Experimental measurement of equilibrium vapour pressure of H2O/KCOOH (potassium formate) solution at high concentration
| Autor: | Laura Fedele, Giovanni Antonio Longo |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
High concentration
Desiccant Materials science Vapor pressure 020209 energy Mechanical Engineering Thermodynamics Experimental data 02 engineering and technology Building and Construction Atmospheric temperature range Absorption Potassium formate law.invention chemistry.chemical_compound Pressure measurement 020401 chemical engineering chemistry Equilibrium vapour pressure law 0202 electrical engineering electronic engineering information engineering Resistance thermometer 0204 chemical engineering |
| Zdroj: | International journal of refrigeration 93 (2018): 176–183. doi:10.1016/j.ijrefrig.2018.06.015 info:cnr-pdr/source/autori:Longo G. A.; Fedele L./titolo:Experimental measurement of equilibrium vapour pressure of H2O%2FKCOOH (potassium formate) solution at high concentration/doi:10.1016%2Fj.ijrefrig.2018.06.015/rivista:International journal of refrigeration/anno:2018/pagina_da:176/pagina_a:183/intervallo_pagine:176–183/volume:93 |
| ISSN: | 0140-7007 |
| DOI: | 10.1016/j.ijrefrig.2018.06.015 |
| Popis: | This paper presents the measurement of the equilibrium vapour pressure of H2O/KCOOH solution with a concentration in salt from 60 to 80% in the temperature range from 5 to 75 °C typical for desiccant application. The experimental measurements were performed in a VLE apparatus instrumented with a pressure gauge having a maximum uncertainty (k = 2) within ±35 Pa and a platinum resistance thermometer having a maximum uncertainty (k = 2) within ±0.05 K. A set of 40 experimental data points on H2O/KCOOH equilibrium vapour pressure was fully reported and compared with the unique other set of experimental data (Beyer and Steiger, 2010) available in the open literature and also with the estimation of a referenced chemical engineering property database (Aspen Plus®): a reasonable agreement was found in both the cases. A best-fitting regression model based on present set of data was also reported: the mean absolute percentage deviation between experimental and calculated data is 1.1%. |
| Databáze: | OpenAIRE |
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