Archive for the ‘Analysis Tools’ Category
Wednesday, July 21st, 2010
Rev 1: See details at bottom.
Let me summarize what has been covered and what remains in this efficiency analysis:
Component
Power
percentage of total power
Efficiency analysis
Heat lost directly to the environment
40.3w
58.4%
Part 1
...
Posted in Analysis Tools, Performance testing, Thermodynamics | 2 Comments »
Wednesday, July 7th, 2010
Let me summarize what has been covered and what remains in this efficiency analysis:
Component
Power
percentage of total power
Efficiency analysis
Heat lost directly to the environment
40.3w
58.4%
Part 1
Thermal shorting: heat conduction directly from the hot end to the cold end
5.9w
8.6%
Part ...
Posted in Analysis Tools | 1 Comment »
Saturday, July 3rd, 2010
Continuing with the analysis of where the input power (heat) to the engine goes, the next item to consider is the conduction loss often referred to as thermal shorting.
Conduction losses
A Stirling engine of gamma configuration, such as the one being considered, uses a displacer to shuttle ...
Posted in Analysis Tools, Heat Transfer, Thermodynamics | 1 Comment »
Thursday, July 1st, 2010
In an earlier post I measured 1.05 watts output from my engine 3F using a 69 watt input. This computes to 1.5% efficiency. So where did the other 68 watts go? The following is my analysis of where all the energy went. It won’t be as rigorous as I would ...
Posted in Analysis Tools, Heat Transfer | 3 Comments »
Friday, November 13th, 2009
Stirling Engine Simulator
I recently added a Stirling engine simulator to this site. It’s shown on your right in the navigation bar under the Pages heading. The guide below should be helpful to those interested in using the simulator. In the future I’ll post more information on using the simulator and ...
Posted in Analysis Tools, Simulation | 4 Comments »
Tuesday, June 24th, 2008
This Excel 2003 spreadsheet stirling-cycle-ideal-v-02 lets you input the basic values for a Stirling cycle engine and calculates various quantities such as pressures, work in, work out, heating, cooling, and ideal efficiency.
Don’t use this spreadsheet with the idea that your engine will get close to the values it shows ...
Posted in Analysis Tools, Simulation | 1 Comment »