Abstract
Stirling engines are a type of reciprocating external combustion engine that uses one or more pistons to perform useful work with the help of some external heat. The Fluidyne design, also known as the liquid piston Stirling engine, uses liquid as pistons contained in a cylinder that entraps a working gas. Stirling engines are low efficiency engines that can utilize waste and low-grade thermal energy to pump water or do work at a small scale. Excellent opportunities to address difficulties with energy security, water dissipation, and greenhouse gas emissions are provided by the employment of these low-grade waste heat recovery techniques. This research will cover effects of changing water levels and using a mixture of different working liquids of low heat of vaporization on engine performance. Temperature, pressure, amplitude of oscillation variation with time and pumping volume were determined with Vernier sensors and tracking software. This study confirms correlation between working liquid volume and heat of vaporization on engine performance.
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