Integrated Biomass Gasification Combined Cycle Plant for Small Scale Generation: Part B- Exergetic and Exergo-economic Analyses

International Conference on Mechanical, Materials and Renewable Energy

机械制造;材料科学;能源学

Mondal, P.^1 ; Ghosh, S.^2

Dept. of Mechanical Engineering, SKFGI, Mankundu

West Bengal, India^1

Dept. of Mechanical Engineering, IIEST, Shibpur

West Bengal, India^2

关键词: Biomass Gasification;    Biomass integrated gasification combined cycles;    Combined cycle plant;    Exergetic performance;    Exergy destructions;    Operating parameters;    Operational parameters;    Small-scale generations;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/377/1/012055/pdf
DOI  :  10.1088/1757-899X/377/1/012055

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

This part of the paper deals with the exergetic and exergo-economic analyses of a small scale biomass integrated gasification combined cycle (BIGCC) plant. Basic configuration and operational parameters are same as those considered in Part A of the paper. Exergy analysis is conducted to analyze the component exergy destruction for identification of major exergy destroying components and for their exergy efficiency calculations. However, exergo-economic analysis investigates the effect of plant operating parameters on the fuel and product exergy cost rate(cf and cp), relative cost difference (rk), exergo-economic factor (f) and unit product cost (cp-plant) of the plants. Exergy analysis of the plant shows that an enormous amount of exergy is lost at the gasifier and at the combustion chamber. At higher TITs, exergy efficiency of the major plant components is higher, indicating a better exergetic performance of the plant at elevated TITs. Exergo-economic study indicates that the values of rk, f and unit product cost are 189.69 %, 62.13% and 0.0058 $/MJ at the base case (rp=4 & TIT=1000 °C). Also the value of these parameters increases with increase in rp, for all TITs. However, higher TIT yields in better exergo-economic performance of plant for considered range of rp values.