Repositori institucional URV
| URV's Author/s: | Bourouis Chebata, Mahmoud / Vallès Rasquera, Joan Manel |
| Author, as appears in the article.: | Amaris, Carlos; Bourouis, Mahmoud; Valles, Manel |
| Author's mail: | mahmoud.bourouis@urv.cat manel.valles@urv.cat |
| Author identifier: | 0000-0003-2476-5967 0000-0002-0748-1287 |
| Journal publication year: | 2014 |
| Publication Type: | Journal Publications |
| APA: | Amaris, Carlos; Bourouis, Mahmoud; Valles, Manel (2014). Passive intensification of the ammonia absorption process with NH3/LiNO3 using carbon nanotubes and advanced surfaces in a tubular bubble absorber. Energy, 68(), 519-528. DOI: 10.1016/j.energy.2014.02.039 |
| Paper original source: | Energy. 68 519-528 |
| Abstract: | The present study aims to quantify experimentally the individual and simultaneous effects of CNTs (carbon nanotubes) and advanced surfaces on the performance of an NH3/LiNO3 tubular bubble absorber. Operating conditions are those of interest for use in air-cooled absorption chillers driven by low temperature heat sources. Firstly, experimental tests were performed with the tubular absorber fitted with an inner smooth surface to analyze the effect of adding carbon nanotubes (0.01 wt%) to the base mixture NH3/LiNO3. Then, the tubular absorber was tested using an inner advanced surface tube both with and without adding carbon nanotubes to the base mixture NH3/LiNO3. The advanced surface tube is made of aluminum and has internal helical micro-fins measuring 0.3 mm in length. Results show that the maximum absorption mass flux achieved with the CNT binary nanofluid and the smooth tube is up to 1.64 and 1.48 times higher than reference values at cooling-water temperatures of 40 and 35 °C, respectively. It is also found that simultaneous use of CNT nanoparticles and advanced surfaces resulted in a more pronounced increase in the absorption mass flux and solution heat transfer coefficient with respect to the smooth tube absorber with NH3/LiNO3 as a working pair. |
| Article's DOI: | 10.1016/j.energy.2014.02.039 |
| Link to the original source: | https://www.sciencedirect.com/science/article/abs/pii/S036054421400173X |
| Paper version: | info:eu-repo/semantics/acceptedVersion |
| licence for use: | https://creativecommons.org/licenses/by/3.0/es/ |
| Department: | Enginyeria Mecànica |
| Licence document URL: | https://repositori.urv.cat/ca/proteccio-de-dades/ |
| Thematic Areas: | Thermodynamics Renewable energy, sustainability and the environment Química Pollution Modeling and simulation Medicina iii Medicina ii Mechanical engineering Materiais Management, monitoring, policy and law Interdisciplinar Industrial and manufacturing engineering Geografía Geociências General energy Fuel technology Engineering, chemical Engenharias iv Engenharias iii Engenharias ii Engenharias i Energy engineering and power technology Energy (miscellaneous) Energy (all) Energy & fuels Electrical and electronic engineering Economia Civil and structural engineering Ciências ambientais Ciências agrárias i Ciência de alimentos Ciência da computação Building and construction Biotecnología Biodiversidade Administração pública e de empresas, ciências contábeis e turismo |
| Keywords: | Lithium nitrate Carbon nanotubes Bubble absorber Ammonia Advanced surfaces |
| Entity: | Universitat Rovira i Virgili |
| Record's date: | 2024-09-07 |
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