Solar Project Description for Howard's Grove Elementary School, Howard's Grove, Wisconsin

摘要

The solar energy system utilizes 2,277 square feet of Sun Stone, nonselective, flat plate collectors to supply a portion of the space heating requirements for the 12,490 square foot addition to the existing 30,000 square foot Northview school building in Howard's Grove, Wisconsin. The collectors face due south and are mounted at a tilt angle of 50 exp 0 from horizontal. The collectors use air as the heat transfer medium. Solar energy is transferred to a rock storage bin located below the equipment room. The bin contains 1,500 cubic feet of washed river rock and is insulated with 3 inches of fiberglass on the sides, 1 inch of styrofoam on the bottom, and 2 inches of urethane board on the top. Space heating is provided by circulating return air from the heated space through the solar storage bin to be heated and distributed to the classrooms. The auxiliary heating system consists of a 520,000 Btu/hr oil-fired boiler which provides hot water to the heat coil in the hot deck. (ERA citation 05:006769)