Complaint
1. Viscosity
When the temperature rises, the viscosity of refrigerant oil will decrease; When the temperature drops, the viscosity of refrigerant oil will increase. Therefore, the temperature should be indicated at the same time when the viscosity of freezing oil is indicated. Viscosity can be divided into dynamic viscosity, kinematic viscosity, relative viscosity and so on. The viscosity of refrigerant oil is often expressed by motion viscosity.
2. Freezing point
When the temperature of the frozen oil decreases, the fluidity becomes worse with the increase of viscosity. When the oil is cooled to a certain temperature, the frozen oil will stop flowing. At this time, the temperature is called the freezing point of the frozen oil. The freezing point is lower than the turbidity point Carrier compressor chilled oil
3. Flash point
The freezing oil is heated until the oil vapor produced can flash when it contacts with the flame. At this time, the temperature is called the flash point of the freezing oil. The flash point of the refrigerant oil must be 1530°C higher than the exhaust temperature to avoid burning the refrigerant oil. The flash point of refrigerant oil is usually required to be above 160°C.
4. Ignition point
The ignition point of freezer oil is higher than the flash point. When the flash point is measured, if the ignition point is also needed to be determined, the freezer oil should be continued to be heated until the oil vapor generated can be ignited by the flame in contact and burned no less than 5s. At this time, the temperature is called the ignition point.
5. Turbidity point
When the temperature of freezing oil drops to a certain value, small pieces of paraffin wax begin to precipitate in freezing oil, and flocculent matter appears. At this time, the temperature is called turbidity point.
When solid paraffin is precipitated in the freezer oil, the freezer oil will become cloudy, and block the filter, so that the refrigeration system can not work normally. The turbidity point of the refrigerant oil should be lower than the evaporation temperature of the refrigerant. Otherwise, when the paraffin is precipitated, the paraffin will deposit in the throttle hole of the expansion valve, causing blockage, or deposit on the surface of the evaporator, affecting the heat transfer.
Frequently asked questions
Student: Q1. What's your minimum? A command?
A: Our minutes. The order is an OEM order for 2000 pieces.
Q2. What are your packing conditions?
A: Generally speaking, we pack our goods in neutral white boxes and brown cartons.
Q3. What are your payment terms?
A: T/T 30% as deposit and 70% balance as copy of bill of lading. Telegraphic transfer 30%, letter of credit 70%.
