A measurement method of adsorption/desorption rate controlled by adsorbent temperature in moist air of atmospheric pressure

Takafumi Ouchi, Yoshinori Hamamoto, Hideo Mori

研究成果: 会議への寄与タイプ論文

2 引用 (Scopus)

抄録

Adsorption/desorption phenomena which are reactions of adsorbing vapor with exotherm and desorbing vapor with endotherm depend on adsorbent temperature and vapor pressure. When the pressure is constant, the amount of the adsorbed vapor increases with decreasing the adsorbent temperature generally. Adsorption/desorption rate controlled by the adsorbent temperature in constant pressure dominates the performance of adsorption chillers or desiccant systems. To predict the system performance, it is important to measure accurately the variation in the adsorbed amount and the adsorbent temperature in transient adsorption/desorption process. Generally, gravimetric method is used to measure the adsorption/desorption rate from adsorbent weight change, because this method allows measuring that in constant pressure. However, these methods cannot measure the adsorbent temperature directly and accurately. Therefore, we investigated to improve the measurement accuracy of adsorbent temperature, and then we tried to establish a measurement method on adsorption/desorption rate with a cantilever. In this study, adsorption/desorption rate was measured from difference in deflection of the cantilever caused by weight change of adsorbent with laser displacement sensor. We confirmed that 77 mg variation of weight can be measured within 2 mg accuracy. We measured the adsorbed water vapor mass of porous alumina film in adsorption and desorption processes alternately, and discussed the influence of adsorbent temperature on those rates. Furthermore, the diffusivity of water vapor in adsorbent has been obtained and compared with the data measured by conventional method. Finally, we confirmed that this method can detect the mass and temperature changes precisely then it leads to accurate diffusivity.

元の言語英語
出版物ステータス出版済み - 1 1 2014
イベント15th International Heat Transfer Conference, IHTC 2014 - Kyoto, 日本
継続期間: 8 10 20148 15 2014

その他

その他15th International Heat Transfer Conference, IHTC 2014
日本
Kyoto
期間8/10/148/15/14

Fingerprint

adsorbents
Adsorbents
Atmospheric pressure
Desorption
atmospheric pressure
desorption
Adsorption
adsorption
air
Air
Temperature
temperature
Vapors
vapors
Water vapor
diffusivity
water vapor
desiccants
Vapor pressure
vapor pressure

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Condensed Matter Physics

これを引用

Ouchi, T., Hamamoto, Y., & Mori, H. (2014). A measurement method of adsorption/desorption rate controlled by adsorbent temperature in moist air of atmospheric pressure. 論文発表場所 15th International Heat Transfer Conference, IHTC 2014, Kyoto, 日本.

A measurement method of adsorption/desorption rate controlled by adsorbent temperature in moist air of atmospheric pressure. / Ouchi, Takafumi; Hamamoto, Yoshinori; Mori, Hideo.

2014. 論文発表場所 15th International Heat Transfer Conference, IHTC 2014, Kyoto, 日本.

研究成果: 会議への寄与タイプ論文

Ouchi, T, Hamamoto, Y & Mori, H 2014, 'A measurement method of adsorption/desorption rate controlled by adsorbent temperature in moist air of atmospheric pressure' 論文発表場所 15th International Heat Transfer Conference, IHTC 2014, Kyoto, 日本, 8/10/14 - 8/15/14, .
Ouchi T, Hamamoto Y, Mori H. A measurement method of adsorption/desorption rate controlled by adsorbent temperature in moist air of atmospheric pressure. 2014. 論文発表場所 15th International Heat Transfer Conference, IHTC 2014, Kyoto, 日本.
Ouchi, Takafumi ; Hamamoto, Yoshinori ; Mori, Hideo. / A measurement method of adsorption/desorption rate controlled by adsorbent temperature in moist air of atmospheric pressure. 論文発表場所 15th International Heat Transfer Conference, IHTC 2014, Kyoto, 日本.
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