Solar Water Heating is the first book I’ve seen that focuses solely on solar water heating. It’s a technique that’s been practiced since ancient times, but until now there’s been strangely few resources on the topic for a North American audience. The author, Bob Ramlow, examines state-of-the-art solar heating systems. He covers not only solar […]
A Canadian company, Pulsar Advanced Technologies, claims to have produced a water heater that uses microwave technology to heat water instantaneously. The company says: “The Vulcanus MK4 can heat water from 35 degrees Fahrenheit to 140 degrees Fahrenheit in seconds and can source multiple applications at once: showers, dishwasher, sink usages and more. The Vulcanus […]
Takagi water heaters do not have tanks, instead they heat water instanteously using a gas burner. They are efficient and powerful — even the smallest heater, the Takagi T-KJr., can produces 180 gallons of hot water in an hour, but weighs only 30 pounds and is 20 inches high. They run on propane or natural […]
Solar water heating works efficiently even in cloudy areas. Home Power Magazine recently ran an article that gives a simple overview of solar water heating systems (well, relatively simple). In the article, they examine various popular systems that have proven themselves reliable.
Apricus makes a unique solar hot water heater which is 30-40% more efficient than flat plate solar systems. The secret to the performance is the use of cylindrical evacuated glass tubes to absorb the heat from the sun. Because the tubes are cylindrical, there is always a surface area that is perpendicular to the sun. […]