An investigation of the effects of moderator variables on the lower heating value estimation of lignite deposits in Turkey

, it is investigated whether moderator variables are effective on LhV estimation with proximate analysis data collected from forty-one lignite basins in different regions of Turkey, and a moderator variable analysis (MVA) model is developed to be used for the prediction of LhV. As a result of the study, it is found that the proposed MVA model is in accordance with observation values (coefficient of determination R 2 = 0.951), and absolute and standard errors are also small. Therefore, it is concluded that the use of MVA to estimate the LhV of Turkey’s lignite is found to be more statistically meaningful.