Improvement of adsorption heat exchangers by the enhancement of contact points between adsorbent and surface

Masakazu Sato, Takahiko Miyazaki, Yuki Ueda, Atsushi Akisawa

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抄録

In this study, we are aiming at the improvement of heat exchangers for the adsorption heat pump. To achieve it, it is important to reduce thermal contact resistance between adsorbent and heat transfer surface. The thermal contact resistance can be reduced by increasing the contact points between adsorbents and heat transfer surface. To increase the contact points, four patterns of heat transfer surface geometry were examined. They are flat surface, V-shaped surface, oblong surface, and arc shaped surface, which have one, two, three and maximum contact points, respectively. The flat surface is the one used by the conventional heat exchanger, and the arc shaped surface is the ideal one. The heat conduction in the adsorbent (silica gel) bed was predicted by mathematical simulation. The structure of adsorbent bed was the hexagonal closest packing. For the fundamental analysis, a two dimensional model was developed, and steady-state simulation was performed. The results showed that V-shaped surface could increase heat flux by 10 %. In addition, the reduction of the thermal contact resistance was more effective on the thinner adsorbent layer than that on the thicker one.

本文言語英語
ホスト出版物のタイトル5th Asian Conference on Refrigeration and Air Conditioning, ACRA 2010 - Green Breeze from Asia
ホスト出版物のサブタイトルFrontiers of Refrigerants, Heat Transfer and System
出版社Japan Society of Refrigeration and Air Conditioning Engineering (JSRAE)
ISBN(電子版)9781634391252
出版ステータス出版済み - 1 1 2010
外部発表はい
イベント5th Asian Conference on Refrigeration and Air Conditioning - Green Breeze from Asia: Frontiers of Refrigerants, Heat Transfer and System, ACRA 2010 - Tokyo, 日本
継続期間: 6 7 20106 9 2010

出版物シリーズ

名前5th Asian Conference on Refrigeration and Air Conditioning, ACRA 2010 - Green Breeze from Asia: Frontiers of Refrigerants, Heat Transfer and System

その他

その他5th Asian Conference on Refrigeration and Air Conditioning - Green Breeze from Asia: Frontiers of Refrigerants, Heat Transfer and System, ACRA 2010
Country日本
CityTokyo
Period6/7/106/9/10

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Environmental Engineering

フィンガープリント 「Improvement of adsorption heat exchangers by the enhancement of contact points between adsorbent and surface」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル