Please use this identifier to cite or link to this item:
https://hdl.handle.net/10321/4692
DC Field | Value | Language |
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dc.contributor.author | Ngema, Peterson Thokozani | en_US |
dc.contributor.author | Naidoo, Paramespri | en_US |
dc.contributor.author | Mohammadi, Amir H. | en_US |
dc.contributor.author | Richon, Dominique | en_US |
dc.contributor.author | Ramjugernath, Deresh | en_US |
dc.date.accessioned | 2023-03-28T13:58:31Z | - |
dc.date.available | 2023-03-28T13:58:31Z | - |
dc.date.issued | 2016-04-15 | - |
dc.identifier.citation | Ngema, P.T. et al. 2016. Thermodynamic stability conditions of clathrate hydrates for refrigerant (R134a or R410a or R507) with MgCl2 aqueous solution. Fluid Phase Equilibria. 413: 92-98. doi:10.1016/j.fluid.2015.11.002 | en_US |
dc.identifier.issn | 0378-3812 | - |
dc.identifier.issn | 1879-0224 (Online) | - |
dc.identifier.other | isidoc: DF7RA | - |
dc.identifier.uri | https://hdl.handle.net/10321/4692 | - |
dc.description.abstract | Clathrate hydrate dissociation data were measured for systems comprising of refrigerants (R134a, R410a and R507) + water + MgCl2 at varying salt concentrations. The ternary system for R134a + water + MgCl2 was measured at salt concentrations of (0.259, 0.546, and 0.868) mol.kg-1 in the temperature range of (277.1-283) K and a pressure range of (0.114-0.428) MPa. Hydrate measurements for the {R410a or R507} + water + MgCl2 systems were measured at salt concentrations of (0.259 and 0.546) mol.kg-1 in the temperature range of (274.3-293) K and a pressure range of (0.154-1.421) MPa. The isochoric pressure-search method was used to measure the hydrate dissociation data. This study is a continuation of previous investigations which focused on obtaining hydrate dissociation data for R134a, R410a and R507 refrigerants in NaCl and CaCl2 aqueous solutions. The measured hydrate dissociation data can be used to design industrial wastewater treatment and desalination processes. The results show that the effect of salt concentration on hydrate formation is smaller for MgCl2 aqueous solutions compared to CaCl2 and NaCl as salt concentration increases. Modelling of the measured data is performed using a combination of the solid solution theory of van der Waals and Platteeuw, the Aasberg-Petersen et al. model, and the Peng-Robinson equation of state with classical mixing rules. The model is in good agreement with the measured hydrate dissociation data. | en_US |
dc.format.extent | 7 p | en_US |
dc.language.iso | en | en_US |
dc.publisher | Elsevier BV | en_US |
dc.relation.ispartof | Fluid Phase Equilibria; Vol. 413 | en_US |
dc.subject | Gas hydrate | en_US |
dc.subject | Clathrate hydrate | en_US |
dc.subject | Desalination | en_US |
dc.subject | Refrigerant | en_US |
dc.subject | Dissociation data | en_US |
dc.subject | Model | en_US |
dc.subject | 0203 Classical Physics | en_US |
dc.subject | 0306 Physical Chemistry (incl. Structural) | en_US |
dc.subject | 0904 Chemical Engineering | en_US |
dc.subject | Chemical Engineering | en_US |
dc.title | Thermodynamic stability conditions of clathrate hydrates for refrigerant (R134a or R410a or R507) with MgCl2 aqueous solution | en_US |
dc.type | Article | en_US |
dc.date.updated | 2023-03-27T14:48:32Z | - |
dc.identifier.doi | 10.1016/j.fluid.2015.11.002 | - |
local.sdg | SDG06 | - |
item.languageiso639-1 | en | - |
item.fulltext | With Fulltext | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.grantfulltext | open | - |
item.openairetype | Article | - |
item.cerifentitytype | Publications | - |
Appears in Collections: | Research Publications (Engineering and Built Environment) |
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Fluid Phase Equilibria Copyright Clearance.docx | Copyright clearance | 194.72 kB | Microsoft Word XML | View/Open |
Ngema et al 2016.pdf | Article | 663.19 kB | Adobe PDF | View/Open |
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