Heated Air Treatments

2019 ◽  
pp. 149-163 ◽  
Author(s):  
Guy J. Hallman ◽  
John W. Armstrong
Keyword(s):  
Heated Air

Far Infrared Drying Characteristics of Seasoned Red Pepper Sauce Dried by Heated Air

2016 ◽  
Vol 45 (9) ◽  
pp. 1358-1365 ◽  
Author(s):  
Byeong Hyo Cho ◽  
Jung Hyun Lee ◽  
Tae Hwan Kang ◽  
Hee Sook Lee ◽  
Chung Su Han
Keyword(s):  
Far Infrared ◽  
Red Pepper ◽  
Drying Characteristics ◽  
Infrared Drying ◽  
Heated Air ◽  
Pepper Sauce

Using Reconfigurable Tooling and Surface Heating for Incremental Forming of Composite Aircraft Parts

2003 ◽  
Vol 125 (2) ◽  
pp. 333-343 ◽  
Author(s):  
Daniel F. Walczyk ◽  
Jean F. Hosford ◽  
John M. Papazian
Keyword(s):  
Heating Time ◽  
Mold Surface ◽  
Process Automation ◽  
Forming Process ◽  
The Past ◽  
Air Jets ◽  
Heated Air ◽  
Composite Forming ◽  
Computer Controlled ◽  
Flat Lay

The application of composites in the aircraft industry has increased significantly over the past few decades. With traditional composite laminate shaping, each layer is made to conform to the mold surface by hand before subsequent layers are added. This is a very labor- and time-intensive process. There is a great deal of interest in developing an automated process for forming composite parts with compound curvatures. The proposed composite forming process utilizes a computer-controlled, reconfigurable discrete element mold to incrementally form a compound curvature part shape from a flat lay-up, thereby facilitating process automation. An elastomeric interpolating layer, called an interpolator, is placed on top of the hemispherical forming ends of the die elements to prevent dimpling of the composite lay-up. The process employs vacuum to pull a single diaphragm (top), composite, and interpolator into contact with the mold surface. Through an experimental investigation, this new composites forming process with “active” tooling has been successfully demonstrated. Heating of the composite is accomplished by uncontained, forced convection using a matrix of heated air jets mounted above the composite. However, low-powered conduction is shown to be the best heating method in terms of both composite heating time and minimization of through-thickness temperature. Using vacuum to conform both the composite and the interpolator to the mold, and choosing sufficiently stiff diaphragm and interpolator materials, undimpled and wrinkle-free composite parts have been formed in an incremental fashion.

AFLATOXIN CONTENT AND SKIN REMOVAL OF SPANISH PEANUTS AS AFFECTED BY TREATMENTS WITH CHEMICALS, WATER SPRAY, HEATED AIR, AND LIQUID NITROGEN

1976 ◽  
Vol 41 (3) ◽  
pp. 667-671 ◽  
Author(s):  
M. R. PAULSEN ◽  
G. H. BRUSEWlTZ ◽  
B. L CLARY ◽  
G. V. ODELL ◽  
J. POMINSKI
Keyword(s):  
Liquid Nitrogen ◽  
Water Spray ◽  
Aflatoxin Content ◽  
Heated Air ◽  
Skin Removal

Turbulent plumes of heat, moist heat, and carbon dioxide elicit upwind anemotaxis in tsetse flies Glossina morsitans morsitans Westwood (Diptera: Glossinidae)

2002 ◽  
Vol 80 (7) ◽  
pp. 1149-1155 ◽  
Author(s):  
W G Evans ◽  
R H Gooding
Keyword(s):  
Carbon Dioxide ◽  
Wind Tunnel ◽  
Relative Humidity ◽  
Glossina Morsitans Morsitans ◽  
Tsetse Flies ◽  
Glossina Morsitans ◽  
Low Velocity ◽  
Upwind Flight ◽  
Moist Heat ◽  
Heated Air

The roles and interactions of turbulent plumes of heat, moist heat, and carbon dioxide in mediating upwind flight of adult tsetse flies (Glossina morsitans morsitans Westwood) were investigated using a wind tunnel in a constant-environment chamber. Heat fluctuations in the plume that were detected by a thermocouple and displayed as oscilloscope traces allowed direct visualization of the structures of the plumes. Significantly more flies flew upwind when exposed to plumes of (i) carbon dioxide (0.0051% above background) and air (58% relative humidity) compared with air alone; (ii) carbon dioxide and heated air (35% relative humidity and temperature fluctuating up to 0.09°C above background) compared with carbon dioxide and air; and (iii) carbon dioxide and moist (82% relative humidity) heated air (temperature fluctuating up to 0.05°C above background) compared with carbon dioxide and heated air. However, there were no significant differences in upwind flight of flies exposed to plumes of (i) air compared with humidified air (65% relative humidity); (ii) carbon dioxide and heated air compared with heated air alone; and (iii) carbon dioxide and moist heated air compared with moist heated air alone. Recorded temperature fluctuations in heat plumes transported downwind from a tethered steer in a pasture showed patterns similar to those produced in the wind-tunnel plumes. These results suggest that host emissions of carbon dioxide alone and combined heat and moisture carried downwind by low-velocity winds elicit upwind anemotaxis in tsetse flies, which distinguish these emissions from a background of lower atmospheric levels.

SUBSTANTIATION OF OPTIMAL PARAMETERS AND DEVELOPMENT OF HIGH-TEMPERATURE STERILIZATION MODES FOR COMPOTE FROM PEARS IN HEATED AIR FLOW

2020 ◽  
Author(s):  
М.Э. Ахмедов ◽  
А.Ф. Демирова ◽  
Г.И. Касьянов ◽  
Ю.Ф. Росляков ◽  
М.М. Рахманова
Keyword(s):  
Mathematical Model ◽  
High Temperature ◽  
High Speed ◽  
Heat Transfer Fluid ◽  
Initial Product ◽  
Hot Air ◽  
Heated Air ◽  
Sterilization Process ◽  
Thermal Sterilization ◽  
Heat Carriers

Разработаны новые режимы стерилизации компота из груш в стеклотаре СКО 1-82-1000 с использованием высокотемпературных скоростных теплоносителей. Получена математическая модель расчета продолжительности процесса стерилизации в зависимости от параметров теплоносителя. Для получения математической модели использован метод математического планирования эксперимента. Предложен технологический прием ускоренной стерилизации компота из груш в стеклобанке объемом 1 дм3. Разработаны новые режимы тепловой обработки (стерилизации) компота из груш в стеклобанке 1-82-1000 при различных параметрах горячего воздуха и разных начальных температурах продукта, °С: 70, 80, 85 и 90. Наименьшая продолжительность процесса тепловой стерилизации достигнута при скорости теплоносителя 7,5 м/с при начальной температуре продукта 90°С. New modes of sterilization of compote from pears in glass containers of SKO 1-82-1000 using high-temperature high-speed heat carriers have been developed. A mathematical model for calculating the duration of the sterilization process depending on the parameters of the heat carrier is obtained. To obtain a mathematical model, we used the method of mathematical planning of the experiment. A technological method for accelerated sterilization of pear compote in a glass jar with a volume of 1 dm3 is proposed. The research made it possible to develop new modes of heat treatment (sterilization) of compote from pears in a glass jar 1-82-1000 at different parameters of hot air and different initial temperatures of the product, °C: 70, 80, 85 and 90. The shortest duration of the thermal sterilization process is achieved at the heat transfer fluid speed of 7,5 m/s at the initial product temperature of 90°C.

scholarly journals Computational Fluid Dynamics (CFD) simulating heated air from wood burning inside a poultries barn

2016 ◽  
Vol 36 (5) ◽  
pp. 768-778 ◽  
Author(s):  
Paulo C. Coradi ◽  
Márcio A. Martins ◽  
Douglas R. da Costa ◽  
Ricardo B. Vigoderis ◽  
Ilda de F. F. Tinôco
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Heated Air ◽  
Wood Burning ◽  
Computational Fluid Dynamics Cfd

scholarly journals STUDY ON SLUDGE TREATMENT BY THE AEROBIC STABILIZATION PROCESS COMBINES WITH BULKING AGENT AND HEATED AIR SUPPLY

2020 ◽  
Vol 58 (5A) ◽  
pp. 190
Author(s):  
Khoi Diep Ngoc Vo
Keyword(s):  
Urban Areas ◽  
Municipal Wastewater ◽  
Organic Fertilizer ◽  
Treatment Plant ◽  
Bulking Agent ◽  
Municipal Wastewater Treatment ◽  
Treatment Technology ◽  
Sludge Treatment ◽  
Stabilization Process ◽  
Heated Air

The paper presents the results of the evaluation of sludge decomposition ability from a municipal wastewater treatment plant by an aerobic process on the Mishimax device (MK-50). The principle of the process was based on the microorganisms activated by the bulking agent as a bio-carrier to decompose organics composition and increase the evaporation by heating. An average sludge amount of 30 kg/day was added into MK-50, with the moisture of 80.2 – 83.6 %, with the C/N ratio of around 22 - 35. The heated air with 50 oC in temperature was supplied into a rotary bioreactor during the experiment period. After every 30 days of fermentation, the results from three experiments showed that the sludge volume decreased from 83 - 85 %, the stabilization efficiency by dry weight of sludge reached at 32 - 39 %, corresponding to the average decomposition rate is 12 g/kg.day, the evaporation efficiency was more than 95 %. Sludge after stabilization process had the colour of brown-grey, pH of about 6.5 - 7.2, the humus particles with the size of less than 1 mm accounted for over 60 %, the evaluation of product indexes according to nutrients like TOC, T-N meet the standard of 10TCN 526:2002/BNN&PTNT. The stabilized sludge was used for growth plant test and compared to a market organic fertilizer under the same conditions of cultivation and monitoring. The initial results of this study were a basis for research of sludge treatment technology approaches to waste recycling orientation in urban areas in Vietnam.

scholarly journals Design And Analysis of Flat Plate Solar Air Dryer

2020 ◽  
Vol 7 (1) ◽  
pp. 37-40
Author(s):  
Arunprasad S ◽  
Saravanan P ◽  
Arulraj R
Keyword(s):  
Solar Radiation ◽  
Solar Energy ◽  
Flat Plate ◽  
Basic Function ◽  
Insulation Material ◽  
Ansys Software ◽  
Heated Air ◽  
Moisture Extraction ◽  
Air Dryer ◽  
Drying Chamber

Solar dryers are equipment and using solar energy for drying substances, especially food. There are two common types of solar dryers: Direct & indirect. This is a dryer type in which the product to be dried directly absorbs the solar radiation. It is also referred to as a natural convection cabinet dryer, because the solar radiation falls directly on the surface; the product quality is reduced. Heated air from the drying chamber is blown through. A solar dryer's basic function is to heat air with solar energy to a constant temperature, which enables the moisture extraction from crops within a drying chamber. The main objective of flat plate solar air dryer model based on without tray & with tray chamber in Creo parametric software & computational fluid dynamics in Ansys software. Generally, solar air dryer is heat loss is possible, so it’s reduced with help of insulation material (glass wool & polyurethane). To predict the temperature difference in various air flow with insulation material. Furthermore, choose the better insulation material & difference between with & without tray chamber.

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