The Study of Medium/Low-Temperature Stirling Engine Power Output Characteristics

Abstract:

Stirling engine has the characteristics of diversification of heat source and high thermal power conversion efficiency. It has broad application prospects in using low-grade energy, such as solar energy, biomass emergy and industrial waste heat. In this paper, Schmidt Method used in the Stirling engine working cycle is analyzed theoretically, and the Stirling engine power output is calculated. The effects of temperature and the average cycle pressure on the output characteristics of the system are analyzed. Theoretical calculations show that the output characteristics can be improved significantly by adjusting the heating temperature and the average cycle pressure. An experiment station is then designed and constructed for the research on Stirling engine power output characteristics. Experimental results show that by improving pre-charge pressure in the working chamber with low temperature conditions, the system can achieve higher power output and thermal efficiency. Pre-charge pressure in the working chamber is adjusted to 2MPa, when the heater tube wall temperature reaches 650 °C, the output power exceeds 1750W, and the effective efficiency will be 23.3%.

• Periodical: Advanced Materials Research (Volumes 860-863)
• Pages: 1431-1435
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.860-863.1431
• Online since: December 2013
• Authors: Wei Dong Sun, Qi Fen Li, Lin Hui Zhao, Li Fei Song, Xin Zhao
• Keywords: Medium/Low-Temperature, Power Output, Stirling Engine

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