Low-temperature desiccant-based food drying system with airflow and temperature control

Nagaya, Kosuke; Liu, Ying; Jin, Zhehong; Fukumuro, Masahiro; Ando, Yumiko; Akaishi, A.

doi:10.1016/j.jfoodeng.2005.03.051

Cited by 76 publications

(27 citation statements)

References 7 publications

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“…Air dehumidification by adsorbent such as silica, alumina, pillared clay, and rice husk, is an option to enhance the paddy drying efficiency as well as product quality (Witinantakit et al, 2006;Nagaya et al, 2006;Alikhan et al, 1992;Revila et al, 2006;Djaeni et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Paddy Drying in Mixed Adsorption Dryer With Zeolite: Drying Rate and Time Estimation

Djaeni

Ayuningtyas

Asiah

et al. 2013

Reaktor

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Section: Introductionmentioning

confidence: 99%

Paddy Drying in Mixed Adsorption Dryer With Zeolite: Drying Rate and Time Estimation

Djaeni

Ayuningtyas

Asiah

et al. 2013

Reaktor

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“…Moreover, in carrageenan the product whiteness and gel strength can be retained within industrial standard food application Djaeni et al 2013). These positive results are comparable with controlable adsorption dryer for cabbage, egg plants, and carrot, performed by Nagaya et al (2006) (Nagaya et al 2006). So, the dryer with zeolite can compete with the other low temperature methods (freeze and adsorption dryer) (Ratti 2001).…”

Section: Drying Time and Prodcut Quality Aspectsmentioning

confidence: 77%

Enhancement of Energy Efficiency and Food Product Quality Using Adsorption Dryer with Zeolite

Djaeni

Sasongko

Boxtel

2013

Int. J. Renew. Energy Dev.

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Drying is a basic operation in wood, food, pharmaceutical and chemical industry. Currently, several drying methods are often not efficient in terms of energy consumption (energy efficiency of 20-60%) and have an impact on product quality degradation due to the introduction of operational temperature upper 80oC. This work discusses the development of adsorption drying with zeolite to improve the energy efficiency as well as product quality. In this process, air as drying medium is dehumidified by zeolite. As a result humidity of air can be reduced up to 0.1 ppm. So, for heat sensitive products, the drying process can be performed in low or medium temperature with high driving force. The study has been conducted in three steps: designing the dryer, performing laboratory scale equipment (tray, spray, and fluidised bed dryers with zeolite), and evaluating the dryer performance based on energy efficiency and product quality. Results showed that the energy efficiency of drying process is 15-20% higher than that of conventional dryer. In additon, the dryer can speed up drying time as well as retaining product quality.

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“…On the other hand, higher bed diameter ratio caused greater air humidity drop. Dehumidifiers were applied in drying due to many benefits such as reducing drying time and retaining product qualities [5,6].…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of air characteristics during dehumidification in the multilayer desiccant bed column system

2018

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Abstract. The gold of this research is to investigate air characteristics during dehumidification process using the multilayer desiccant bed. Silica gel packing in the multilayer column was used as a desiccant material. Airflow direction in the column was designed in a zigzag path passing each desiccant layer. The changes in temperature and relative humidity of exit air were recorded after dehumidification at different airflow rates of 18, 36, and 72 m 3 /h. In the desiccant regeneration process, moisture in silica gel was removed by 85C of hot air at varied airflow rates. The characteristics of exit air after regeneration were also monitored. The result revealed that air humidity ratio was significantly decreased using multilayer desiccant bed column. The highest rates of air dehumidification and desiccant regeneration were observed in the first 5 min operation. The highest air dehumidification rate was 12.82 g/min at the airflow rate of 72 m 3 /h and the highest regeneration rate of desiccant was 6.70 g/min at the airflow rate of 72 m 3 /h. In addition, the dual column of multilayer desiccant bed can be successfully applied to cyclic operation of dehumidification and regeneration when the cycle time were 5 min and airflow rate 36 and 72 m 3 /h.

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Low-temperature desiccant-based food drying system with airflow and temperature control

Cited by 76 publications

References 7 publications

Paddy Drying in Mixed Adsorption Dryer With Zeolite: Drying Rate and Time Estimation

Paddy Drying in Mixed Adsorption Dryer With Zeolite: Drying Rate and Time Estimation

Enhancement of Energy Efficiency and Food Product Quality Using Adsorption Dryer with Zeolite

Experimental investigation of air characteristics during dehumidification in the multilayer desiccant bed column system

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