Parametric Study on Economic Feasibility of Microturbine Cogeneration Systems by an Optimization Approach

Abstract

Economic feasibility of microturbine cogeneration systems is investigated by analyzing relationships between the optimal number of microturbine units and the maximum energy demands under various conditions. For this purpose, a method to obtain the maximum energy demand at which the optimal number changes is proposed by combining a nonlinear equation problem and an optimal unit sizing problem hierarchically. Based on the proposed method, a map expressing the aforementioned relationships can be illustrated. Through numerical studies carried out on systems installed in hotels by changing the electrical generating efficiency and the capital unit cost of the microturbine cogeneration unit as parameters, the influence of the parameters on the economic feasibility of the microturbine cogeneration system is clarified.

Optimal Control of Distributed Generation System: The State of the Art

“…Ho et al investigated the system performance effect of the structural parameters of turbine, the parameters of waste heat boiler, the dynamic characteristics and the changing states character, and analyzed the relationship between the output power and the generation efficiency of the system [13]. Gamou and Yokoyama optimized the generation system based on micro-turbine by linear programming and mixed-integer linear program [14]. The system optimization function was determined through analyzing the relationship between the optimized amounts of micro-turbine and the max energy demand.…”

Energetic and exergetic analysis of waste heat recovery from a microturbine using organic Rankine cycles

“…where _ W t and _ W p are the pump power and turbine power, respectively, and can be estimated using Equations (5) and (6):…”

“…A significant number of economic and reliability studies have been performed [1][2][3][4][5][6][7], and substantial modeling and simulation work have been performed [8][9][10][11][12]. A significant number of economic and reliability studies have been performed [1][2][3][4][5][6][7], and substantial modeling and simulation work have been performed [8][9][10][11][12].…”

“…The use of microturbine (MT) for power generation has been widely investigated. A significant number of economic and reliability studies have been performed [1][2][3][4][5][6][7], and substantial modeling and simulation work have been performed [8][9][10][11][12]. Typically, MTs have electric power generating efficiencies ranging from 25% to 33% [13], which is comparable with the efficiency of conventional electric power generation by utility companies (%33%).…”