Energy balance analysis on increasing the capacity of a sugar factory in Indonesia

Sugar is one of the important commodities for Indonesia, whose consumption is increasing along with the increasing population. On the other hand, domestic sugar production stagnated and forced an increase in sugar imports. To overcome this, the government is revitalizing sugar factories to increase national sugar production capacity. The Rendeng Sugar Factory, in Kudus, Central Java, Indonesia, is one of the sugar factories whose capacity has been increased from 2800 TCD to 4000 TCD. This capacity increase, of course, has consequences for an increase in energy consumption for the production process. As a self-sufficient energy system with a source of biomass fuel from bagasse, an energy balance analysis is needed to ensure that the production process can run well. After this capacity increase, the sugar factory will produce 51.27 tons of bagasse/hour used as boiler fuel. There are two boilers, each of which produces superheated steam of 40 tons/hour for Boiler-I and boiler 50 tons/hour for Boiler-II. The superheated steam then flows to several turbines as a power plant and prime mover. The residual steam from the turbine is then used as a heat source in the process, with a requirement of 81.8 tons/hour. With this analysis, energy self-sufficiency with bagasse as fuel can still be fulfilled, and there are even energy reserves.