Abstract:
In Sudan, demand for electric power continues to increase rapidly due to
the increase of the population growth, economic, industrial development, and
progressive replacement of exchange technology with clean forms of energy
generation. Atmospheric circulating fluidized bed (CFB) technology has emerged
as an environmentally suitable technology for burning an extensive range of solid
fuels to produce steam and electricity power. Since 20 years CFB is considered to
be a wide technology with more than 400 CFB boilers in operation worldwide,
ranging from 5 MW to 250 MW. The National Electricity Corporation of Sudan
(NEC) has selected a technology that will operate an extensive range of low-cost
solid fuels, decrease emissions, decrease life cycle costs, and provide consistent
steam generation for electric power generation. Therefore, CFB is often the
preferred technology.
In this thesis was study the performance of CFB boiler in Garri 4 power
plant and calculated of efficiency using the indirect method, through the difference
between the percentage of input energy and percentage of heat losses. In addition
has been defined and described units in the boiler. Also explain the methods of
measurement and test preparation. Finally efficiency of CFB boiler was calculated
according to the American Society of Mechanical Engineers and the result of
efficiency was 91.45%. According to the guarantee value of boiler efficiency in
Garri 4 power plant is 90.06% that means that the result is reasonable.
