Its calorific value is around 4720 kcal/kg. Briquettes provide higher calorific value per dollar than coal when used for firing industrial boilers. Kosovo's lignite varies in net calorific value from 6.28-9.21 MJ/kg, averaging 7.8 MJ/kg. It also produced some housecoal-quality coal&colon; larger-sized coals of higher calorific value. During the war, average calorific intake decreased only three percent, but protein intake six percent. It is of low calorific value and high ash content. It was used to enrich low calorific value manufactured gas. This is known by several names as the calorific value, heating value, or therm value. Pure highly calorific synthesis gas consists predominantly of carbon monoxide (CO) and hydrogen (H). The calorific value of biodiesel is about 37.27 MJ/kg. It has a higher calorific value and burns with a luminous flame. Which could be due to the higher calorific value of the sea urchins . The light materials have higher calorific value and they create the final RDF. BWG has a calorific value of . The calorific (heat) values of the two are almost equal.