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" BIOMASS AS a fuel for BOILERs - Crown Capital Eco Management Indonesia November 28, 2012 - 12:21 AM There are five basic categories of material of biomass such as: *Virgin wood- from forestry, arboriculture activities or from wood processing. *Energy crops- high yield crops grown specifically for energy applications *Agricultural residues- residues from agriculture harvesting or processing * Food waste- from food and drink manufacture, preparation and processing, and post-consumer waste *Industrial waste and co-products- from manufacturing and industrial processes. The question is how are we going to use this biomass as a fuel for boilers? But what is a boiler in the first place? A boiler is defined as "a closed vessel in which water or other liquid is heated, steam or vapor is generated, steam is superheated, or any combination thereof, under pressure or vacuum, for use external to itself, by the direct application of energy from the combustion of fuels, from electricity or nuclear energy." Let us then go back to the previous question, how are we going to use this biomass as fuel for boilers. Nowadays, the prime sources of energy in the world are oil, coaland natural gas. But these natural sources of energy has their end too, unfortunately it is already anticipated that within the next 40-50 years these sources of energy will deplete. Worst is, it is also expected that from these sources lies consequences due to their emissions such as global warming, acid rain, urban smog. Due to this fact the world is trying to utilize new sources of energy, there are some renewable energy sources that can replace harmful energy sources. The solar, wind, biomass etc are energy sources which are less harmful to the environment but can only be use in a suitable way. Biomass is one of the earliest ever discovered sources of energy but only comes with specific properties. It was then discovered that utilizing biomass in boilers offers many economical, social and env