Q. I read somewhere this will power my whole house!? 500 Watts won't even run my toaster!
A. The enthusiasm of the press has made it a little difficult to discern, but we're not complaining. This system (and most like it) have a output ratio of around 9 to 1 / Hot water to Electricity. So for every BTU burned or Kw produced in heat, 10 to 12 % of that is converted to Electricity. However, if you're sleeping, and storing that power in batteries, it adds up to quite a bit of juice; and that will power your toaster. Not only that, but it keeps your lights on, or a whole host of other applications, while your structure remains well-heated.
Water is the "battery" for heat - which you can store for later, or use - it's up to you.
Q. I thought you said this was a generator, not a boiler?
A. Technically it is a boiler and generator, but it is engineered to never boil. The plumbing design is un-pressurized and open. Even in a catastrophic pump failure, circuit board failure or any other electrical/water-flow failure (other than being fired dry) the system will Thermo-syphon (pull fresh water in as it heats the water already in the core). The cold water source is plumbed *above* the heat exchange and TEG core. If hot water gets produced under a no-pump, no-flow condition, the hot water is forced up into the holding tank as it expands, drawing fresh cold water down and in behind it.
Q. What about Safety?
A. Safety is our primary concern. Read the section above on how our design is "open" to the normal atmosphere and un-pressurized, and how even in a pump failure the system still moves water and never goes to boil.
Q. Why is the InStove (a cook stove) being used for a Thermoelectric Generator?
A. The InStove is non-radiant, and holds all the heat it produces in the core. Most stoves are designed to radiate, which makes large-array TEG application troublesome.
Q. How much Hot Water does the system produce?
A. Depending on size, and fuel between 25,000 and 150,000 Btu/hr
Q. What about Fuel Feeding? How often do I have to tend the system?
A. The core system is finally available for order because of the arrival of the long-burn "downtube" fuel attachment. This add-on inserts directly into the front fuel/air slot on the InStove and bolts to the top-mid radial bolts on the InStove chassis. The add-on will facilitate both local fuel (up to 4"diameter 24" long wood) with run-times around 4 hours with automated Pellet-Feed that takes over when you're away or sleeping which will run for days.
Q. Why are you promoting burning wood? That's not good for the environment!
A. While debate continues to this day, we feel that it is rather simple;
All prices are in USD.