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- Publisher Website: 10.1016/j.ijheatmasstransfer.2012.02.054
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Article: Performance predictions for a new zeolite 13X/CaCl2 composite adsorbent for adsorption cooling systems
Title | Performance predictions for a new zeolite 13X/CaCl<inf>2</inf>composite adsorbent for adsorption cooling systems |
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Authors | |
Keywords | Composite adsorbent Ion-exchange Zeolite 13X Adsorption cooling Adsorption kinetics |
Issue Date | 2012 |
Citation | International Journal of Heat and Mass Transfer, 2012, v. 55, n. 11-12, p. 3214-3224 How to Cite? |
Abstract | Composite adsorbents synthesized from zeolite 13X and CaCl2were investigated for applications in solar adsorption cooling systems. The effects of Ca ion exchange on the adsorption properties of zeolite 13X were studied. Ca ion exchange was found to decrease the specific surface area of the zeolite while increasing the total pore volume. Soaking zeolite 13X in 46 wt.% CaCl2solution for 24 h gave the optimum Ca ion exchange. The increase in the total pore volume facilitated further impregnating the zeolite with CaCl2. In all, 41.5 mol% of CaCl2was impregnated in the Ca-ion-exchanged zeolite from a 40 wt.% CaCl2solution to form the zeolite 13X/CaCl2composite adsorbent. A 0.4 g/g difference in equilibrium water uptake between 25 and 75°C at 870 Pa was recorded for the composite adsorbent. This was 420% of that of zeolite 13X under the same conditions. Numerical simulation predicts that an adsorption cooling system using the composite adsorbent could be powered by a low grade thermal energy source using the temperature range 75-100°C. Greatly improved efficiency is predicted compared to a system using pure zeolite 13X or impregnated silica gel. © 2012 Elsevier Ltd. All rights reserved. |
Persistent Identifier | http://hdl.handle.net/10722/255910 |
ISSN | 2023 Impact Factor: 5.0 2023 SCImago Journal Rankings: 1.224 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Chan, K. C. | - |
dc.contributor.author | Chao, Christopher Y.H. | - |
dc.contributor.author | Sze-To, G. N. | - |
dc.contributor.author | Hui, K. S. | - |
dc.date.accessioned | 2018-07-16T06:14:02Z | - |
dc.date.available | 2018-07-16T06:14:02Z | - |
dc.date.issued | 2012 | - |
dc.identifier.citation | International Journal of Heat and Mass Transfer, 2012, v. 55, n. 11-12, p. 3214-3224 | - |
dc.identifier.issn | 0017-9310 | - |
dc.identifier.uri | http://hdl.handle.net/10722/255910 | - |
dc.description.abstract | Composite adsorbents synthesized from zeolite 13X and CaCl2were investigated for applications in solar adsorption cooling systems. The effects of Ca ion exchange on the adsorption properties of zeolite 13X were studied. Ca ion exchange was found to decrease the specific surface area of the zeolite while increasing the total pore volume. Soaking zeolite 13X in 46 wt.% CaCl2solution for 24 h gave the optimum Ca ion exchange. The increase in the total pore volume facilitated further impregnating the zeolite with CaCl2. In all, 41.5 mol% of CaCl2was impregnated in the Ca-ion-exchanged zeolite from a 40 wt.% CaCl2solution to form the zeolite 13X/CaCl2composite adsorbent. A 0.4 g/g difference in equilibrium water uptake between 25 and 75°C at 870 Pa was recorded for the composite adsorbent. This was 420% of that of zeolite 13X under the same conditions. Numerical simulation predicts that an adsorption cooling system using the composite adsorbent could be powered by a low grade thermal energy source using the temperature range 75-100°C. Greatly improved efficiency is predicted compared to a system using pure zeolite 13X or impregnated silica gel. © 2012 Elsevier Ltd. All rights reserved. | - |
dc.language | eng | - |
dc.relation.ispartof | International Journal of Heat and Mass Transfer | - |
dc.subject | Composite adsorbent | - |
dc.subject | Ion-exchange | - |
dc.subject | Zeolite 13X | - |
dc.subject | Adsorption cooling | - |
dc.subject | Adsorption kinetics | - |
dc.title | Performance predictions for a new zeolite 13X/CaCl<inf>2</inf>composite adsorbent for adsorption cooling systems | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.ijheatmasstransfer.2012.02.054 | - |
dc.identifier.scopus | eid_2-s2.0-84859578085 | - |
dc.identifier.volume | 55 | - |
dc.identifier.issue | 11-12 | - |
dc.identifier.spage | 3214 | - |
dc.identifier.epage | 3224 | - |
dc.identifier.isi | WOS:000303550800047 | - |
dc.identifier.issnl | 0017-9310 | - |