A Stirling Engine is an external combustion engine in which the working fluid is usually either air/nitrogen or helium. However the power developed by the engine is directly proportional to the pressure of the working fluid and is adversely affected by the leakage of working fluid through the system. A Stirling Engine is being developed with air as working fluid and having pressures between 0.8 bar to 3 bar. The temperature of air inside the Engine will be 300°C.
B1.1. Draw a simple schematic of a Stirling Engine and explain its construction with respect to the pressure measurement.
B1.2. Suggest a suitable Pressure Measuring Technique with simple diagram to measure the pressure inside the cylinder without allowing any air leakage