Experimental analysis of the evaporation of sugar cane juice by film on a flat plate

In the production of “panela” (a block of unrefined whole cane sugar also known as piloncillo, raspadura, chancaca, jaggery) in Colombia, pans that have been traditionally used for evaporation of sugarcane juice have low energy efficiency problems. In the present study, a flat plate film evaporator...

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Autores Principales: Mendieta Menjura, Oscar Andrés, Escalante Hernández, Humberto
Formato: Artículo (Article)
Lenguaje:Español (Spanish)
Publicado: Corporación Colombiana de Investigación Agropecuaria (Agrosavia) 2019
Acceso en línea:http://hdl.handle.net/20.500.12324/35192
id ir-20.500.12324-35192
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spelling ir-20.500.12324-351922020-07-08T21:27:42Z Experimental analysis of the evaporation of sugar cane juice by film on a flat plate Análisis experimental de la evaporación del jugo de caña de azúcar en película sobre una placa plana Mendieta Menjura, Oscar Andrés Escalante Hernández, Humberto In the production of “panela” (a block of unrefined whole cane sugar also known as piloncillo, raspadura, chancaca, jaggery) in Colombia, pans that have been traditionally used for evaporation of sugarcane juice have low energy efficiency problems. In the present study, a flat plate film evaporator was evaluated at a pilot scale. The temperature of the juice and the plate was measured with thermocouples, and the concentration of the soluble solids of the juice was measured with a refractometer. Evaporator performance was determined through the heat transfer coefficient on the side of liquid (h), which was related to the following operating parameters: mass flow, surface temperature, and the temperature and concentration of the fed liquid. The coefficient h profited by increasing: surface temperature (from 140.8 to 181.2 °C), feed concentration (from 18 to 30 °Brix), and juice feed flow (from 5.7 to 38.4 kg/h), and by decreasing feed temperature (from 90 to 60 °C). In the evaporation of sugarcane juice in a flat plate evaporator, h values between 140 and 380 W/m2K were found, which show a marked improvement for evaporation process of sugarcane juice.   En la producción de panela en Colombia, tradicionalmente se han utilizado pailas para la evaporación del jugo de caña de azúcar, las cuales presentan problemas de baja eficiencia energética. En este estudio se evaluó un evaporador de película en placa plana a escala piloto. La temperatura del jugo y la placa se midieron con termopares, y la concentración de sólidos solubles del jugo se midió con un refractómetro. El rendimiento del evaporador se determinó a través del coeficiente de transferencia de calor en el lado del líquido (h), el cual se relacionó con los parámetros de operación: flujo másico, temperatura de la superficie, y la temperatura y concentración del líquido alimentado. El coeficiente h se benefició por el aumento: de la temperatura de la superficie (de 140,8 a 181,2 °C), de la concentración del alimento (de 18 a 30 °Brix) y del flujo de alimento del jugo (de 5,7 a 38,4 kg/h); y por la disminución de la temperatura del alimento (de 90 a 60 °C). En la evaporación del jugo de caña de azúcar en el evaporador de película en placa plana se encontraron valores de h entre 140 y 380 W/m2K, los cuales muestran una mejora notable para el proceso de evaporación del jugo de caña de azúcar. 2019-08-09T19:30:09Z 2019-08-09T19:30:09Z 2013 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://revistacta.agrosavia.co/index.php/revista/article/view/403 10.21930/rcta.vol14_num2_art:403 http://hdl.handle.net/20.500.12324/35192 reponame:Biblioteca Digital Agropecuaria de Colombia repourl:https://repository.agrosavia.co instname:Corporación colombiana de investigación agropecuaria AGROSAVIA spa http://revistacta.agrosavia.co/index.php/revista/article/view/403/320 application/pdf Corporación Colombiana de Investigación Agropecuaria (Agrosavia) Ciencia y Tecnología Agropecuaria; Vol 14 No 2 (2013); 113-127 Ciencia y Tecnología Agropecuaria; Vol. 14 Núm. 2 (2013); 113-127 revista Corpoica Ciência e Tecnologia Agropecuária; v. 14 n. 2 (2013); 113-127 2500-5308 0122-8706 10.21930/rcta.vol14-num2
institution Agrosavia
collection DSpace
language Español (Spanish)
description In the production of “panela” (a block of unrefined whole cane sugar also known as piloncillo, raspadura, chancaca, jaggery) in Colombia, pans that have been traditionally used for evaporation of sugarcane juice have low energy efficiency problems. In the present study, a flat plate film evaporator was evaluated at a pilot scale. The temperature of the juice and the plate was measured with thermocouples, and the concentration of the soluble solids of the juice was measured with a refractometer. Evaporator performance was determined through the heat transfer coefficient on the side of liquid (h), which was related to the following operating parameters: mass flow, surface temperature, and the temperature and concentration of the fed liquid. The coefficient h profited by increasing: surface temperature (from 140.8 to 181.2 °C), feed concentration (from 18 to 30 °Brix), and juice feed flow (from 5.7 to 38.4 kg/h), and by decreasing feed temperature (from 90 to 60 °C). In the evaporation of sugarcane juice in a flat plate evaporator, h values between 140 and 380 W/m2K were found, which show a marked improvement for evaporation process of sugarcane juice.  
format Artículo (Article)
author Mendieta Menjura, Oscar Andrés
Escalante Hernández, Humberto
spellingShingle Mendieta Menjura, Oscar Andrés
Escalante Hernández, Humberto
Experimental analysis of the evaporation of sugar cane juice by film on a flat plate
author_facet Mendieta Menjura, Oscar Andrés
Escalante Hernández, Humberto
author_sort Mendieta Menjura, Oscar Andrés
title Experimental analysis of the evaporation of sugar cane juice by film on a flat plate
title_short Experimental analysis of the evaporation of sugar cane juice by film on a flat plate
title_full Experimental analysis of the evaporation of sugar cane juice by film on a flat plate
title_fullStr Experimental analysis of the evaporation of sugar cane juice by film on a flat plate
title_full_unstemmed Experimental analysis of the evaporation of sugar cane juice by film on a flat plate
title_sort experimental analysis of the evaporation of sugar cane juice by film on a flat plate
publisher Corporación Colombiana de Investigación Agropecuaria (Agrosavia)
publishDate 2019
url http://hdl.handle.net/20.500.12324/35192
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score 12,131701