| Presentation | 2016-11-07 Effect of evaporation and condensation of water vapor on a thermoacoustic engine Kyuichi Yasui, Noriya Izu, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A fluid parcel model is proposed taking into account the Rott equations of a thermoacoustic engine. The effect of non-equilibrium evaporation and condensation of water vapor is taken into account for a wet stack in a thermoacoustic engine. According to the numerical simulations, pV work done by a fluid parcel in a wet stack is larger than that in a dry stack for the traveling-wave thermoacoustic engine. This is due to the larger volume change of a fluid parcel in a wet stack caused by evaporation and condensation of water vapor. On the other hand, for the standing-wave thermoacoustic engine, pV work done by a fluid parcel in a wet stack could be smaller than that in a dry stack at some radius of a stack. It is due to the smaller volume change of a fluid parcel in a wet stack in this case. For any case, the vapor pressure inside a fluid parcel is almost identical to the saturated vapor pressure at the wet stack. A fluid parcel drifts to the higher temperature side in a traveling-wave engine and to the lower temperature side in a standing-wave engine. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | A fluid parcel / wet stack / dry stack / pV work / thermal conduction / non-equilibrium evaporation and condensation |
| Paper # | US2016-54 |
| Date of Issue | 2016-10-31 (US) |
| Conference Information | |
| Committee | US |
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| Conference Date | 2016/11/7(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Nobuyuki Endo(Kanagawa Univ.) |
| Vice Chair | Yoichi Itoh(Nihon Univ.) / Minoru Kurosawa(Tokyo Inst. of Tech.) |
| Secretary | Yoichi Itoh(Univ. of Electro-Comm.) / Minoru Kurosawa(Univ. of Toyama) |
| Assistant | Takeshi Morita(Univ. of Tokyo) |
| Paper Information | |
| Registration To | Technical Committee on Ultrasonics |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Effect of evaporation and condensation of water vapor on a thermoacoustic engine |
| Sub Title (in English) | Numerical simulations by a fluid parcel model |
| Keyword(1) | A fluid parcel |
| Keyword(2) | wet stack |
| Keyword(3) | dry stack |
| Keyword(4) | pV work |
| Keyword(5) | thermal conduction |
| Keyword(6) | non-equilibrium evaporation and condensation |
| 1st Author's Name | Kyuichi Yasui |
| 1st Author's Affiliation | National Institute of Advanced Industrial Science and Technology (AIST)(AIST) |
| 2nd Author's Name | Noriya Izu |
| 2nd Author's Affiliation | National Institute of Advanced Industrial Science and Technology (AIST)(AIST) |
| Date | 2016-11-07 |
| Paper # | US2016-54 |
| Volume (vol) | vol.116 |
| Number (no) | US-288 |
| Page | pp.pp.29-34(US), |
| #Pages | 6 |
| Date of Issue | 2016-10-31 (US) |