Performance test for scale-up characteristics of adsorption steam generators

Koichi Nakaso, Jun Fukai, Tsuguhiko Nakagawa, Kasumi Ito, Yoshio Abe, Yoshiaki Kawakami, Masayuki Tanino, Yoshinori Itaya, Nobusuke Kobayashi, Kenji Marumo, Toshiyuki Aoyama, Tatsuya Masui

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


The performance of steam generators to generate high-temperature steam using waste heat from industrial processes was investigated. Two types of steam generators were constructed. One is a bench-scale cylindrical generator having similar structure to the laboratory-scale reactor used in the authors’ previous research. The other is a scaled-up generator whose flow passage area is extended to store a large amount of adsorbent for further scale-up on practical application. Temperature measurements in the bench-scale generator in the atmospheric steam generation process showed that a high-temperature region is formed above the water level due to adsorption of water vapor, while a low-temperature region below saturation temperature is formed below the water level. The mass of steam generate d per unit mass of adsorbent increased with increasing energy supplied from the regeneration air and approached an asymptotic value depending on the temperature of the regeneration air. The mass of steam generated per unit mass of adsorbent increased with decreasing heat capacity of the generator.

Original languageEnglish
Pages (from-to)71-77
Number of pages7
Issue number1
Publication statusPublished - 2018
Externally publishedYes


  • Adsorption heat pump
  • High-temperature steam
  • Low-grade waste heat
  • Scale-up
  • Zeolite

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering


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