Development of Viscosity based correlation for Estimation of Higher Heating Value (HHV) of Diesel Fuel

Estimation of higher heating value (HHV) is one of the basic step in performance modeling and calculations of thermal systems. The HHV of liquid fuels is determined experimentally, which is time consuming and expensive. From literature survey it is observed that the HHV of most of the liquid fuel is a function of viscosity. In this paper an equation is developed for samples of diesel fuel. The HHV calculated with equation for samples using viscosity shows negligible percentage difference for diesel fuel. For unknown diesel samples the equation shows satisfactory agreement with the experimental results. This equation can be used to predict HHV of unknown diesel fuel by knowing its viscosity.