He estimated the consumption of fuel by a theoretically perfect air engine on Mr. Stirling's principle at 0·37 lbs. 弗雷德里克·科利尔·贝克维尔.伟大的事实.
Napier and Rankine, for improvements in the air engine, which they anticipated would remove the objections that have been raised to the engines of Stirling and Ericsson. 弗雷德里克·科利尔·贝克维尔.伟大的事实.
To overcome these objections, the air in Mr. Stirling's engine is compressed before it is heated, by which means an equal amount of pressure is obtained on a smaller piston. 弗雷德里克·科利尔·贝克维尔.伟大的事实.