Intensification of NH3 bubble absorption process using advanced surfaces and carbon nanotubes for NH3/LINO3 absorption chillers
This thesis deals with an experimental study on intensification of the ammonia absorption process in the NH3/LiNO3 mixture in vertical bubble mode absorbers using advanced surfaces and nanoparticles of carbon nanotubes (CNTs). Operating conditions selected for the absorber test were obtained from a...
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| Tipo de recurso: | tesis doctoral |
| Estado: | Versión publicada |
| Fecha de publicación: | 2013 |
| País: | España |
| Institución: | Universitat Rovira i virgili (URV) |
| Repositorio: | Repositori Institucional de la Universitat Rovira i Virgili |
| OAI Identifier: | oai:urv.cat:TDX:1295 |
| Acceso en línea: | https://hdl.handle.net/20.500.11797/TDX1295 http://hdl.handle.net/10803/128504 |
| Access Level: | acceso abierto |
| Palabra clave: | 66 - Enginyeria, tecnologia i indústria química. Metal·lúrgia 621 - Enginyeria mecànica en general. Tecnologia nuclear. Electrotècnia. Maquinària 62 - Enginyeria. Tecnologia 536 - Calor. Termodinàmica |
| Sumario: | This thesis deals with an experimental study on intensification of the ammonia absorption process in the NH3/LiNO3 mixture in vertical bubble mode absorbers using advanced surfaces and nanoparticles of carbon nanotubes (CNTs). Operating conditions selected for the absorber test were obtained from a thermodynamic analysis of a single effect absorption cycle with NH3/LiNO3 driven by low temperature heat sources and head released by air. The experiments were conducted in an experimental test facility designed for evaluating the absorber performance at the desired operating conditions. Intensification of the ammonia absorption process was studied using two types of heat exchangers working as bubble absorbers; a plate heat exchanger and a tubular heat exchanger. Experimental results showed that the advanced surfaces and CNTs used significantly improve the ammonia absorption process in the tubular bubble absorber analyzed in comparison with results in the smooth tube absorber with the base fluid. The maximum improvements achieved were higher than 50 %. |
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