Abstract:

As a shield to block harmful particles,air inlet system plays an important role in safe and economic operation of gas turbine.With increment of operating time, the pressure loss of inlet system increases.Researching update interval of the inlet filtration system from the economy is of realistic importance.Major factors and computing method for the replacement cost of multistage filtration system are discussed,and an optimization model for the update interval of multistage inlet filtration system is proposed on the purpose of minimizing the replacement cost per unit of power generation.Update intervals for coarse filters and fine filters of a gas turbine inlet system are optimized,and the result shows that the filter replacement cost per unit of power generation is 1.2% lower.Finally,effects of gas price and initial cost of filtration system on the optimal update interval of multistage filtration system and replacement cost per unit of power generation are discussed,which are significant for deciding the inlet filtration update interval.

Key words:

font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">gas turbine, inlet filtration system, coarse filters, fine filters, optimal update interval, optimization model, gas price, cost of filter