Determination of the heating values of liquids in a vertical calorimeter

Principle

In general, the combustion of liquids in calorimeters is particularly problematic, because the conditions required for perfect, complete and safe combustion processes are different for practically every liquid. The vertical calorimeter setup used here avoids these difficulties in a simple manner. For burning liquids, a small, easy-to-handle spirit burner with an adjustable wick is used, which makes it possible to burn a variety of liquids (such as alcohols, heating oils, diesel fuel, paraffin, etc). Only highly viscous fluids cannot be burned in this way.
The gases formed during combustion are drawn into the calorimeter insert by means of a water jet pump. In this way, nearly all of the heat energy released during the experiment is delivered to the calorimeter, thereby making it possible to determine the heating capacity of the fluid burned. 

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