What’s a good antifreeze?
Thread Content
We have a process in which the pipeline pressure is 27 kg and the temperature is 510 degrees Celsius; the medium used is natural gas. When measuring the pipeline pressure, an isolation tank is used. What kind of isolation fluid should be filled in this isolation tank?
Antifreeze should be selected based on the ambient temperature and the properties of the process medium; relevant design manuals can be consulted for this purpose.
The antifreeze should be selected based on the ambient temperature and the properties of the process medium
Currently, the antifreeze used in cars on the market is, for the most part, of the ethylene glycol type, that is, ethylene glycol is used as the antifreeze agent. The freezing point of water is 0°C, and when it freezes, the increase in volume can cause damage to the engine’s cooling system. Antifreeze is a liquid with a temperature below freezing point that does not freeze at certain low temperatures; it also has good fluidity, allowing it to carry away excess heat from the engine just like water. Therefore, the proper selection of antifreeze is the first step in the production and research of antifreeze fluids. Antifreezes available on the market include concentrated salt solutions, methanol, ethanol, glycerin, propylene glycol, isopropanol, dimethyl sulfoxide, and others. Concentrated salt solutions can severely corrode water tanks, and they have been phased out. Methanol and ethanol are volatile with low boiling points, which makes it difficult for antifreeze to maintain its freezing point over time. Glycerin has a high density, high viscosity, and poor fluidity, which affects the circulation of the antifreeze and results in reduced cooling efficiency of the engine. Isopropyl alcohol is expensive and highly toxic ； Propylene glycol has good biodegradability, as well as excellent resistance to cavitation heat transfer and corrosion in cast aluminum, but it is relatively expensive ； Dimethyl sulfoxide is suitable for polar antifreeze properties, but it has poor compatibility with rubber. Ethylene glycol overcomes the aforementioned disadvantages of antifreezes, making it a relatively ideal raw material for coolants. Awesome, truly domineering online~
Is antifreeze needed at a temperature of 510 degrees Celsius? I’m not mistaken, am I?