Evaluation of Energy Consumption of Potato Slices Drying Using Vacuum-Infrared Method
Journal Title: International journal of Advanced Biological and Biomedical Research - Year 2014, Vol 2, Issue 10
Abstract
Objective: The main objective pursued in this paper is to investigate the energy consumption for drying of potato slices using vacuum-infrared drying method. Methods: Drying of potato slices with the thicknesses of 1, 2 and 3 mm were conducted at vacuum levels of zero (without vacuum), 20, 80 and 140 mm [Hg], infrared radiation at power levels of 100, 150 and 200 W in the three repetition. Results: The results show that with the slice thickness decreases, acts of vacuum and increasing lamp power, energy consumption be reduced. Maximum of energy consumption occurred in a vacuum of 140 mm Hg, but in general it can be stated that by applying vacuum, energy consumption is reduced due to the shortening of the drying time. Data analysis showed that use of vacuum in conjunction with infrared radiation drying increased energy consumption in comparison to merely infrared drying. In the combined vacuum-infrared process, drying time and consequently energy consumption decreased in comparison to the merely infrared drying. The maximum thermal utilization efficiency (31.01%) and minimum energy requirements (5.3 kWh/kg H2O) was calculated for drying of potato slices computed at infrared power of 150 W without vacuum at thickness of 1 mm. The minimum thermal utilization efficiency (2.13%) and maximum energy requirements (185.14 kWh/kg H2O) for drying of potato slices was achieved at infrared radiation power of 100 W with vacuum level of 80 mm [Hg] at thickness of 2 mm.
Authors and Affiliations
Negar Hafezi| Msc. Student, Department of Mechanics of Agricultural Machinery and Mechanization, Faculty of Agriculture, Shahid Chamran University, Ahvaz, Iran, Mohammad Javad Sheikhdavoodi| Associate Professor, Department of Mechanics of Agricultural Machinery and Mechanization, Faculty of Agriculture, Shahid Chamran University, Ahvaz, Iran, Seyed Majid Sajadiye| Associate Professor, Department of Mechanics of Agricultural Machinery and Mechanization, Faculty of Agriculture, Shahid Chamran University, Ahvaz, Iran, Mohammad Esmail Khorasani Ferdavani| Associate Professor, Department of Mechanics of Agricultural Machinery and Mechanization, Faculty of Agriculture, Shahid Chamran University, Ahvaz, Iran
Keywords
Related Articles
- EP ID EP13383
- DOI -
- Views 280
- Downloads 15
Survey the Effect of Cover Crops in Reduced Sunflower Weed Biomass
In order to evaluate the effects of cover crops on reduced weed biomass in hybrid sunflower an experiment was carried in the research stations, Natural Resources Medicinal Plants (Samian_Ardabile) with 3 replicates in...
Effect of drought and salinity tensions on germination and seedling growth of Common Yarrow (Achillea millefolium L.) in laboratory conditions
A major problem of arid and semi-arid regions is environmental stresses like salinity and drought. To study the effect of Artichoke germination under different levels of salinity and drought, two separate experiments w...
Chemical and microbiological analysis of surface and ground drinking water quality
Drinking water has received considerable attention recently. However, misuse and mismanagement have resulted in a rapid and widespread decline in source-water quality and supply. Water quality guidelines can be used to...
A short preliminary experimental study on teratogenic effect of methenamine in embryonic model
Methenamine salts have been traditionally used in the veterinary and human medicine, but its use is sometimes associated with some side effects. Toxicopathological effects of methenamine salt have always been a major c...
Cerebellum and Reelin under chronic treadmill exercise conditions in male rats
Reelin is an extracellular matrix neuroprotein which plays important roles during development and maturation of cerebellum. In the postnatal cerebellum, Reelin is synthesized by cerebellar granule cells and secreted to...