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...ynamics is simply based on the principle of energy conservation, whichsin turn provides the foundations for ‗energy analysis‘. It may be represented for a steady-state processsby the balance Equation =-=[21]-=-:s 0WQmpekehmpekeh outoutinins(1)swhere min and mout denote the mass flow across the system inlet and outlet respectively, Q representssthe heat transfer across the system boundar...

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...52.8986 − 5.306 + 94.1283 + 361.3183 ∆> = 0.397 EF!" Steam enters in the turbine with a pressure of 8500kPa and 500C o with a flow rate of 70kg/sec. so energy balance can be written as. 703391.6 − 203.4 + @VN`−606.089 = 0 (9) @VN` = 368.2189bcDdd!" Now ideal work of the whole steam power plant can be calculated as. C?l = @VN`∆ |− UV∆> (10) C?l = 368.2189−606.089 − 298.15 × 0.397 C?l = −266.758 × 10X In order to calculate the work loss in the furnace first of all we calculate the entropy in the system (furnace/boiler). > = @VN`∆> + >db Dc Ad6.6858 − 0.6580 (11) > = 568.1293 F!" Now work lost in the furnace is given by. lV = UV∆> (12) lV = 298.15 × 568.1293 lV = 169.387 × 10X This is the work lost only in the furnace/boiler integrated with the steam power plant. The efficiency of the furnace can be calculated as. d@B = (13) d@B = 169.387 × 10X266.758 × 10X d@B = 63.50% Results and Discussion The results of this Theoratical thermodynamic analysis of furnace/boiler integrated with a steam power plant shows that at 1mole of methane with complete combustion in 30% access air shows an efficiency of 63.50% and ...

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...ineers and been applied to various utility sectors and thermal processes. Recently, much attention has been paid to the energy and exergy modeling techniques for energy-utilization assessments in order to attain energy savings, and hence financial savings. The energy utilization of a country can be assessed using exergy analysis to gain insights into its efficiency. This approach was first introduced in a landmark paper by Reistad [4], who applied it in the US. Since then, several other countries, e.g., Canada [5, 6, 7]; Japan, Finland and Sweden [8,9]; Italy [10]; Turkey [11, 12, 13]; the UK [14]; and Norway [ 15,16] have been examined in such a way using modified versions of this approach or different modeling techniques. More recently, Dincer et al. [ 17,18] investigated the energy and exergy utilization in industrial and transportation sectors only out of six major economic sectors of Saudi Arabia, namely residential, public and private, industrial, transportation, agricultural and electrical utility, as shown in detail in Fig. 1 as a macrosystem. In the current investigation, the authors extended the study with power generation data to cover the utility sector. Therefore, the prim...

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...is operating above 80% capacity. This is inscontrast to a strict merit order assumption where the conventional plant would only operate once the CCS plantswas at maximum capacity. Hammond & Stapleton =-=[24]-=- were followed in taking the input to non-thermalsrenewable energy systems and imports to be equal to their electrical output. CCS plant electrical efficiency wasstaken from [25]. Transmission and dis...