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With winter local heating degree days at approximately 6,500, the auxiliary heat performance level was calculated at 14,404 BTUs per year, per square foot. (We found Passive Solar Design Strategies, listed in Access, very useful for making these calculations.) The actual maximum temperature swing is 8.8 F (4.9 C). On the practical side, it only took half a cord of construction scraps to keep the house a comfortable 70 F (21 C) all winter. The coldest the house ever became during an extended...

Info

*19 compact fluorescents total, 21 watt average. I operate two lights at any given time (6 hours in the winter 3 hours in the summer). *19 compact fluorescents total, 21 watt average. I operate two lights at any given time (6 hours in the winter 3 hours in the summer). The Trace SW4024, RV Power Products SB50, and Trace DC250. The Trace SW4024, RV Power Products SB50, and Trace DC250. My ground-mounted racks are homemade, using 4 inch (10 cm) steel purlins, typically used in the construction of...

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Not recommended for domestic hot water Flat plate collectors are most commonly used for low-temperature applications (up to 140 F 60 C), such as residential domestic water heating and pool heating. Water passes through parallel copper tubes bonded to a flat copper sheet under glass, all enclosed in a weathertight insulated frame. For higher temperature applications (over 140 F), evacuated tube collectors are more efficient. The design of evacuated tube collectors reduces heat loss caused by...

Closed Loop Free Surface Water Tunnel

Four process color (CMYK) in any sized advertisement is a flat rate of 185 per insertion. For inserts, and current subscriber circulation demographics, please call us. Home Power is published bi-monthly. The ad deadline for the Dec 01 Jan 02 issue (HP86) is 5 October 2001. Call 541-512-0201 for further details. International Home Power Subscriptions Due to the high cost of international mailing, we charge more for Home Power international subscriptions. 1 Year (6 issues) International Rates...

CBWIBTOnE Igctrolyacr

Or the past several years, fuel cells and hydrogen have been very hot topics in the news. Unfortunately, unless you are a well-funded university or a large corporation, purchasing a fuel cell or hydrogen electrolyzer has been next to impossible. I've studied and researched fuel cells and hydrogen for several years, and I find them fascinating and technically challenging. It was always frustrating to learn only from books, without any hands on experience with real equipment. This lead me to...

California

Oct. 20, '01 Solar Cooking Summit, Agua Caliente Park, San Diego County, CA. Boiling Water Recipe Contest, share info & technical innovations, solar oven building classes. For event questions or rule list, contact Ian Zalewski, boilingwatercontest spreemail.com Nov. 1-2, '01 International Symposium on Distributed Energy Resources San Diego, CA. Betsie Brown, 858-794-7355 betsie brownbostwick.com Nov. 10, '01 Pomona, CA. 2001 Southern California RE Expo, Pomona Fairplex. Exhibits, workshops,...

Wind Turbine Generator Features

Lowest noise emission high performance home power wind turbine available. When it comes to quiet smooth running turbine operations in residential communities, AEROMAG Stealth -Acoustic is the right choice for good neighbors Number one for safety and structural integrity, AEROMAG Stealth Acoustics is the world leader in low rotational inertia high tip speed ratio home power safe, blade technology. Anodized Aluminum body with all stainless steel hardware Rare Earth Neodymium Iron Boron Permanent...

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Membrane and nickel electrode screens for the PEM electrolyzer. Careful assembly of a cell stack is critical to good operation. With concerns for gas flows, conductivity, and proper contact pressures, assembly becomes very labor intensive. Even with the best commercial designs, the labor cost component is high. Proper design and automation can address most of this at the commercial level. We did many calculations of performance based on variables such as gas flow, temperature, and pressures. It...

Solar Lighting Experts

Landscape, Security, Bus Stops Street Lights, Signs, Monuments SOLAR WATER PUMPING EXPERTS Submersible Pumping Systems 800-677-6527 www.sunamp.com email sunamp sunamp.com Wholesale Distributor Authorized Trace Service Center Dealers Wanted Southwest US and West Coast Serving the Southern United States amp Carribean

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Don Loweburg 2001 Don Loweburg With the combination of an increased rebate up to US 4.50 per watt and continued utility uncertainties, the California rebate program enrollment has increased dramatically. From December 1998 to December 2000 24 months , the number of applications per month averaged fewer than 50. In January, reservations exceeded 150, and have gone up steadily. For June, the number of reservations may exceed 400. When all current reservations are installed, the total PV capacity...

Un

Low cost, All-in-one design Works with any type of PV technology 1.0,1.5,2.0 amp 2.5 kVA capacity To receive information on our complete line of quality RE products and the HuP Solar-One Battery call 800-718-8816 or 208-267-6409 9 am-4 pm pst 6778 El Paso St. Bonners Ferry, ID. 83805 www.nwes.combatteries nwes.com HuP Solar-One still has the best warranty in the business HuP Solar-One positive plates are wrapped in an envelope HuP Solar-One uses a patented recipe to achieve extra life at deeper...

Wisconsin

MREA Workshops Oct. 6 Basic Photovoltaics Custer, WI. Oct. 7, Intermediate PV, Custer, WI. Oct. 20 Home Weatherization Techniques Custer, WI. Nov. 10, Masonry Heaters Intro, Custer, WI. Nov. 26-30, RE for the Developing World, Custer, WI. Call for cost, instructors, amp more info. Significant others half price. MREA, 7558 Deer Rd., Custer, WI 54423 715-592-6595 Fax 715-592-6596 mreainfo wi-net.com www.the-mrea.org Solarex US 64 299 Uni-Solar SX 55 259 Solarex SX 80 369 Excel NE toilet 799...

Water-powered Pv Tracker Bill Spurlock

Sprinkler Timer Mount Install

A bottom, west side view of the mount in the midday position. The third spring is now under tension, and will prevent over-rotation in the afternoon. The bucket rope is visible here, passing through a pulley in the center of the crosspiece, and then down to the bucket, which hangs in the center of the tower. Between the top pulley and the bucket, the rope passes through a couple of brackets with slick plastic guide holes to prevent the bucket from swaying in wind. The bucket, a 5 gallon 19 l...

100 A Shunt Diy Or Homemade

Closed Loop Hall Effect Current Sensors

H mazing and fun These are words I use to describe Hall-effect sensors. You probably already own several of them. Automobiles use them to detect speed and relative location of rotating parts. Hall-effect sensors are also finding their way into consumer electronics. In fact, almost any application that requires a long-lived switch can use them. This article presents a circuit that uses a Hall-effect sensor to measure DC currents up to 200 amps. A Hall-effect sensor is a magnetic field detector....

Closed Loop Antifreeze System Components

How Open Close Hot Water From Solar

If you want a solar hot water system for your home and you live where it freezes, this article is for you. If you're installing your own system, it will help you get the right parts for a system that works. If you're planning to hire a professional, it will help you know what you're getting. Solar Hot Water A Primer HP84 covered the fundamentals of solar hot water heating systems, including collectors, different types of systems, and rules of thumb for sizing. In this article, I focus on one...

Water Powered PV Tracker

The author's water-powered PV tracker. J J hotovoltaic panels produce the most energy when oriented L perpendicular to the sun. So a panel mount that follows the sun's arc can increase daily output by up to 50 percent in summer, and up to 20 percent in winter, when the sun moves through a smaller arc. Of course, the degree of benefit depends on how much unobstructed sun exposure a site has throughout the day. Seven or eight hours is enough to make tracking pay off. I am fortunate to have more...

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11.2 mph 5 m s Average Wind Speed at Hub Height, Rayliegh Distribution. Based on manufacturer's published power curves. 2001 Priestley Ave. Norman, OK 73069 T 405-364-4212 F 405-364-2078 sales bergey.com www.bergey.com GUERRILLA SOLAR The unauthorized placement of renewable energy DATE August, 2001 LOCATION Classified INSTALLER NAME Classified OWNER NAME Classified INTERTIED UTILITY Classified SYSTEM SIZE 600 watts of PV, 400 watts of wind TIME IN SERVICE 6 months PERCENT ANNUAL LOAD 10 to 15...

New Frontier

PHOTOVOLTAICS WIND POWER MICRO HYDRO PASSIVE SOLAR HOT WATER REFRIGERATORS COMPOSTING PRIVIES ELECTRIC VEHICLES TITLE 24 CALCS. POWER SUPPLIES SATELLITE PHONES SATELLITE INTERNET SATELLITE T.V. SATELLITE MUSIC RADIO PHONES 18 years experience in design, sales, installation, repair, and maintenance. Todd G. King, M.A., Proprietor 106 East St., Alturas, CA 96101 530 233-5219 newfrontier starband.net Take control of your own life. Thousands of people have gone BackHome to enjoy less complicated,...