TY - JOUR

T1 - Experimental Study on a Standing Wave Thermoacoustic Prime Mover with Air Working Gas at Various Pressures

AU - Setiawan, Ikhsan

AU - Achmadin, Wahyu N.

AU - Murti, Prastowo

AU - Nohtomi, Makoto

PY - 2016/5/5

Y1 - 2016/5/5

N2 - Thermoacoustic prime mover is an energy conversion device which converts thermal energy into acoustic work (sound wave). The advantages of this machine are that it can work with air as the working gas and does not produce any exhaust gases, so that it is environmentally friendly. This paper describes an experimental study on a standing wave thermoacoustic prime mover with air as the working gas at various pressures from 0.05 MPa to 0.6 MPa. We found that 0.2 MPa is the optimum pressure which gives the lowest onset temperature difference of 355 °C. This pressure value would be more preferable in harnessing low grade heat sources to power the thermoacoustic prime mover. In addition, we find that the lowest onset temperature difference is obtained when rh /δk ratio is 2.85, where r h is the hydraulic radius of the stack and δk is the thermal penetration depth of the gas. Moreover, the pressure amplitude of the sound wave is significantly getting larger from 2.0 kPa to 9.0 kPa as the charged pressure increases from 0.05 MPa up to 0.6 MPa.

AB - Thermoacoustic prime mover is an energy conversion device which converts thermal energy into acoustic work (sound wave). The advantages of this machine are that it can work with air as the working gas and does not produce any exhaust gases, so that it is environmentally friendly. This paper describes an experimental study on a standing wave thermoacoustic prime mover with air as the working gas at various pressures from 0.05 MPa to 0.6 MPa. We found that 0.2 MPa is the optimum pressure which gives the lowest onset temperature difference of 355 °C. This pressure value would be more preferable in harnessing low grade heat sources to power the thermoacoustic prime mover. In addition, we find that the lowest onset temperature difference is obtained when rh /δk ratio is 2.85, where r h is the hydraulic radius of the stack and δk is the thermal penetration depth of the gas. Moreover, the pressure amplitude of the sound wave is significantly getting larger from 2.0 kPa to 9.0 kPa as the charged pressure increases from 0.05 MPa up to 0.6 MPa.

UR - http://www.scopus.com/inward/record.url?scp=84978166181&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84978166181&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/710/1/012031

DO - 10.1088/1742-6596/710/1/012031

M3 - Conference article

AN - SCOPUS:84978166181

VL - 710

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - 1

M1 - 12031

T2 - 4th International Conference on Science and Engineering in Mathematics, Chemistry and Physics 2016, ScieTech 2016

Y2 - 30 January 2016 through 31 January 2016

ER -