Solar Hot Water Talk

On Thursday, October 14, from 7:00 pm to 8:30 pm, we will host a workshop by Philip Shelton titled "Designing and Building a Photovoltaic Powered Solar Hot Water System with Internet Enabled Energy Monitoring." Please join us at the store for this free talk.

Solar hot water systems are a common upgrade to many high performance homes in Maine. While free solar energy heats the water in these systems, many of them rely on house electric power for the pumps that circulate fluid between the solar collector outside and the hot water tank inside.

"Why add to your electric bill when you can power your solar hot water pumps from the sun too?" asks Phil. "After being told by a 'professional' that it could not be done, I set out to design and build a system that was truly Zero Net Energy."

Phil's free workshop will cover solar hot water system design, basic plumbing techniques and low cost system monitoring devices. He will show how you can use a solar photovoltaic-powered pump on an evacuated tube solar hot water system. Harnessing solar energy for your pumps provide two advantages. First, your solar hot water system is more reliable; it continues working even during power outages. Second, your pump speed matches the available solar energy: when more heat is available, your pumps circulate faster.

During the workshop, find out how to design and install a monitoring system that provides a more accurate measure of the hot water actually being delivered for use. You will learn how to use inexpensive monitoring hardware to determine how much energy -- and money -- your solar hot water system is actually saving.

"All the energy for my entire system, including radiant heat for our greenhouse, comes from the sun," says Phil. "The performance of our system is posted live on the Internet at www.sunnyhotwater.com."

Phil is perhaps best known for designing and building the world's largest rotating globe for DeLorme Mapping in Yarmouth, Maine. Computer controlled, 42' in diameter and built with 3 miles of aluminum tubing, it made it into the Guinness Book of World Records in 1999.

Phil honed his skills as a wooden boat builder on Long Island, New York, before heading to the wilds of Washington County, Maine. He bought 30 acres of woodland, three miles from electricity, and built a log cabin from the trees on the land. After living for five years without electricity or running water (unless you count "running water" up from the stream with galvanized buckets) and with a second son on the way, Phil decided to move towards civilization. He landed a job at the Maine Maritime Museum in Bath, Maine, and taught boat building for ten years.

His lifelong goal, as a boat builder, was to design and build his own boat and sail around the world. After ten years of off and on construction, the 42-foot gaff rigged cutter "Iwalani," equipped with a modified wind generator, was finally launched. Phil and his wife Amy left Maine in 2000 and successfully returned three years and 30,000 miles later. At Williams Farm, in Georgetown, Maine, they continue to pursue a self-sustaining lifestyle.

This talk is part of the F.W. Horch series on sustainable living. Each monthly talk is held on the second Thursday of the month at the F.W. Horch Sustainable Goods & Supplies store, 56 Maine Street, Brunswick. Space is limited, so if you're interested in attending we encourage you to call the store at 729-4050 to reserve a seat.