Peltier DIY wood stove fan made in slovenia

I build my fan for Demonstration how its work.Fan is not fully build for final use but show how they live alive. Mesurant Voltage( 0.7V ) Ampers (20mA or 0.02A) heat value furnace 130C heat sink- heat site 90C ,cold site 50 and 40C.Moisture Meter_MD 2G Wood value of humanity dry woods for fireplace ,Magnetic Thermometer value 250C on the chimney.Wood i use beech trie.Stove Prity K1,IR thermometer DT-300