Authors: Matthew David Marko
The Stirling thermodynamic heat engine cycle is modified, where instead of an ideal gas, a real, supercritical, monatomic working fluid subjected to intermolecular attractive forces is used. The potential energy of real gases is redefined to show it decreasing with temperature as a result of the attractive Keesom forces, which are temperature dependent. This new definition of potential energy is used to thermodynamically design a Stirling cycle heat engine with supercritical xenon gas, and an engine efficiency that exceeds the Carnot efficiency is demonstrated. The change in internal energy predicted is compared to experimental measurements of condensing steam, xenon, argon, krypton, nitrogen, methane, ethane, propane, normal butane, and iso-butane, and the close match validates this new definition of temperature-dependent real gas potential energy, as well as the thermodynamic feasibility of the modified supercritical Stirling cycle heat engine.
Comments: 22 pages, 4 tables, 3 figures
[v1] 2017-09-12 09:12:20
Unique-IP document downloads: 74 times
Vixra.org is a pre-print repository rather than a journal. Articles hosted may not yet have been verified by peer-review and should be treated as preliminary. In particular, anything that appears to include financial or legal advice or proposed medical treatments should be treated with due caution. Vixra.org will not be responsible for any consequences of actions that result from any form of use of any documents on this website.
Add your own feedback and questions here:
You are equally welcome to be positive or negative about any paper but please be polite. If you are being critical you must mention at least one specific error, otherwise your comment will be deleted as unhelpful.