Performance Analysis for Low-Temperature-Difference Stirling Engine : Effect of Gas Flow Losses on Indicated Power

• Published in: Nihon Kikai Gakkai rombunshuu. B hen Vol. 64; no. 619; pp. 952 - 960
• Main Authors: TODA, Fujio, IWAMOTO, Shoichi
• Format: Journal Article
• Language: Japanese; English
• Published: The Japan Society of Mechanical Engineers 1998
• Subjects: Energy Saving
• ISSN: 0387-5016; 0025-6501; 1884-8346; 1943-5649
• DOI: 10.1299/kikaib.64.952

In this paper, new expressions are sought which will allow the rapid and accurate calculation of pressure variation, flow velocities, flow friction losses in crank-driven Stirling engine. The compression and expansion spaces of the Stirling engine are assumed to be isothermal and their volumes are assumed to vary sinusoidally. New expressions are deduced for the amplitude and phase of these variations. Using the expressions so deduced, these formula are derived for frictional losses inside the three heat exchangers (heater, regenerator and cooler), taking into account the variation in mass flow rate, fluid resistance, gas flow and shaft torque over the cycle, By comparing these expressions with the results of calculations using the quasi-steady flow model, it was found that confirmed coincide roughly with the low-temperature-difference Stirling engine.