Taking the municipal solid waste (MSW) incineration power-generating system in Taiyuan City as an example

the indices of each component in the plant

such as unit thermo-economic cost

cost difference

and exergy economic coefficient

etc. have been calculated and analysed by using the structural theory of thermo-economics. Results show that the vulnerable spots in energy utilization mainly to be the heat recovery boiler and the MSW incinerator

the causes are high unit price of fuel and high non-energy expenditure due to high exergy loss and high cost of MSW handling

besides

the equipments used for MSW incineration power-generating system can’t perfectly form a complete set

leading to higher non-energy expenditure of the feed-water pump and the condensate pump.