In this work the heat conduction calorimetric unity construction is described, and its performance is evaluated in the determination of the immersion enthalpies of the carbonaceous materials in liquids of different nature. The calorimetric unity is constituted by reaction cell in stainless, an aluminum block that favors the heat conduction, and sensors type thermopiles connected in series and located between the reaction cell and the metallic body, which allow the obtaining calorimetric signal. The stability in the baseline signal is+