Dring Tech J

What is dew point and why are manufacturers pursuing low dew point in the drying field? 1. Dew point temperature: Dew point temperature refers to the temperature at which the air is cooled to saturation under the condition that the water vapor content and air pressure do not change. Figuratively speaking, the temperature at which the water vapor in the air turns into dew is called the dew point temperature. 2. Absolute humidity : ①The pressure of water vapor contained in the air is called the absolute humidity of the air. ② The mass of water vapor contained in a unit volume of air is called the absolute humidity of the air. Description: ① The degree of dryness and wetness of the air is related to the amount of water vapor contained in the unit volume of air, at a certain temperature, in a certain volume of air, the greater the water vapor density, the greater the pressure, the smaller the density, the smaller the air pressure. Therefore, the humidity is usually expressed by th...

Wind is the only medium that takes away the moisture in the raw material. The amount of air volume will affect the quality of dehumidification effect. The air volume is too large and the wind speed is too fast, resulting in too high return air temperature, resulting in overheating and affecting the stability of the dew point, poor drying effect, and a very large waste of resources in energy consumption. If the air volume is too small, the moisture in the raw material cannot be completely taken away, which affects the drying speed. Only through professional judgment and calculation can we get a most suitable air volume value. Simply from the following aspects, let you understand the calculation of the air volume through what angles. I hope it will be helpful to you when choosing a dryer. 1 &nbsp The type of material 2 &nbsp The output of the...

Before calculating the volume of the barrel, let's give you a science popularization of the density of the material. Due to the different volume conditions of the material, it can be divided into the following three densities: Density (actual density): Density is the mass per unit volume of a material in an absolutely dense state. Apparent density： Also called apparent density, it refers to the mass of the apparent volume per unit of material (including material solid and closed pore volume) under specified conditions. Bulk density： The weight per unit volume of bulk material in the natural accumulation state is called bulk density. So as long as we know the bulk density, we can find out how large the barrel is needed to fit a ton of material. Of course, we can also estimate the bulk density according to the actual density, the bulk density of the general granular material is 0.6 times the actual density, and the bulk density of the bottle flake material is about 0.25 times...

What is your raw material? What is the initial moisture content? What is the residual moisture content? What is the required output? Initial moisture content: the moisture content of the raw material before it is dried. Residual moisture content: the moisture content required to be reached after the raw material is dried. Let’s first understand the concepts of water absorption rate, equilibrium water absorption rate, and saturated water absorption rate. Water absorption: refers to the ability of plastic to absorb water under standard atmospheric pressure. Equilibrium water absorption: the amount of water absorbed by the material when the amount of absorbed water is equal to the amount of volatile water. Saturated water absorption: refers to the maximum absorption. The water absorption of plastic is determined by the number and size of the voids, the way the particles are arranged with each other, whether there are polar groups in the main chain, and the water resist...