Heat recuperation is often used to improve the overall cycle efficiency of gas turbines. However, generally in small- scale gas turbines, it has a negative effect on turbine inlet temperature, pressure ratio and pressure drops, and thus decreases the overall cycle efficiency. In this paper, a thermodynamic model is performed to evaluate recovered heat as a function of heat exchanger effecti...

Heat recuperation is often used to improve the overall cycle efficiency of gas turbines. However, generally in small- scale gas turbines, it has a negative effect on turbine inlet temperature, pressure ratio and pressure drops, and thus decreases the overall cycle efficiency. In this paper, a thermodynamic model is performed to evaluate recovered heat as a function of heat exchanger effectivene...

Self-recuperative burners are a common solution for efficient combustion systems in industrial furnaces. Due to the geometric complexity of recuperators, detailed CFD simulation is computationally expensive and not feasible models burner-integrated such as radiant tubes. Especially FSI studies tubes, temperature tube surrounding burner decisive final results. The exclusion recuperator from intr...

The representation of the resistance to heat transfer in regenerators, due to the finite thermal conductivity and a significant thickness of the heat storing packing, has been a continuing theoretical problem. This paper discusses the evolution of this theory from its early beginnings in the 1920’s. In particular, the development of the pseudo-recuperator model in the first Melchett lecture by ...

Performance expectations of closed-Brayton-cycle heat exchangers to be used in 100-kWe nuclear space power systems were forecast. Proposed cycle state points for a system supporting a mission to three of Jupiter’s moons required effectiveness values for the heat-source exchanger, recuperator and rejection exchanger (gas cooler) of 0.98, 0.95, and 0.97, respectively. Performance parameters such ...

An approach to mesoscale electric power production is presented which relies on a clean and efficient combustor coupled with a free-piston Stirling engine. The design and development of a catalytic combustor is discussed, whose main components are: a multiplexed electrospray to disperse jet propulsion fuel (JP-8), a stack of catalytically coated grids through which fuel conversion and heat rele...