Introduction to thermoacoustic Stirling engines: First steps and praxis

Introduction to Cyberspace: First Steps

Cyberspace: A word from the pen of William Gibson, science fiction writer, circa 1984. An unhappy word, perhaps, if it remains tied to the desperate, dystopic vision of the near future found in the pages of Neuromancer (1984) and Count Zero (1987)—visions of corporate hegemony and urban decay, of neural implants, of a life in paranoia and pain—but a word, in fact, that gives a name to a new sta...

Multiphase Stirling Engines

Analysis, design, fabrication, and experimental assessment of a symmetric three-phase free-piston Stirling engine system is discussed in this paper. The system is designed to operate with moderate-temperature heat input that is consistent with solar-thermal collectors. Diaphragm pistons and nylon flexures are considered for this prototype to eliminate surface friction and to provide appropriate...

A hot air driven thermoacoustic-Stirling engine

Acoustic streaming measurements in annular thermoacoustic engines.

Experiments with an annular thermoacoustic engine employing quasiadiabatic interaction between traveling acoustic waves and an inhomogeneously heated porous material indicate the presence of a closed-loop mass flux. A qualitative modeling of the enthalpy flux in the thermoacoustic core provides an opportunity to estimate the thermal convection associated with this mass flux, by using temperatur...

Design analysis methods for Stirling engines

Journal of Energy in Southern Africa • Vol 19 No 3 • August 2008 Abstract Worldwide attempts are being made to increase the use of our renewable energy sources as well as to use our current fossil fuel energy sources more efficiently. Waste heat recovery forms a substantial part of the latter and is the focus of this project. Stirling technology finds application in both the renewable energy se...