I have a inverted flame wood furnace made by HS Tarm but I live out in a very rural part of France, and lots of houses locally use wood as their primary heat source also. So I have built something that looks similar to the thing in this article, but also measure the different water temperatures (of course in a setup like this the radiators in the house are heated by water). I also have a 1-wire network setup so that I can monitor the exhaust gas temperature to see if it gets too hot. Only when all the water in the furnace is at a higher temperature, cold water will be brought in from the ackumulator tanks, and is then mixed with already pre-heated water, all this for a more efficient heat transfer, so that you don’t keep bringing in cold water at the start which would cool down the fire. In my furnace setup when the exhaust gas starts to get warm, it will turn on a pump that circulates the water from the bottom of the furnace to the top. Also a common setup is to have ackumulator tanks where the heated water from the boiler is stored. But not because of the sot issue (we have chimney sweepers for that), but rather for efficiency reasons it is important to not loose to much of the energy into the chimney. And it is quite common to measure the temperature of the exhaust gases like this. Posted in Misc Hacks, Wireless Hacks Tagged creosote, creosote buildup, EGT, k-type thermocouple, nRF24L01+, PIC16F690, thermocouple, wood stove Post navigationįirst of all, that “black on blue” is a crime against humanity (on the display) and should be fixed ASAP.īesides that, I live in Sweden where wood fired furnaces are quite common, not just for “extra heat” but rather “all heat”. Interested in using a wood stove to help heat your house? Why not build your own? When it’s all said and done, this monitor will be part of a bigger project to monitor power all over the house. This is shielded so that radiant heat from the stove doesn’t compromise the readings. An nRF24L01+ in the basement monitoring station communicates with another module sitting in the living room display so can easily find out what’s going on downstairs. The intel is fed to a thermocouple amplifier to provide a cold-compensation reference. Also, the thermocouple was mounted on the surface and made poor contact with the chimney. Wood Stove Monitor 2.0 uses a probe thermometer on an Exhaust Gas Temperature (EGT) thermocouple to measure the temperatures. The first version he built involved an annoying 20 foot run between the basement and living room. To that end, he built a wireless wood stove monitor. knows that by carefully monitoring the temperature of the gases in the chimney, he can hit the sweet spot where his fire burns hot enough to keep the creosote under control and cool enough that it doesn’t burn down the house. While this is a nice secondary heat source, he has creosote buildup in the chimney to worry about.
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