Current Undergraduate Research Project
(started Jan 21, 2010)
My own Work
- A novel Stirling/Carnot Cycle Engine
- The ideal Stirling Cycle and
Heat Load on the Regenerator This includes a short discussion on
ideal vs. real gases and the influence of the working fluid on the heat
load of the regenerator via the ratio of specific heats.
- Engines without dedicated
heater and cooler space ( or DHT (Direct Heat Transfer) engines ) Many of
these types of Stirling engine are known
by the phrase LTD (Low Temperature Differential) engines. We are in the
process of developing a sequence of programs of ever increasing
sophistication of simulating such Stirling engines. Follow the link and
see what's available to investigate power vs. RPM and influence of
phase lag between displacer and power piston.
- Schmidt Analysis and
Optimization Here I use the Schmidt analysis to find optimal
configurations ( volumes and volume phase lag ) for Stirling Engines
and perform some calculations on the heating loads for compression,
kooler, regenerator, heater, and expansion space.
- Ideal Adiabatic
Simulation This includes a development of the relevant mathematical
equations based on conservation of mass and energy using ideal gas as
working fluid. A links to several web-based programs is available
estimates of power output and other engine characteristics based on a modest
amount of input parameters using the concepts of the ideal adiabatic
simulation and allow optimization of engine parameters.
- Some mechanical drives used in conjunction with Stirling Engines. Includes evaluation of some of the drives and links
to web-based computer programs for the more complicated cases.
- Investigation of the 4-bar linkage
(bowtie mechanism) to convert circular into (almost) linear motion.
This section contains a link to a web based programs to achieve
Information I gleaned off the web and from discussions of
user groups like SESUSA (Stirling Engine Society - USA, english) , HAES (HotAirEngineSociety, english), and
stirlingmotor ( Entwicklung und Bau von Stirling Maschinen , German ).
My heartfelt thanks to all of their members for many worthwhile thoughts.
Zig Herzog; firstname.lastname@example.org
Last revised: 11/03/10