scholarly journals Modifikasi Oven Biasa Menjadi Oven Vakuml

2020 ◽  
Vol 12 (2) ◽  
pp. 95-106
Author(s):  
Subandi Subandi
Keyword(s):  
High Temperature ◽  
Boiling Point ◽  
Atmospheric Conditions ◽  
Vacuum Oven ◽  
Drying Time ◽  
Food Ingredients ◽  
Suction Pump ◽  
Speed Up ◽  
Working Principle ◽  
High Temperature Drying

The limited quantity and types of facilities for practicum, independent business projects and research, both lecturer and student research, is a problem that often arises and requires solutions to overcome it, one way to overcome the problem of limitations in types of practicum facilities is to modify existing equipment so that it can be done. used for other functions in accordance with the demands of the development of student and lecturer research studies. Modification of an ordinary oven into a vacuum oven is a set of drying ovens that are coupled with a suction pump and equipped with a vacuum gauge to measure the level of vacuum. A vacuum oven is a drying device with a low temperature, with the working principle in a vacuum that the boiling point of moisture is lower than the boiling point in atmospheric conditions so as to speed up the drying time and reduce the amount of damaged nutrients in the dried material due to drying. This drying method is suitable for materials that have high temperature sensitivity or are volatile due to their short drying time, one of which is food ingredients. At high temperature drying, the vitamin content in food is easily degraded and damaged. The modified vacuum oven can be used to dry materials from the types of leaves, fruit and tubers that were thinned using a temperature of 60°C, a vacuum level of -0.5 atm for 2 hours.

scholarly journals Effects of knife-incising and longitudinal kerfing pretreatments on high-temperature drying of red pine and pitch pine timbers

BioResources ◽  
2021 ◽  
Vol 16 (4) ◽  
pp. 8184-8196
Author(s):  
Chang Jin Lee ◽  
Chang-Deuk Eom
Keyword(s):  
High Temperature ◽  
Cross Sections ◽  
Red Pine ◽  
Drying Time ◽  
The Third ◽  
Commercial Use ◽  
As Species ◽  
Pitch Pine ◽  
Species Type ◽  
High Temperature Drying

Effects of knife-incising and longitudinal kerfing pretreatments were analyzed relative to the high-temperature drying of red pine and pitch pine timbers with cross-sections less than 15 cm. Specimens were prepared as round and square timbers with thicknesses of 9, 12, and 15 cm. They were divided into four groups: control, longitudinal kerf, knife-incised, and a combination of knife-incised and longitudinal kerf. Some results from this study, such as commercial availability and application methods of drying schedules, have immense commercial importance. The incising and kerfing treatment can be used not only to improve drying quality but also as a tool for deriving an optimal drying schedule. The kerfing treatment noticeably reduced the surface checks in square timber. However, the incising treatment caused a phenomenon in which the incisions connect to each other and develop into surface checks. The wood characteristics, such as species, type, thickness, and initial MC, had more influence on determining the drying defects than the pretreatments. For the commercial use of the drying schedule used in this study, it can be useful to determine the appropriate drying time in the third step according to the species, thickness, and shape.

Moisture Analysis of Freeze-Dehydrated Cottage Cheese

1967 ◽  
Vol 50 (6) ◽  
pp. 1279-1283
Author(s):  
James L Fowler ◽  
Charles H Coleman
Keyword(s):  
High Capacity ◽  
Cottage Cheese ◽  
Oven Method ◽  
Vacuum Oven ◽  
Drying Time ◽  
Alternative Method ◽  
Moisture Analysis ◽  
Government Laboratories

Abstract A large number of samples of dehydrated cottage cheese are received by government laboratories for moisture analysis, and the apparatus for performing the test by the prescribed method lacks adequate capacity to handle them. Therefore, an experiment was designed to test whether analysis by an alternative method making use of high capacity apparatus would give comparable results. It was concluded that the mechanical convection air oven, 100—102°C, 16—18 hr drying time, did not give results comparable to the specified vacuum oven method

High temperature drying characteristics of crushed rice for animal feed

2014 ◽  
Vol 7 (3) ◽  
pp. 133-138 ◽  
Author(s):  
Fumina Tanaka ◽  
Kotaro Yamashita ◽  
Ai Tanaka ◽  
Fumihiko Tanaka ◽  
Daisuke Hamanaka ◽  
...  
Keyword(s):  
High Temperature ◽  
Animal Feed ◽  
Drying Characteristics ◽  
High Temperature Drying

CHANGES IN MOISTURE, TEMPERATURE, AND QUALITY OF CORN SEED DURING HIGH-TEMPERATURE DRYING

1989 ◽  
Vol 69 (3) ◽  
pp. 749-761 ◽  
Author(s):  
ULRICH HERTER ◽  
JOSEPH S. BURRIS
Keyword(s):  
Seed Quality ◽  
Inbred Lines ◽  
Drying Time ◽  
Temperature Changes ◽  
Corn Seed ◽  
Seed Corn ◽  
Seed Moisture ◽  
The Relationship ◽  
High Temperature Drying

Mechanical drying has frequently caused injury in corn seed. Changes in seed moisture, temperature, and quality were determined for inbred lines A632, B73 and Mo17 to define the relationship between these variables. Ears harvested at ca. 48 and 38% seed moisture could be dried at 50 °C for 4–15 h and 18–24 h, respectively, before germination started to decline linearly with prolonged 50 °C drying. Drying time at 50 °C, seed moisture, or embryo moisture after 50 °C drying could be used equally well for prediction of seed quality. Seedling dry weights often declined even when seed was dried for only a few hours at 50 °C. Temperature measurements within seeds indicated that evaporation cooled the seed no more than 5 °C. Drying susceptibility of seed parents varied greatly between years.Key words: Moisture, temperature changes, seed corn, drying

scholarly journals Friction surface modifiers of carbon-containing material for high-temperature operation

2021 ◽  
Vol 2124 (1) ◽  
pp. 012013
Author(s):  
M N Roshchin
Keyword(s):  
Stainless Steel ◽  
High Temperature ◽  
Friction Coefficient ◽  
Friction Surface ◽  
Atmospheric Conditions ◽  
Temperature Range ◽  
Tribological Tests ◽  
Surface Modifiers ◽  
Antifriction Properties ◽  
High Temperature Operation

Abstract The results of high-temperature tribological tests of carbon-containing material in friction on heat-resistant stainless steel 40X13 in the temperature range from 20 to 700 °C under atmospheric conditions are presented. Friction surface modifiers “Argolon-2D” material improve antifriction properties and decrease friction coefficient value. Friction coefficient when using Ni-Se-PTFE modifier at load of 0.67 MPa and speed of 0.16 m/s is less by 5% than at speed of 0.05 m/s, and at speed of 0.25 m/s friction coefficient is less by 13% than at speed of 0.05 m/s. At 500 °C and a load of 0.67 MPa the friction coefficient when using Ni-Se-PTFE modifier is 30% higher than when using InSb-PTFE modifier, and the friction coefficient when using CuO-PTFE modifier is 1.2 times higher than when using InSb-PTFE modifier.

DRYINC RATES DURING HIGH TEMPERATURE DRYING OF YELLOW POPLAR

1988 ◽  
Vol 6 (1) ◽  
pp. 95-112 ◽  
Author(s):  
B.A. Adesanya ◽  
A.K. Nanda ◽  
John N. Beard
Keyword(s):  
High Temperature ◽  
Yellow Poplar ◽  
High Temperature Drying

Enrichment of pasta with faba bean does not impact glycemic or insulin response but can enhance satiety feeling and digestive comfort when dried at very high temperature

2015 ◽  
Vol 6 (9) ◽  
pp. 2996-3005 ◽  
Author(s):  
Valérie Greffeuille ◽  
Agnès Marsset-Baglieri ◽  
Nicolas Molinari ◽  
Denis Cassan ◽  
Thibault Sutra ◽  
...  
Keyword(s):  
High Temperature ◽  
Faba Bean ◽  
Insulin Response ◽  
Textural Properties ◽  
High Temperature Drying ◽  
Very High

High temperature drying strengthens the textural properties of legume pasta, reduces appetite and digestive discomfort and does not affect glycemic and insulin indices.

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