Meeting begins at 7:20 pm.
Jon Carter thanked Sherry for minutes of July meeting, minutes were accepted.
Charlie Case updates:
Municipal bldg – Clay Mitchell will discuss data and inefficiency of the town office. The committee is looking at all options.
Gillian Carter has just installed a geothermal system, she’ll discuss this. Someone in the seacoast area has installed a wind turbine for residential use w/18 yr payback, according to a recent newspaper article.
Wind turbine – new target date for installation is Oct 1. Company will give us a custom interface on the data interface in exchange for the delays (an $800 value).
Challenges of committee is to be part of Frisbee School closure, to help School Dept do the conversion in a way that is as energy efficient as possible.
Schools will save $37K/yr with converstion of lighting, moving ahead to complete this by Sept. Schools are also looking at conversion to natural gas or propane.
Reported on a visit Appledore Island today, saw the 7 kW wind turbine, they have lots solar feeding into a battery array, are now able to use a smaller generator because of the amount of solar they are generating. You can see more about the systems out at Appledore at . An interesting fact is that bird guano does not negatively affect performance of solar panels. Also, according to a recent study, no birds have been killed by the wind turbine.
JC introduced Clay Mitchell, planner for Epping NH and consultant to Kittery on use of cogeneration at Kittery Municipal Building. Maury Heppner, a Kittery resident, is an energy modeler and analyst, has volunteered to work w/Charlie Case, Jon and Clay Mitchell, to understand performance and alternatives for the building.
Discussed the analysis of the Muncipal Bldg’s heat load, which varies seasonally and daily. Right now the building has an 800 mBTU boiler, which is highly inefficient most of the year when heat demand is low. Then discussed what the best first step is based on cost savings and greenhouse gas reductions. Does it make sense to use the Ecopower congen system? He thinks it does. The current monster boiler is the most efficient on the coldest day in winter but in the summer and shoulder months it’s very inefficient – it kicks on full power to provide a small amount of hot water or heat. Ecopower produces less heat if less heat is needed. The system Clay is proposing combines a 150 mBTU Ecopower system with the current monster boiler, which will kick on only when heat demand
is greatest. The base load of heat can be provided by Ecopower as well as approximately 10% of the building’s peak electricity.
Payback of this proposal to combine Ecopower cogen w/current monster boiler, at least until the building is tightened to the maximum extent, is 2.1 years. Cost is $73,000.
In the future, other innovations might include using solar thermal to run the Ecopower, replacing the monster boiler with two smaller, more efficient boilers, conversion to natural gas or propane, etc.
Jon Carter sees the work in the building in three phases:
Phase 1. The installation of the barrier between the floors is helping to keep heat where it’s needed,
Phase 2. This kind of combination of cogeneration discussed here.
Phase 3. Working with Siemens (building maintenance company) to establish better system controls, getting a better handle on automation controls to make heat and HVAC units work more effectively. Also installing sensors, changing lights, other conservation and behavioral measures.
With KEAC approval the proposal can go forward to Town Council at Sept 8 meeting.
Questions arose as to how this proposal compares to other alternatives such as geothermal. There is already money in an energy efficiency fund so this does not need to go to town referendum.
There is consensus to recommend this combined system to Council. Thanks were extended to Clay and – for their hard work. Cam will work with Clay to put out a brochure that explains the modeling and
JC – Other proposals:
Currently accepting bids on dual system burners for schools and town office so natural gas/propane can be used.
Looking at a 4/10 work week at this building and at Rec department so buildings could be shut down entirely on Fridays. Would need to assess cost savings and get union approval. Benefits to the public are that on four days buildings are open later. Employees would save on travel, there would be some energy savings.
Fuel More Program – a safety net for Kittery families. This year’s goal is $50,000 to help 75 families. How could KEAC help? Create awareness, get out a call for help. Discussion about having families who need fuel assistance first have a home energy audit, then have a fund available to help with fixing “low hanging fruit”. KEAC is strapped with projects but feels the importance of helping families who are struggling and will continue to do so as energy costs rise. Could consider getting blower door test equipment to help determine where heat losses are greatest.
Meeting adjourned 9:05 pm.