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Please use this identifier to cite or link to this item: http://dspace.siu.ac.th/handle/1532/496

Title: Feasibility of power generation from Bangkok municipal wastes
Authors: Wibulswas, Prida
Keywords: Recycling (Waste, etc.).
Refuse and refuse disposal
Thermodynamics
Issue Date: 1992
Type: Preprint
Series/Report no.: REP152 1992;c.1
REP152 1992;c.2
Abstract: Bangkok municipal area generated about 5,500 M tons of solid wastes per day in 1991. Bangkok Metropolitan Administration is however able to collect only about 4,200 M tons/day and dumps them at three disposal sites in Nongkham, On-Nooch and Ram Indra sub districts of Bangkok. Two compost plants have been recently renovated and set up and now operate with combined capacity of 1000 tons of municipal wastes per day. Municipal wastes consist of commercial refuse, industrial wastes, institutional -wastes, residential wastes and market wastes. On the average, municipal wastes comprise 85.3% combustible, 8.6% non-combustible and 6.1% miscellaneous components. The combustible components, on the average consist of 58.5% moisture, 13.3070 ash and 28.2% combustible content and the net heating value is about 16.1 MJ/kg, dry basis. As about 1000 tons of the- Bangkok municipal wastes are consumed in the compost plants, more than 4000 tons of the wastes are available as fuel for electricity generations. It is assumed that four power stations would be set up, each with a capacity of 1000 tons of the municipal wastes per day. The feed rate of the municipal wastes to each of the proposed plant is 14.7 tons/per hour of combustible contents, dry basis. With a superheated boiler rated at 80 bar, 450 C, each proposed power plant should be able to generate about 8.33 MWe. The combined generating capacity of the four power plants is therefore 33.3 MWe. The financial analysis including the cost of the wastes processing shows that the proposed power stations would be able to generate electricity at 0.83 B/kWh and have a pay-back period of 4-5 years and IRR of 24.9%. However, if the total cost of the fuel is excluded, the cost of electricity would decrease to 0.70 B/kWh. The pay-back period would also decrease to 3-4 years and IRR would increase to 28.2%. On the otherhand, if the total cost of the fuel is taken into account, the proposed power station would not be financially feasible.
Description: Research and development journal of the engineering institute of Thailand. 3, 1 (1992) : p. 59-63
URI: http://dspace.siu.ac.th/handle/1532/496
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