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Air Blow Heater

No.90 Heat test of bearing

[ Problem Point ] Managing the heat-resistant temperature of grease, it came to carry out a quality assessment and there was nothing. [ ⇒Kaizen Point ] It heated from room temperature to 550℃ with the Air blow heater. The quality ...

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3-6.Importance of dehydration

Energy for evaporating the water 1kg of 20 ℃ is 2454kJ. 1kW/h is 3600kJ so…. 2454kJ is the working time and energy consumption of the same amount running 40 minutes of 1kW motor. Or, the halogen heater 5kw 85% efficiency ...

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3-5.Balance of the process

When dry quickly at high speed wet material, deviation of the moisture content and temperature of the material inside will increase. As a result, the critical moisture content is increased, it may cause cracks. When it comes to the state ...

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3-4.Five patterns of the drying curve

As for the Drying characteristic curve of the Decreasing drying rate period, five patterns appear with the characteristic of material. The type of material The composition of material The shape of material The possession state of water A-Type A-type is ...

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3-3.Heat balance equation of the drying

The heat balance is the sum of 4 types heat、which is entering heat, exiting heat, generation of heat, and endothermic. By the law of conservation of energy, the quantity of these (Quantity of heat change of the system) = (Quantity ...

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3-2.Evaporation of water

In order to move water vapor becomes water evaporates, the water vapor pressure difference is required between the air and the convection layer and the surface of the material. Water vapor of the material surface so that the saturated pressure ...

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3-1.Heat transfer and Mass transfer

In the classification of thermodynamics, a dry process is a “The open system.” Dryness is “evaporating and separating a liquid from a solid.” Heat and pressure are operated, water is evaporated and it moves. The height of heat is the ...

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2-11.Dew point and Dew point meter

1.Dew point The dew point is the temperature from which condensation begins, when the air containing vapor is cooled. It is also referred to as the dew point temperature. Unit is used to evaluate the K or Kelvin degrees Celsius ...

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2-10.The Psychrometric charts

Psychrometric charts A psychrometric chart for sea-level elevation Terminology A psychrometric chart is a graph of the thermodynamic parameters of moist air at a constant pressure, often equated to an elevation relative to sea level. The ASHRAE-style psychrometric chart, shown ...

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2-8.The principle of the Psychrometer

The principle of the Psychrometer - Science of the drying

If alcoholic disinfection is carried out before injecting, when alcohol evaporates, he will have a cold feeling to because heat is taken. In order for a liquid to turn into gas, energy is required and this energy is called evaporation ...

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2-7.Psychrometer and Hygrometer

2-7-1.Spirits of Dry and Wet Líu Ān (Chinese: 劉安, c.179 – 122 BC) was a Chinese king and advisor to his nephew, Emperor Wu of Han (武帝). The old days of more than 2000 years from now, Concept of humidity ...

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2-5.Absolute humidity

Absolute humidity Generally, if it is only called “Humidity”, “Relative Humidity =RH” will be pointed out, but it is convenient to use the absolute humidity from which a value does not change in a design or control of a drier ...

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2-4.Relative humidity RH

Relative humidity RH Relative humidity is the ratio of the partial pressure of water vapor in an air-water mixture to the saturated vapor pressure of water at a prescribed temperature. The relative humidity of air depends on temperature and the ...

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2-3.Ask for saturation water vapor pressure

The saturation water vapor amount is the representation of g in the mass of water vapor that can be present in the space of 1m3. Absolute humidity volume, saturation water vapor density is also known as, aka. Saturation water vapor ...

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2-1.What is the humidity?

The Chapter 1 focused on moisture inside material. The Chapter 2 focuses on the moisture emitted in the form of vapor into the air. Definition of the humidity Of humidity, it is a representation of a number the wetness in ...

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1-9.How to expressions the constant drying period

Constant drying period is the mass of the water which evaporates per unit time and unit surface area. The unit is kg/s㎡. Constant drying rate Jc is expressed by the following equation. kH: Mass transfer coefficient Hw: Saturated absolute humidity ...

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