Calculation of Available-Energy Quantities

Estimation of Energy (Enthalpy) and Exergy (Availability) Contents in Structurally Complicated Materials

“…For substances that contain mainly C, H, 0, and N, the values ofH.H.V. are essentially identical to those of [30 (see e.g., Szargut and Petela, 1965;Rodriguez, 1980;Fan and Shieh, 1980). For a structurally complicated substance, such as coal, charcoal, coke, liquid fuel, biomass, oil shale, or waste material, its higher heating value (H~H.…”

“…Several investigators (see, e.g., Szargut and Styrylska, 1964;Szargut and Petela, 1965;Rodriguez, 1980) have found that the ratio of the specific exergy (availability) to the specific enthalpy relative to the dead state, e •, in general, or…”

Effect of the use of olive–pomace oil biodiesel/diesel fuel blends in a compression ignition engine: Preliminary exergy analysis

“…For this propose, High Heating Value (HHV) of each fuel was calculated in an IKA C 200 calorimeter and was used to calculate LHV, taking into account the vaporization heat of the water that appears during the combustion reaction. The fuel chemical exergy is calculated following the expression developed by Szargurt and Styrylska, mentioned in Rodríguez [31] for liquid fuels, where H, C, O and S correspond to the mass fraction of each element, as follows in expression (4). The mass fraction of H, C, O and S was determined considering the fatty acid composition of olive-pomace oil methyl ester (Table 2) and assuming a conversion (FAME) value of 100%.…”

Exergy analysis in a low heat rejection IDI diesel engine by three dimensional modeling

“…Exergy of liquid fuels C y H z , which are used in compression ignition engines is approximated as follow : …”