Thermoelectric fan
#1
01-26-15, 01:24 PM
Thermoelectric fan
I have two questions. I'm trying to build a peltier driven fan for my coal stove. 1-What is the heat differential needed to generate enough current to run the fan? 2-I'm trying to run a 12V 1.5A DC motor, how do I figure out which peltier I need? Thank you for your anticipated response.
#2
01-26-15, 02:04 PM
Group Moderator
Calculating performance for cold generation is tough but it's even tougher to calculate for power generation from heat. Special modules are required that can withstand the high heat. The link below is an excellent piece of information on power generation.
tetech.com/wp-content/uploads/2013/11/ICT97RJB.pdf
The parent site is here...... tetech.com/peltier-thermoelectric-modules
tetech.com/wp-content/uploads/2013/11/ICT97RJB.pdf
The parent site is here...... tetech.com/peltier-thermoelectric-modules
#3
01-26-15, 05:12 PM
PJmax, Thank you very much. This is really great information. Way more than I was able to find after looking for quite some time. I will let you know how this goes in the next days, or weeks, however long it takes. Thanks again, Jon
#4
01-26-15, 08:58 PM
Group Moderator
#5
02-03-15, 06:09 AM
Thermoelectric fan, for wood or coal stove.
I've gotten some very technical information from this forum, about peltiers and how they work. I'm still having trouble getting my fan to work. Is there anyone that has a parts list/schematic, of how to put one of these together. Also, what is the temperature differential required to generate enough power to run one of these things. Thanks
#8
02-03-15, 09:19 AM
Group Moderator
You may have to fan cool the side facing away from the stove. There needs to be a difference in temperature from one side to the other.
#9
02-03-15, 01:47 PM
No there is no model #. Ecofan makes these units, but they are expensive. I'm trying to use a CPU heat sink, a motor with fan blades on it, a peltier, and a heat transfer unit. I can get the thing to turn, but then it slows down and stops. I have matched the peltier power output to the motor. But I'm still having trouble. If you go on Youtube, and type in Thermoelectric fan. You will find many examples of this, but no one will give you specifics.
