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Data for Modelling and analysis of ammonia sorption reactions in halide salts
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Hinmers, S., Atkinson, George H., Critoph, Robert E. and van der Pal, Michel (2022) Data for Modelling and analysis of ammonia sorption reactions in halide salts. [Dataset]
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Plain Text (Readme file)
README LTJ.txt - Published Version Available under License Creative Commons Attribution 4.0. Download (1366b) |
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Plain Text (Readme file)
README TC accuracy.txt - Published Version Available under License Creative Commons Attribution 4.0. Download (1961b) |
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Archive (ZIP) (Dataset)
IJR supporting Docs.zip - Published Version Available under License Creative Commons Attribution 4.0. Download (1169Kb) |
Official URL: http://wrap.warwick.ac.uk/152152/
Abstract
This work has focussed on the development of an accurate method for testing and modelling the reaction kinetics involved in ammonia-salt adsorption reactions, something not achieved consistently to date. A Large Temperature Jump (LTJ) test cell has been developed for testing ammonia-salt reactions in real machine conditions. A Large Temperature Jump (LTJ) test cell has been developed for testing ammonia-salt reactions in real machine conditions. This was used to validate a new approach to modelling the behaviour and simulate the performance of chemisorption machines. A derivation of the heat transfer and thermodynamic equations are presented, and a finite difference model described which has been validated for the adsorption and desorption reactions of ammonia into halide salts within a porous matrix. The model is implemented in a MATLAB® program. Large Temperature Jump (LTJ) tests have been conducted on manganese chloride and barium chloride to validate the model and to identify the physical parameters which characterise the dynamic performance of the sorbent. The manganese chloride and barium chloride were impregnated in expanded natural graphite (ENG) (SGL SIGRATHERM®) board. The ENG board gave rise to practicable samples (31.5 mm OD ø over ½” tube) undergoing a desorption reaction in under 250 seconds with the fluid temperature 15°C above the equilibrium temperature, an order of magnitude faster than observed elsewhere. A new test method has been developed enabling an accurate single heat of reaction to be identified due to reduced hysteresis, which is reported for barium and manganese chloride. The model has been validated using experimental data from LTJ tests of two geometric configurations in radial heat transfer: discs heated/cooled from the outside radius (‘tube-side’) and annuli heated from the inner radius (‘shell-side’). The empirical data obtained is a milestone towards designed and optimised salt generators.
Item Type: | Dataset | ||||||||||||
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Subjects: | Q Science > QD Chemistry | ||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||||||
Type of Data: | experimental and theoretical work | ||||||||||||
Library of Congress Subject Headings (LCSH): | Chemisorption, Ammonia -- Absorption and adsorption, Halide minerals -- Absorption and adsorption, Reaction mechanisms (Chemistry) | ||||||||||||
Publisher: | University of Warwick, School of Engineering | ||||||||||||
Official Date: | 2 February 2022 | ||||||||||||
Dates: |
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Status: | Not Peer Reviewed | ||||||||||||
Publication Status: | Published | ||||||||||||
Media of Output (format): | .m .xlsx | ||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||
Copyright Holders: | University of Warwick | ||||||||||||
Description: | Matlab Code, Matlab function, experimental data set and Deadweight Pressure Check Results and Thermocouple Tests |
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Date of first compliant deposit: | 12 May 2021 | ||||||||||||
Date of first compliant Open Access: | 13 May 2021 | ||||||||||||
RIOXX Funder/Project Grant: |
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