Exergo-economic analysis of performance of a hot air generation system using producer gas as fuel instead of light diesel oil to determine thermo-economic De-rating factor (part II)

Abstract

ABSTRACT Exergo-economic analysis is carried out using the data given in Part I, for both LDO fired and PG fired HAG. While carrying out the analysis in each case, three key parameters influencing the cost of operation of the system were identified, viz. capital cost, electricity cost, and fuel cost. Each parameter is allowed to vary 50% beyond that of its basic cost to study the sensitivity of the parameter on operating cost. It is found that cost of fuel is affecting the most in both the cases. Costs of generation of hot air for both the cases are estimated for different mass flow rates and the optimum cost of hot air generation in case of LDO fired and PG fired HAG are found to be about ` 264 and ` 60 per hour respectively. As a result of study a ‘Thermo-economic De-rating factor’ is found to be of the order of 40%, giving savings in operation cost up to 77%