Caucus Covers all public entities in Com Ed, Peoples Gas, North Shore Gas and Nicor Gas Delivery Service Territories Initial Consultation and Facility Audits are available for lighting, HVAC and other mechanical energy efficiency projects- at no cost to participants Assistance in applying for additional ICECF funds is provided for K-12 Schools for indoor and outdoor lighting projects IL DCEO Applications are processed by MMC and 360 Energy Group directly for participants Project management and bidding process assistance is available to participants MMC pays IL DCEO incentives directly to participants on behalf of IL DCEO For Information on the MMC Aggregation Grant Program, contact Mike Stanch at or