Ask!! How does the kinematic viscosity of 320 heat transfer fluid change with temperature?

According to the experimental results, at 0, the kinematic viscosity of 320 heat transfer oil is, at 40, the kinematic viscosity is, and at 100, the kinematic viscosity is; It can be seen that the density of 320 heat transfer oil decreases with the increase of temperature. The above is Shandong Encore for your answer, I hope it can help you.

When evaluating the quality of heat transfer fluids, thermal stability tests are indispensable. Generally, the physical and chemical properties (viscosity, path, flash point, residual carbon, colorimetry, composition analysis, etc.) before and after the thermal stability test are analyzed and compared, and the smaller the change in the properties of the heat transfer oil before and after the test, the better. Some of the thermal stability tests are as follows:

Autoclave test: Heated to 350 degrees in a SUS-27 autoclave for 1500 hours. Comparative test of different heating times:

In a closed container, the nitrogen filling pressure is 1kg per cubic centimeter, the temperature is 340 degrees-350 degrees, and the rotation time is different hours).

Cycle test: The oil sample is circulated under nitrogen pressure for a certain period of time, passing through the high temperature zone several times per hour. Corrosivity test of binding materials:

Generally, copper sheets and aluminum sheets are placed in a thermal stability closed test container, and the heat conduction oil and metal materials are taken out after the test to determine the degree of corrosion change of metal materials. China has established a professional standard for heat transfer oil, codenamed SH T0677-1999, which will make the development of heat transfer oil more standardized. A few suggestions:

At present, the general performance of heat transfer oil produced by domestic heat transfer oil manufacturers is worse than that of foreign countries, mainly in thermal stability and short service life. The thermal stability test method has been established, based on other analytical methods (viscosity, path, flash point, carbon residue, colorimetry, composition analysis, etc.), which are combined to form a complete set of standardized heat transfer oil test specifications.

The kinematic viscosity is the ratio of the dynamic viscosity of a fluid to the density of the fluid at the same temperature. The unit is (m2) s. It is denoted by the lowercase letter v.

Note: The unit used to be used is st(s) st(s) and (m2) s The relationship between the rate of advancement is: 1(m2) s=10 4st=10 6cst.

The basic characteristic of the flow is that the liquid flowing is treated as many layers moving parallel to each other, and the velocity of each layer is different, forming a velocity gradient (dv dx).

The kinematic viscosity is the ratio of the dynamic viscosity of a fluid to the density of the fluid at the same temperature.

Newton's law of viscosity states that the shear stress (or viscous frictional stress) between two adjacent fluid layers in a pure shear flow is the normal velocity gradient in which dv dy is the direction of the perpendicular flow. The viscosity is numerically equal to the shear stress on the fluid at a unit velocity gradient. The velocity gradient also indicates the angular deformation rate in the fluid motion, so the viscosity also indicates the ratio relationship between the shear stress and the angular deformation rate.

According to the International System of Units, viscosity is measured in pascals.

Hello, according to the relevant experiments and technical data, the density of 320 heat transfer oil will decrease with the increase of oil temperature in the heating furnace. Especially in the higher temperature range, the temperature change is very large, and the damage of 320 heat transfer oil to the oil in the high temperature environment is relatively large.

Hello, in the synthetic heat transfer oil, take K320 as an example, at 0 is, its kinematic viscosity is, at 40, its kinematic viscosity is, at 100, its kinematic viscosity is. Shandong Encore will answer for you, I hope it can help you.

kinematic viscosity is the ratio of the dynamic viscosity of a fluid to the density of the fluid at the same temperature. The unit is (m2) s.

It is denoted by the lowercase letter v. Note: The units that have been used in the past are st(s) and st(m2) s The relationship between the rate of progress is:

1(m^2)/s=10^4st=10^6cst。(Among them.)"cst"Read as"Clis"The basic characteristic of flow is to think of a liquid flowing as many layers moving parallel to each other, with different velocities forming a velocity gradient (dv dx).

Kinematic viscosity: At the temperature t, the kinematic viscosity is expressed by symbols, in the International System of Units, the unit of kinematic viscosity is m2 s, that is, 10 4st (10 4cm2 s), and in the actual measurement, centiscus is commonly used, (cst) is expressed in centimeters square millimeters per second (i.e. 1cst=1mm2 s). The kinematic viscosity is widely used to determine the viscosity of liquid petroleum products such as jet fuel oil, diesel oil, lubricating oil, dark petroleum products, lubricating oil after use, etc., and the determination of kinematic viscosity adopts the countercurrent method.