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Kentucky Engine Lab Report

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Introduction

Energy is very important in our society, so we need engines that are as efficient as possible. Two of our four members followed a course called Introduction to Energy and Environment which briefly had some engines as subject, including the Stirling engine. Since Stirling engines have the possibility to be very efficient we decided to build our own Sterling engine for the physics lab 2 course.
The Stirling engine was invented in 1816 by Robert Stirling. It was first put to practical use in 1818 as an engine for pumping water in a quarry. The Stirling engine was developed as a safer alternative to the steam engines of the time, whose boilers frequently exploded, causing many injuries and fatalities.
Robert Stirling and his brother James, an engineer, continued improving the original design. In 1843, the engine had sufficient power output to drive all the …show more content…

(Charles' Law). If the gas is held in a variable volume container, constructed from a movable piston in a cylinder closed at one end, the pressure increases and decreases will cause the piston to move out and in. Repeated heating and cooling will cause a reciprocating movement of the piston which can be converted to rotary motion using a conventional connecting rod and a crankshaft with a flywheel.
This movable piston is known as the displacer, which moves back and forth inside the cylinder, thus shuttling the gas from one end to the other. As the displacer moves, the gas leaks around the gap between the displacer and the cylinder wall. The displacer produces no power itself and only uses enough energy to circulate the gas within the cylinder. Power is extracted from the thermal system by using the volume/pressure variations of the gas at the cold end of the cylinder to push a separate "power piston" back and forth. Many different piston and displacer configurations are

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