was determined by weighing the material in a top open rectangular
wooden box of 0.125 m3 volume. Average value of four measurements
was taken as a bulk density. True density of the briquettes
was determined by taking average of actual measurements of the
randomly selected samples of briquettes. Calorific values of four
different types of briquettes were measured using a Bomb Calorimeter
(Scientronics Instruments, New Delhi, India).