Cyclic steam generation from a novel zeolite-water adsorption heat pump using low-grade waste heat

Bing Xue, Yoshiho Iwama, Yuuki Tanaka, Kazuya Nakashima, Agung T. Wijayanta, Koichi Nakaso, Jun Fukai

研究成果: Contribution to journalArticle査読

27 被引用数 (Scopus)

抄録

Cyclic steam generation experiments from a novel zeolite-water adsorption heat pump were carried out to demonstrate the feasibility of recycling hot water and low-grade waste gas. A direct heat exchange approach was introduced to enhance heat transfer and decrease system size. The experimental steam generation rate per unit mass of zeolite is 2.44×10-5 (kg-steam/kg-zeolite)/s at regeneration for 1200s, which is 10% larger than that for 3600s. A one-dimensional model describing transport phenomena during regeneration was developed to estimate temperature distributions and local water content in zeolite at the end of regeneration. Based on the numerical results, the mass of steam generated in the subsequent process was calculated. Then, the cyclic steam generation rate can be estimated. Calculated results on steam generation rate agree with the two sets of experimental data. The calculation reveals a maximum in the steam generation rate with the change in regeneration time. Predictions also show the possibility of high-pressure steam generation from this system.

本文言語英語
ページ(範囲)54-63
ページ数10
ジャーナルExperimental Thermal and Fluid Science
46
DOI
出版ステータス出版済み - 4 2013

All Science Journal Classification (ASJC) codes

  • 化学工学(全般)
  • 原子力エネルギーおよび原子力工学
  • 航空宇宙工学
  • 機械工学
  • 流体および伝熱

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