Effect of the thermal insulation on generator and micro gas turbine system

Transient heat transfer between a turbulent lean partially premixed flame in limit cycle oscillation and the walls of a can type combustor

“…This development requires an increasingly accurate prediction of the heat transfer to the walls of the combustion chamber. The interaction between the hot reactants and burned gases with the adjacent colder wall is a main constraint in the design of gas turbine combustion chambers in view of the life time and the reliability [3,4]. As discussed by Carter [5] the temperature gradient in the hot component of a gas turbine increases with the turbine inlet temperature, causing high thermal stresses which may lead to creep failure of the system.…”

Impact of heat transfer on the performance of micro gas turbines

“…The first, baseline, case represents a typical micro turbine configuration used in power generation applications [31]. The impact of material conductivity and micro turbine size is analysed for this baseline configuration.…”

“…The coefficient C in Eq. (1) is derived from conjugate heat transfer simulations on a similar micro gas turbine [31]. A value of 0.0695 was found for both the compressor and turbine.…”

“…The baseline configuration is based on a micro turbine on which conjugate heat transfer results are performed [31]. The micro turbine consists of a 20 mm compressor and turbine impeller mounted on a 8 mm long, 5 mm diameter shaft.…”

Thermal Study for Power Uprating of 400 MW Generator Using Numerical Simulation

“…These types of methods can give a highly accurate and clear view of the temperature distribution within the electric machine [5]. Based on these advantages, numerical method has been applied to assist in analyzing the thermal characteristics of some electric machine: micro gas turbine generator [6], switched reluctance generator [7], large ring motor for mining industry [8], Permanent magnet generator for large direct-drive wind turbines [9], and axial-flux permanent magnet generator [10]. This paper considers the thermal analysis on a 400 MW hydrogen cooled generator using numerical method based on finite element.…”