2013
DOI: 10.7454/mst.v17i2.1928
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Characteristics of Vacuum Freeze Drying with Utilization of Internal Cooling and Condenser Waste Heat for Sublimation

Abstract: Vacuum freeze drying is an excellent drying method, but it is very energy-intensive because a relatively long drying time is required. This research investigates the utilization of condenser waste heat for sublimation as a way of accelerating the drying rate. In addition, it also investigates the effect of internal cooling combined with vacuum cooling in the pressure reduction process. Jelly fish tentacles were used as the specimen, with different configurations for condenser heat waste and internal cooling va… Show more

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Cited by 2 publications
(1 citation statement)
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“…For food drying, the VFD method is able to maintain the quality of the ingredients in terms of nutritional content, color, taste and others [1] . VFD goes through three stages of the process, namely cooling, evaporation stage 1 and evaporation stage 2 [2]. The VFD process is carried out under operating conditions below the triple point of water (0.01 0 C and 6.11657 mbar), where these conditions cause evaporation of the material by sublimation [3].…”
Section: Introductionmentioning
confidence: 99%
“…For food drying, the VFD method is able to maintain the quality of the ingredients in terms of nutritional content, color, taste and others [1] . VFD goes through three stages of the process, namely cooling, evaporation stage 1 and evaporation stage 2 [2]. The VFD process is carried out under operating conditions below the triple point of water (0.01 0 C and 6.11657 mbar), where these conditions cause evaporation of the material by sublimation [3].…”
Section: Introductionmentioning
confidence: 99%