Furnaces for gas and liquid fuels

The major results from the oil burning tests were  

The main results of the gas burning tests were incomplete combustion was observed for a 1.03, and the corresponding heat losses were 0.126%. 

The results described above indicate that impinging streams enable oils or gases to burn highly efficiently, with negligible heat loss at low air excess factor, uniform heating of surfaces, and negligible corrosion of the heated surfaces by the products burned. 

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