Repository logo
  • English
  • 中文
Log In
Have you forgotten your password?
  1. Home
  2. College of Engineering / 工學院
  3. Mechanical Engineering / 機械工程學系
  4. Adsorption and desorption of silica gel circulating fluidized beds for air conditioning systems
 
  • Details

Adsorption and desorption of silica gel circulating fluidized beds for air conditioning systems

Journal
Applied Energy
Journal Volume
155
Pages
708-718
Date Issued
2015
Author(s)
Chen, C.-H.
Ma, S.-S.
Wu, P.-H.
Chiang, Y.-C.
Chen, S.-L.
SIH-LI CHEN  
DOI
10.1016/j.apenergy.2015.06.041
URI
https://scholars.lib.ntu.edu.tw/handle/123456789/448344
URL
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84934761484&doi=10.1016%2fj.apenergy.2015.06.041&partnerID=40&md5=93f54d90560d93b52f2df3abac70f915
Abstract
This article investigates low-energy consumption silica gel circulating fluidized beds for the dehumidification of air conditioning systems. The system consists of an adsorption bed, a desorption bed, and two fans. The fans drive silica gel particles upward to form fluidized beds; as the particles descend, funnels inside the beds allow particles to move between beds through connecting pipes. The particles circulate between absorption and desorption beds to create a continuous operating dehumidification air conditioning system. To achieve a fluidized state, air velocities between 4.0 m/s and 6.0 m/s and regeneration temperatures between 40 °C and 60 °C, which simulate low-temperature waste heat or solar thermal conditions, were chosen for the study. Altering funnel heights and adding oblique baffles to the system allowed us investigate different adsorption/desorption performances. The results show that single-tube fluidized bed can increase adsorption/desorption performance by 20% and lower the pressure drop by about 30%, compared to the packed bed. The circulating fluidized bed system has the highest Energy Factor by 0.554 kg/kW h, and improve the packed bed system by 124% due to the absence of a motor and has the largest total adsorption rate. Increasing air velocities and regeneration temperatures cause adsorption/desorption performance to rise in circulating fluidized bed systems. A regeneration temperature of 60 °C has the highest total adsorption rate of 343 g/h. Compared to the other funnel heights, a 200 mm funnel height with an oblique baffle that increases circulatory effects improves the total adsorption rate by 14% to reach an adsorption rate of 230 g/h. © 2015 Elsevier Ltd.
Subjects
Circulating fluidized beds; Dehumidification; Low energy consumption; Low pressure drop
SDGs

[SDGs]SDG7

Other Subjects
Adsorption; Air; Air conditioning; Desorption; Drops; Energy utilization; Fluidization; Fluidized bed combustion; Fluidized bed process; Humidity control; Packed beds; Pressure drop; Silica; Silica gel; Waste heat; Absorption and desorptions; Adsorption and desorptions; Circulating fluidized bed; Dehumidification; Low energy consumption; Low pressure drop; Low-temperature waste heats; Regeneration temperature; Fluidized beds; adsorption; air conditioning; desorption; energy conservation; gel; low pressure; low temperature; operations technology; particulate matter; performance assessment; pressure effect; silica; temperature effect; velocity
Type
journal article

臺大位居世界頂尖大學之列,為永久珍藏及向國際展現本校豐碩的研究成果及學術能量,圖書館整合機構典藏(NTUR)與學術庫(AH)不同功能平台,成為臺大學術典藏NTU scholars。期能整合研究能量、促進交流合作、保存學術產出、推廣研究成果。

To permanently archive and promote researcher profiles and scholarly works, Library integrates the services of “NTU Repository” with “Academic Hub” to form NTU Scholars.

總館學科館員 (Main Library)
醫學圖書館學科館員 (Medical Library)
社會科學院辜振甫紀念圖書館學科館員 (Social Sciences Library)

開放取用是從使用者角度提升資訊取用性的社會運動,應用在學術研究上是透過將研究著作公開供使用者自由取閱,以促進學術傳播及因應期刊訂購費用逐年攀升。同時可加速研究發展、提升研究影響力,NTU Scholars即為本校的開放取用典藏(OA Archive)平台。(點選深入了解OA)

  • 請確認所上傳的全文是原創的內容,若該文件包含部分內容的版權非匯入者所有,或由第三方贊助與合作完成,請確認該版權所有者及第三方同意提供此授權。
    Please represent that the submission is your original work, and that you have the right to grant the rights to upload.
  • 若欲上傳已出版的全文電子檔,可使用Open policy finder網站查詢,以確認出版單位之版權政策。
    Please use Open policy finder to find a summary of permissions that are normally given as part of each publisher's copyright transfer agreement.
  • 網站簡介 (Quickstart Guide)
  • 使用手冊 (Instruction Manual)
  • 線上預約服務 (Booking Service)
  • 方案一:臺灣大學計算機中心帳號登入
    (With C&INC Email Account)
  • 方案二:ORCID帳號登入 (With ORCID)
  • 方案一:定期更新ORCID者,以ID匯入 (Search for identifier (ORCID))
  • 方案二:自行建檔 (Default mode Submission)
  • 方案三:學科館員協助匯入 (Email worklist to subject librarians)

Built with DSpace-CRIS software - Extension maintained and optimized by 4Science