Potential for energy cost savings by utilising alternative temperature control strategies for controlled atmosphere stored apples

East, A.R.; Smale, Nicholas; Trujillo, Francisco J.

doi:10.1016/j.ijrefrig.2012.10.028

Cited by 30 publications

(24 citation statements)

References 12 publications

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“…Hence, strict control of constant low temperature is a standard practice to avoid losses during postharvest storage of fresh commodities. However, constant low temperature cooling contributes significantly to the energy use and also to the carbon footprint (East et al, 2013, Liu et al, 2010, Stoessel et al, 2012.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of the spatiotemporal temperature fluctuations inside an apple cool store in response to energy use concerns

Ambaw

Bessemans

Gruyters

et al. 2016

International Journal of Refrigeration

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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. 0Analysis of the spatiotemporal temperature fluctuations inside an apple cool store in response to energy use concerns Alemayehu Ambaw (a, c) , Niels Bessemans (a) , Willem Gruyters (a) , Sunny George Gwanpua (a) , Ann Schenk (b) , Ans De Roeck (b) , Mulugeta A. Delele (a) , Pieter Verboven (a) , Bart M. Nicolai  It has been demonstrated that fan and refrigeration cycling works to save energy. Load shifting of controlled atmosphere stores for saving energy costs seems worthwhile. AbstractEnergy cost concerns have led to question the temperature and air flow regimes in cool store facilities. In this paper, a CFD model of the air flow and temperature dynamics inside an apple fruit Page 1 of 33 1 cool store was developed, validated and used to analyse energy cost saving alternatives. Load shifting was attempted by cycling the temperature set point between 1.2 °C and 0.6 °C following a day/night regime. Discontinuous use of the cooling operation, including 12 h on / 12 h off; 10 h on / 14 h off; and 8 h on / 16 h off were also investigated. The study showed that the air circulation fan is the major source of heat load. Hence, an attempt to reduce energy cost should first deliberate on reducing the fan operation time. The study developed a generic tool to analyse temperature control options inside an apple cool store in response to energy use concerns.

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Section: Introductionmentioning

confidence: 99%

“…Sufficiently cooling the produce to the lowest possible temperature during period of cheap electricity price (off-peak hours) and reducing the cooling operation during high price period (peakhours) can reduce energy cost (East et al, 2013;Koca and Hellickson, 1993;Waelti 1983;Yost, 1984).…”

Section: Introductionmentioning

confidence: 99%

Analysis of the spatiotemporal temperature fluctuations inside an apple cool store in response to energy use concerns

Ambaw

Bessemans

Gruyters

et al. 2016

International Journal of Refrigeration

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“…Como resultado, se encontró errores del 0.0035 y 0.0016% al punto fijado de referencia para la concentración de CO2 y O2 respectivamente. East et al (2013) lograron describir un método para disminuir los costos energéticos asociados a la tecnología, mediante la manipulación de la temperatura de almacenamiento, estimaron hasta un 40% de reducción en costos energéticos sin generar un efecto significativo en la calidad de la fruta en estudio (manzana). Existen varias posibilidades de mejora o adaptación de la tecnología para ajustar su uso a determinadas aplicaciones.…”

Section: Mejoras Desarrolladasunclassified

Avances en Tecnología de Atmósferas Controladas y sus Aplicaciones en la Industria. Una Revisión

Vega

Pinto

2017

Inf. tecnol.

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ResumenEste documento describe la historia de la tecnología de atmósferas controladas, sus avances tecnológicos y sus aplicaciones, proporcionando perspectivas de investigaciones en distintos campos de estudio. Para ello se ha desarrollado una revisión de información, sobre los distintos campos donde la tecnología ha sido aplicada y su eficiencia como alternativa de tratamiento. Los estudios relacionados con este campo generados hasta la fecha, están asociados con el efecto que produce la tecnología en las características organolépticas y funcionales de determinadas frutas (aroma, calidad, potencial antioxidante, polifenoles, etc.) y en la automatización de la tecnología (adaptaciones, monitoreo computarizado), así como el efecto en el campo de la electrónica. En la mayoría de los casos la tecnología ha mostrado una mayor eficiencia que en los métodos tradicionales. Se puede concluir que debido a la amplia alternativa de aplicación y la eficiencia de la de la tecnología de atmósferas controladas, se pueden generar estudios adicionales para complementar su desarrollo futuro. Palabras clave: aplicaciones electrónicas; conservación de alimentos; mortalidad de insectos Advances in Controlled Atmosphere Technology and its Industrial Applications. A Review AbstractThis document seeks to describe the history of the technology of controlled atmospheres, its technological advances and applications, providing research perspectives in different fields of study. For this purpose, a review of information has been developed, about the different fields where this technology has been applied and its efficiency as an alternative method. The studies related to this field generated until today are associated with the effect that the technology produces on the organoleptic and functional characteristics of certain fruits (aroma, quality, antirust potential, polyphenols) as well as the automation of the technology (adjustments, computerized monitoring), and their applications in the field of electronics. In most cases the technology has shown higher efficiency than the traditional methods. It is possible to conclude that due to the wide alternatives of applications of the technology, additional studies can be generated to complement its future development.

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“…os impactos da temperatura de armazenagem sobre a conservação pós-colheita de várias cultivares de maçãs têm sido estudados há décadas, e embora a refrigeração de maçãs tenha papel fundamental na conservação da qualidade e prevenção de perdas da produção por deterioração, ela contribui significativamente para os custos da produção (BRowN, 2011;EASt et al, 2013). Adicionalmente, a refrigeração resulta em aumento da emissão de carbono, quando não se aplica fontes renováveis de energia (LIU et al, 2010).…”

Section: Introductionunclassified

“…o aumento da temperatura de armazenagem de maçãs armazenadas sob AC e tratadas com 1-MCP, pode proporcionar redução no consumo de energia, bem como na incidência de escurecimento interno da polpa (dano por frio), além de preservar os demais atributos de qualidade dos frutos (EASt et al, 2013). de acordo com Kweon et al (2013), o aumento da temperatura de armazenagem de 0 °C para 2 °C em maçãs 'Fuji' armazenadas por seis meses reduziu a incidência de escurecimento interno da polpa.…”

Section: Introductionunclassified

Potenciais Benefícios Do Aumento Da Temperatura De Armazenagem Em Atmosfera Controlada De Maçãs ‘Gala’ Tratadas Com 1-MCP

Mazzurana

Argenta²,

Amarante

et al. 2016

Rev. Bras. Frutic.

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RESUMO -o armazenamento refrigerado pode induzir o desenvolvimento de danos por frio (caracterizado pelo escurecimento de polpa) em maçãs de algumas cultivares, mesmo quando mantidas em temperatura superior ao ponto de congelamento. o presente estudo avaliou o aumento da temperatura de armazenagem de maçãs clones de 'Gala' sob atmosfera controlada (AC), tratadas com 1-metilciclopropeno (1-MCP), como método para redução do desenvolvimento de escurecimento da polpa e do consumo de energia durante o armazenamento. Experimentos foram conduzidos em 2011, com maçãs produzidas em Fraiburgo (armazenadas em câmaras experimentais a -0,3 e 1,2 °C, e em câmaras comerciais a 0,7 e 2 °C) e em São Joaquim (armazenadas em câmaras comerciais a 0,8; 1,4 e 1,9 °C). Frutos de todos os tratamentos foram mantidos sob AC (1,8±0,2 kPa de o 2 e 2,0±0,2 kPa de Co 2 /UR de 91±4%), sendo que metade dos frutos de cada temperatura de armazenamento foi tratada com 1-MCP. os frutos foram analisados após o armazenamento em AC quanto à firmeza da polpa e incidência de escurecimento da polpa, rachaduras e podridões. De maneira geral, maçãs armazenadas em temperaturas mais elevadas mantiveram melhor firmeza da polpa e apresentaram menor incidência de escurecimento da polpa rachaduras e podridões, quando não tratadas com 1-MCP. O tratamento com 1-MCP retardou a perda de firmeza de polpa e reduziu a ocorrência de escurecimento de polpa e rachaduras. O aumento da temperatura de armazenagem em câmaras comerciais de AC em Fraiburgo, de 0,7 °C para 2,0 °C , resultou em economia no consumo de energia em aproximadamente 21% para ventilação do ar da câmara e 50% para refrigeração. Termos para indexação: Malus domestica Borkh, temperatura, etileno, dano por frio, distúrbio fisiológico. POTENTIAL BENEFITS OF TEMPERATURE INCREASE DURING STORAGE UNDER CONTROLLED ATMOSPhERE OF 'GALA' APPLES TREATED wITh 1-MCPABSTRACT -Cold storage can induce the development of chilling injury (characterized by internal browning) in some apple cultivars, even when fruit are kept in temperature above the freezing point. This research evaluated the increment of storage temperature for 'Gala' apples under controlled atmosphere (CA) and 1-methylcyclopropene (1-MCP) treatment, as a method to reduce the development of internal browning and energy consumption. Experiments were conducted in 2011, with apples produced in the regions of Fraiburgo (stored in experimental chambers at -0.3 and 1.2 °C, and in commercial chambers at 0.7 and 2 °C) and São Joaquim (stored in commercial chambers at 0.8, 1.4 and 1.9 °C). Fruits of all treatments were kept under CA (1.8±0.2 kPa o 2 and 2.0±0.2 kPa Co 2 /RH of 91±4%), with half of the fruits of each storage temperature being treated with 1-MCP. The fruit were assessed in terms of flesh firmness, and incidence of internal browning, skin cracking and decay. In general, apples stored at higher temperatures had better preservation of flesh firmness, and lower incidence of internal browning, skin cracking and decay, in fruit not treated with 1-MCP. The t...

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Potential for energy cost savings by utilising alternative temperature control strategies for controlled atmosphere stored apples

Cited by 30 publications

References 12 publications

Analysis of the spatiotemporal temperature fluctuations inside an apple cool store in response to energy use concerns

Analysis of the spatiotemporal temperature fluctuations inside an apple cool store in response to energy use concerns

Avances en Tecnología de Atmósferas Controladas y sus Aplicaciones en la Industria. Una Revisión

Potenciais Benefícios Do Aumento Da Temperatura De Armazenagem Em Atmosfera Controlada De Maçãs ‘Gala’ Tratadas Com 1-MCP

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