Energy conversion in shape memory alloy heat engine part II: simulation

Jiujiang Zhu, N. G. Liang, W. M. Huang, K. M. Liew

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

In this paper, a theoretical model proposed in Part I (Zhu et al., 2001a) is used to simulate the behavior of a twin crank NiTi SMA spring based heat engine, which has been experimentally studied by Iwanaga et al. (1988). The simulation results are compared favorably with the measurements. It is found that (1) output torque and heat efficiency decrease as rotation speed increase; (2) both output torque and output power increase with the increase of hot water temperature; (3) at high rotation speed, higher water temperature improves the heat efficiency. On the contrary, at low rotation speed, lower water temperature is more efficient; (4) the effects of initial spring length may not be monotonic as reported. According to the simulation, output torque, output power and heat efficiency increase with the decrease of spring length only in the low rotation speed case. At high rotation speed, the result might be on the contrary.
Original languageEnglish
Pages (from-to)133-140
Number of pages8
JournalJournal of Intelligent Material Systems and Structures
Volume12
Issue number2
DOIs
Publication statusPublished - Feb 2001

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