Evolution of Bill Rowling's solar room air heater.
Experiment # 21 room heater. The basic heater is made from an upside-down passive solar batch water heater into a fan forced hot air room heater. It generates 1.5 kW of heat all day using 65 watts for the fan which can be solar powered too.
These two ceiling vents and the thermostat on the wall to the right are all you see inside the house.
Evolution of Bill Rowling's solar room air heater.
Pulls 500 cubic feet per minute of air out of a room, warns it at least 50 degrees ore and quietly returns it to the room.
For example if the rooms air temperature is 60 degrees the heated air will be at least 110 degrees.
The suns heat is absorbed by 25 vacuum tubes and the heat is transferred to the room by our patent pending heat exchanger.
Heats a 20x20 room to over 70 degrees every day all winter long.
There is also electric heat in this home but it is not used during any bright day even a cloudy one. The clouds act as reflectors.
The round tubes are running north, south so the get full sun from the crack of sunrise till the last ray of sunset.
When not needed the thermostat turns the fan off and the heat just safely stays up in the vacuum tubes.
Mount the collector, duct it into the room, mount the thermostat and your done.
From the grid using 120 volt AC, 220 volt AC or solar operated 12 volt DC.
Questions Email Bill or call Bill's cell right now 253-677-0205
If you want me to build you a 25 tube system I have to charge $3999 plus freight. (Freight approx. $200)
DIY Free Plans Purchase the basic tank and tubes $600 plus freight and you can make one of your own like the one shown here or the new 7 inch by 7 inch manifold design $800 plus freight, a couple of Home Depot duct fans, some duct and tubing and you're on your way.
Solar Building Heating Systems
Completely solar operated heater pulls air out of the room and returns it at least 50 degrees warmer on a sunny day and 20 degrees on a cloudy day.
Still works great on freezing cold, windy, rainy days.
25 tube system generates 1.5 kWs of clean, free heat all day long.
Evolution of Bill Rowling's solar room air heater.
Experiment #13 proved the idea worked but we had a long ways to go.
Evolution of Bill Rowling's solar room air heater.
Experiment #18 located on the west side proved to everyone that solar thermal technology works very well in the cloudy Puget Sound area. This unit started out as a solar thermal passive solar water batch heater. It started generating .75 kW of heat all day long and we new we were on to something big.
My latest design has a paintable 7 inch by 7 inch manifold along the bottom and a nice thin stainless steel A-frame for less shading.
A 65 watt fan blowing through these 25 tubes mines 8-12 kWh per day of clean, green heat.
Experiment 26 with 7 inch by 7 inch manifold and a 3 inch internal duct.
