Skip to content Skip to navigation
University of Warwick
  • Study
  • |
  • Research
  • |
  • Business
  • |
  • Alumni
  • |
  • News
  • |
  • About

University of Warwick
Publications service & WRAP

Highlight your research

  • WRAP
    • Home
    • Search WRAP
    • Browse by Warwick Author
    • Browse WRAP by Year
    • Browse WRAP by Subject
    • Browse WRAP by Department
    • Browse WRAP by Funder
    • Browse Theses by Department
  • Publications Service
    • Home
    • Search Publications Service
    • Browse by Warwick Author
    • Browse Publications service by Year
    • Browse Publications service by Subject
    • Browse Publications service by Department
    • Browse Publications service by Funder
  • Help & Advice
University of Warwick

The Library

  • Login
  • Admin

Studies on equilibrium and dynamic characteristics of new adsorption pairs

Tools
- Tools
+ Tools

Zhong, Y. (2006) Studies on equilibrium and dynamic characteristics of new adsorption pairs. PhD thesis, University of Warwick.

[img]
Preview
PDF (Thesis)
WRAP_THESIS_Zhong_2006.pdf - Submitted Version - Requires a PDF viewer.

Download (2851Kb)
[img]
Preview
PDF (Coversheet)
WRAP_THESIS_coversheet.pdf - Submitted Version - Requires a PDF viewer.

Download (17Kb)
[img] Other (Permission e-mail)
FW__Digitisation_of_your_PhD_thesis__University_of_Warwick.msg - Other
Embargoed item. Restricted access to Repository staff only

Download (2929Kb)
Official URL: http://webcat.warwick.ac.uk/record=b2116168~S1

Request Changes to record.

Abstract

In this thesis, research on kinetic and equilibrium state properties of some new adsorption pairs and non-equilibrium models are investigated. In the first part, the equlilibrium characteristics of adsorption pairs using carbon dioxide as adsorbate are studied. The results showed that the performance of this kind of adsorption system is poor due to the low latent heat of carbon dioxide. New composite ammonia adsorbents, 12.3 wt. % CaCl2/C (3C), 17 wt. % CaCl2/Aluminia (SWS), and 59 wt. % BaCl2/vermiculite, were synthesized and studied. It was found that the modification of host matrices by the salt dramatically increases the ammonia uptake. Hysteresis between the synthesis and decomposition reaction was found and the van't Hoff equation was applied to describe the hysteresis. In the second part, kinetic experiments of the composite ammonia adsorbent, 59 wt. % BaCl2/vermiculite, were performed under isothermal conditions and conditions that would be experienced in a real system. Based on the experimental data, a modified linear driving force (LDF) model is used to simulate the dynamics of adsorption pair. In the model, two resistant constants were obtained empirically from the experimental data.
In the third part, the dynamic model of concentration change with heat and mass transfer equation were used to simulate the performance of adsorption system. The results were very encouraging with a maximum COP of around 0.8 and a maximum SCP of around 600W kg-1 in an air conditioning application with one-bed basic cycle. Further studies could focus on the commercial analysis of this promising material in air conditioning. A real lab-scale compact bed could be set up and tested for the performance of adsorption pairs.

Item Type: Thesis or Dissertation (PhD)
Subjects: Q Science > QD Chemistry
T Technology > TP Chemical technology
Library of Congress Subject Headings (LCSH): Carbon dioxide -- Absorption and adsorption, Ammonia -- Absorption and adsorption, Adsorption -- Mathematical models
Official Date: July 2006
Dates:
DateEvent
July 2006Submitted
Institution: University of Warwick
Theses Department: School of Engineering
Thesis Type: PhD
Publication Status: Unpublished
Supervisor(s)/Advisor: Critoph, Robert E.
Extent: x, 208 leaves
Language: eng

Request changes or add full text files to a record

Repository staff actions (login required)

View Item View Item
twitter

Email us: wrap@warwick.ac.uk
Contact Details
About Us