Analysis of Maisotsenko open gas turbine bottoming cycle

•Developed an accurate air saturator model.•Introduced Maisotsenko bottoming cycle (MBC) as a power generation cycle.•Performed Thermodynamic optimization for MBC and air bottoming cycle (ABC).•Performed detailed sensitivity analysis for MBC under different operating conditions.•MBC has higher efficiency and specific net work output as compared to ABC.

Maisotsenko gas turbine cycle (MGTC) is a recently proposed humid air turbine cycle. An air saturator is employed for air heating and humidification purposes in MGTC. In this paper, MGTC is integrated as the bottoming cycle to a topping simple gas turbine as Maisotsenko bottoming cycle (MBC). A thermodynamic optimization is performed to illustrate the advantages and disadvantages of MBC as compared with air bottoming cycle (ABC). Furthermore, detailed sensitivity analysis is reported to present the effect of different operating parameters on the proposed configurations' performance. Efficiency enhancement of 3.7% is reported which results in more than 2600 tonne of natural gas fuel savings per year.