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Dynamic Behavior and Load Matching Analysis of the Mark II Free-Piston Stirling Engine Heat Pump
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English
Abstract
The Mark II free-piston heat actuated heat pump (HAHP) utilizes a linear magnetic coupling to transfer engine power across a hermetic shell, thereby driving the refrigerant compressor piston. Compliance in the coupling affects the dynamic behavior of the system. This paper presents the results of dynamic/thermodynamic analyses performed on a baseline Mark II design that is intended for the residential heat pump market. The machine has 3 ton cooling capacity at 95°F ambient conditions. Load matching behavior is evaluated using the HFAST Stirling cycle thermodynamics code, coupled to harmonic equations representing the 5 degree-of-freedom free-piston dynamic system. Behavior at outdoor ambients from 115°F to 0°F is presented, along with the results of nonlinear transient simulations done to verify stability.
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Citation
Vincent, R., "Dynamic Behavior and Load Matching Analysis of the Mark II Free-Piston Stirling Engine Heat Pump," SAE Technical Paper 929034, 1992, https://doi.org/10.4271/929034.Also In
References
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