Dillingham Home Energy Tour

Transcription

1 Dillingham Home Energy Tour Saturday, May 4th 3:00pm-6:00pm UAF Bristol Bay Campus Learn more about wind and solar energy, wood gasification boilers and world record breaking, energy efficient construction techniques. Find out how your neighbors are trimming their energy bills by utilizing renewable energy and by becoming more energy efficient. We ll meet at the Bristol Bay Campus and carpool to the sites. For more information contact Chet at Students of the concurrent Energy Efficient Building Simulation class at UAF BBC will have the option of attending the tour.

2 UAF BRISTOL BAY CAMPUS 2013 Dillingham Home Energy Tour (10 sites) The UAF Bristol Bay Campus (UAF BBC) has recently developed several sustainable energy projects. The 4 kw PV solar system was installed in the fall of 2009 and has been helping to lower the campus usage of diesel powered electricity and is used as an educational tool for the UAF BBC Sustainable Energy Program. Students of a construction trades technology program helped build an experimental, extremely energy efficient structure largely based on the Passive House standard. The small building features 28 thick walls and is designed to be heated primarily by passive solar gain and heat produced by bodies, lights and a computer. Data is being collected to determine the building s energy performance. There is also a small wind turbine on the campus with a battery system used for educational purposes, an electric car built by students and a bicycle generator which utilizes pedal power to charge students laptops. DILLINGHAM COURTHOUSE WIND TURBINE In 2010, a Proven 15kW wind turbine was installed at the Dillingham Courthouse, a building owned by Choggiung Limited. The system, designed and installed by Renewable Energy Systems, Inc. also consists of a 49 monopole and three SMA Windy Boy 7kW inverters. This high-profile site in downtown Dillingham is a great example of renewable energy utilization by a local business. The system has been designed to produce the majority of the building s annual electrical consumption. During extremely high winds or low consumption periods, excess energy is used for heating. Data is currently being collected for educational purposes. In 2012, the turbine produced approximately 24,000 kwh which saved Choggiung over $10,000 in energy costs.

3 MARSIK/DONALDSON RESIDENCE Tom Marsik and Kristin Donaldson are currently finishing construction on a small house largely based on the Passive House standard. The home is being built using advanced cold climate construction techniques and has many energy efficient and green building features. Double-wall framing and 28 thick walls provide for remarkable R-values of 90 in the walls and 140 in the ceiling. The home lacks a conventional heating system although occasional supplemental heat will be provided by a small electric heater. The home was recently recognized as the world s tightest residential building by the World Record Academy with recent blower door test results of 0.05 ACH at 50Pa! HIMSCHOOT HOUSE

4 The Himschoot House takes full advantage of two renewable energy resources: wind and wood. The site features two homeowner installed, Southwest Wind Power Skystream 3.7 wind turbines on 45 foot towers which together have produced an average of 7 MWh per year. This wind energy system was the first grid-tied renewable energy system in Dillingham. The system features two 48 volt DC battery plants and a charge/inverter system with a circuit select box for conservation and backup power. The home is heated by a detached wood-fired boiler and uses a custom built indirect water heater. Recent energy efficient upgrades include the addition of of structural insulated panels and new windows. U.S. DEPARTMENT OF FISH AND WILDLIFE S RESIDENCE A residential solar domestic hot-water system was installed in Dillingham as a cooperative project between the U.S. Fish and Wildlife Service and the UAF Bristol Bay Campus. Three Heliodyne Gobi 410 solar thermal panels heat glycol in a closed loop system. Heat is transferred to the domestic hot water system in a 108 gallon, dual-coil Stiebel-Eltron storage tank. Heated water from the tank flows through a mixing valve and directly into a Toyotomi 148 on demand oil-fired hot water heater. In this way any rise in temperature in the water supply, the well water is about 44.5 degree F, will be translated into energy savings for the home. A heat dissipater is plumbed into the solar supply side to protect against overheat situations and designed to operate when the average tank temperature reaches 161 degrees F. A Heliodyne brand Delta Pro controller on a Helio-flo pump unit supplies system control and data logging capability. The system started regular operation on April 12, 2011, and of 18 days monitored in April, the system has produced water above 100 degrees F on 15 days. During that time frame stored water at the upper tank thermistor reached 152 degrees F and averaged 98 degrees F days. Data is being collected and analyzed partly to determine the economic feasibility of domestic solar hot water in the Bristol Bay region.

5 DREESZEN RESIDENCE Bob and Carol Dreeszen s home is located 80 air miles south of King Salmon Alaska on the Alaska Peninsula. This remote setting is 30 miles upstream from Ugashik Village, equidistant from the Pacific Ocean and Bristol Bay. They designed and installed their hybrid wind/solar/energy system which provides 99.9% of their electrical needs. The system consists of a 1.44 KW dual axis solar tracker, a 212 watt fixed solar array, three small Southwest Wind Power turbines and two 1KW models. Their battery system consists of (24) 2v Hup Solar One batteries totaling 1055 amp 48vdc. They have two Trace SW 4048 inverter/chargers for both backup and for the ability to provide both 110 and 220 power. They installed the first portions of the system in 1996 and plan the addition of another solar tracker array next summer. LISAC RESIDENCE Mark and Denise Lisac worked with a local Alaska Craftsman certified contractor to design their passive solar home in 1985 with the idea of taking full advantage of their sun drenched lot. The main floor features an 8 x16 sunroom and 150 ft 2 of south-facing windows. Although the surrounding trees have grown, the Lisacs still receive an abundance of natural light and a large reduction in their home heating needs. They are also participating in AHFC s home energy rebate program and have installed numerous efficiency upgrades such as several new, triple paned new windows, additional insulation, boiler upgrades and much more.

6 RADENBAUGH RESIDENCE This is an example of a small, home owner installed, hybrid wind and solar system. It features four 90W solar panels, an Air X wind turbine, four 12V batteries and an inverter. The 760 Watt system provides renewable power to a workshop and garage. The homeowners also participated in AHFC s home energy rebate program and there have been several energy efficient upgrades made to the home including the addition of blown-in cellulose insulation. U.S. DEPARTMENT OF FISH AND WILDLIFE S HANGAR The U.S. Fish and Wildlife Service s drain-back, solar thermal system was installed by Redoubt Plumbing of Kenai in August 2010 to assist the radiant floor heating on their 4,600 square foot hangar. The system is composed of twelve solar thermal collectors arranged in two banks of six each that can operate independently. One set of panels can be run while the other drains back if solar input is high when fluid temperatures reach a preset level. Over 240 gallons of glycol provide energy storage within the system and a gravity fed drain-back tank provides protection from stagnation in overheat conditions. Caleffi brand controller units manage circulation, drain back, and data collection. Heated, stored glycol is injected into the traditional hydronic heating system when beneficial. Performance data will be analyzed by the UAF Bristol Bay Campus and be publicly available.

7 BENNIS RESIDENCE In 2007, JD Bennis began researching various wood boilers in response to skyrocketing fuel prices. He settled on a Garn 2000 wood gasification unit. The entire system consists of an insulated 2000 gallon boiler which pumps heated water through insulated Pex pipes buried 6 feet underground into the heat exchanger of an oil boiler. The system was ownerinstalled and provides heat for two, 1,800 square foot duplexes. The boiler was installed in an insulated building which was also built by JD from local lumber milled on site and from scrounged plywood and particle board which saved approximately $6,000 in construction costs. Ray Kase Jr, provided plumbing assistance with the project. The entire system cost $30,000 not including JD s labor. He now saves an estimated $7,500 in displaced heating fuel costs by burning wood which means the energy savings have already paid for the cost of the system. There are plans to expand the Garn boiler to provide heat to a second duplex. JD is very happy with the performance of the system. He recommends taking the time to research any expensive energy systems and making your building more energy efficient first. An energy efficient building is always the first step in saving energy.