Thermal Engine Using Nitinol Wire

Ibrahim, Ghaleb; Haggag, Salem; Qassem, Laith Al; Diab, Moon; Abbas, Hadi

doi:10.1109/educon.2019.8725041

Cited by 5 publications

(2 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The engine is designed by planting arrays of NiTi SMA engines on a pipe of wastewater to convert thermal energy to mechanical for maximizing output power. Ibrahim et al also used this type of design for the generation of electricity [81]. A smaller driving pulley is dipped into the hot water while the larger driven pulley is positioned outside, and is connected to a generator for electricity generation.…”

Section: Unsynchronized Pulley Engines Typementioning

confidence: 99%

“…When hot water was used in the second experiment as a source of heat, the engine performance was reduced with the highest speed of 46 rpm. Ibrahim et al conducted a research project using an unsynchronized pulley SMA heat engine, and they achieved 405 mV of electricity at 400 rpm and maximum efficiency of 2.6% at a maximum difference temperature of 90 • C [81]. Kumar et al used an unsynchronized pulley engine, and its rotational speed and torque are measured to determine the power of the engine [80].…”

Section: Efficiency and Thermodynamics Thermal Recovery Of The Sma He...mentioning

confidence: 99%

See 1 more Smart Citation

A review on Nitinol shape memory alloy heat engines

Abubakar

Wang

2020

Smart Mater. Struct.

View full text Add to dashboard Cite

Nitinol (NiTi) shape memory alloy (SMA) heat engine is a very promising candidate application of SMA since its invention, but yet to be put as commercial due to its low efficiency and performance. In this paper, a review of different types of NiTi SMA heat engine is presented. The review is done based on the following headings: conceptual design, constitutive driving model, the performance of the engine, and engine limitations. Factors like temperature, cooling rate, size of NiTi SMA element, and the stretch ratio of NiTi SMA spring were identified as determinants of final output power and efficiency of SMA heat engines. It is found that a crankshaft NiTi SMA heat engine produced the highest power output value of 4 watt, an unsynchronized pulley NiTi SMA heat engine with 11.3% of engine efficiency has the highest engine performance so far recorded. Some engine's drawbacks like an improper driving model, drag loss, backsliding were identified as the major problem affecting the engine performance, and which, if solved, will increase the overall performance and efficiency for future development toward its commercialization.

show abstract

Section: Unsynchronized Pulley Engines Typementioning

confidence: 99%

Section: Efficiency and Thermodynamics Thermal Recovery Of The Sma He...mentioning

confidence: 99%