Performance Prediction of Metal-Organic Frameworks (MOFs) based Desiccants for Adsorption Air-conditioning System

Kan Zu, Menghao Qin*, Shuqing Cui, Pumin Hou

*Corresponding author for this work

Research output: Contribution to conferencePaperResearchpeer-review

Abstract

Metal-organic frameworks (MOFs) are a new class of porous crystalline materials with multiple and tuneable structures, which possess varieties of combinations from different metal clusters and organic ligands. Most MOF-based desiccants exhibit exceptional properties such as remarkable water vapour uptake capacity and gentle regeneration conditions, which make them very competitive for the adsorption air-conditioning system in comparison with conventional desiccants, for example, zeolite etc. The paper aims at investigating the performance of MOF-based adsorption system in comparison with the conventional zeolitebased system. The isotherms of MOF-based desiccants unºCder different temperature have been investigated to estimate the equilibrium concentration of the adsorbed vapour. The experimental results indicate that there is more than 0.4 g/g of mass difference between 20 and 50 ºC at 2000 Pa of water vapour pressure, which means the MOF-based adsorption cooling system can be powered by using low-grade energy around 50-70 ºC temperature range. A mathematical model has been developed based on the general adsorption dynamics for a thin desiccant layer. Numerical simulations have been carried out to predict the change of adsorption dynamics under different vapour pressure. The results have shown that the MOF-based adsorption air-conditioning system powered by the low-grade energy exhibit higher operation performance in comparison with the traditional zeolite-based system.
Original languageEnglish
Publication date2020
Publication statusPublished - 2020
Event 16th Conference of the International Society of Indoor Air Quality & Climate - Online
Duration: 1 Nov 20204 Nov 2020
Conference number: 16

Conference

Conference 16th Conference of the International Society of Indoor Air Quality & Climate
Number16
LocationOnline
Period01/11/202004/11/2020

Bibliographical note

Paper ID ABS-0341

Keywords

  • Air conditioning
  • Metal-organic framework (MOF)
  • Adsorption dynamic
  • Hygrothermal transfer
  • Mathematic model

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