Views:7 Author:Site Editor Publish Time: 2021-01-12 Origin:Site
1. What is refrigerant R600a?
The refrigerant R600a is a new type of hydrocarbon refrigerant with excellent performance, which is taken from natural ingredients, does not damage the ozone layer, does not have the greenhouse effect, and is environmentally friendly. Its characteristics are large latent heat of evaporation and strong cooling capacity; good flow performance, low conveying pressure, low power consumption, and slow rise of load temperature. Compatible with various compressor lubricants. (Note: When the content of R600a in the refrigeration system is insufficient, it will cause excessive pressure, abnormal machine noise, and shorten the life of the compressor). It is a colorless gas at room temperature and a colorless and transparent liquid under its own pressure. It is a substitute for R12. It is mainly used as an ultra-low temperature refrigerant, and the refrigeration system composed of R22 is used in an ultra-low temperature refrigeration device at -80～-120℃. It is also used as a foaming agent for foam plastics, as a refrigerant instead of R12.
|Boiling Point ℃||-11.7|
|Density 30° C(kg/m3)||221|
|Critical Temperature (℃)||134.9|
|Critical Pressure (MPa)||3.648|
|Sulfur content ppm by weight||less than 1.0|
|Water content ppm by weight||less than 10|
|Acidity ppm by weight||less than 1.0|
|Evaporation residue||≤ 0.01%|
|Appearance||Colorless and clear|
2. How much is appropriate for the refrigerator with r600a refrigerant?
The normal pressure when adding fluoride to the refrigerator depends on:
a. The type of refrigerant of the refrigerator is about 0.08Mpa for R12, about 0.01Mpa for R134a, and about -0.01Mpa for R600.
b. The ambient temperature is summer or winter, the pressure is higher in summer and lower in winter.
c. At the same time, it is necessary to judge the refrigeration condition of the refrigerator and the heating condition of the return pipe.
3. What is the difference between refrigerant r600a and r134a?
R134a is tetrafluoroethane. This refrigerant has relatively high water solubility, so it is not very good for refrigeration systems. Moreover, under the action of lubricating oil, this refrigerant will produce acid, carbon dioxide or carbon monoxide, which will corrode metals. . Therefore, R134a requires relatively high drying and cleaning of the system.
R600a is isobutane. It is slightly soluble in water and has good compatibility with most metals such as stainless steel, copper, aluminum and carbon steel.
4. Can r600a refrigerant be replaced by R22?
First of all, the types of refrigerating oil corresponding to these two refrigerants are completely different;
secondly, R600a is mostly used in low-temperature refrigeration appliances, such as refrigerators; while R22 is mostly used in air conditioners and other refrigeration appliances. After replacing R600a with R22, the cooling effect of refrigeration appliances will be greatly reduced. If it is necessary to replace it, all the original refrigerating oil in the refrigeration system pipeline should be drained, replaced with mineral oil and then vacuumed again. When filling R22, it is necessary to adjust the appropriate refrigerant filling volume.
5. Does refrigerant R600a pollute the environment?
Among various natural refrigerants, high-purity hydrocarbons, abbreviation: HC, is one of the most important varieties of experts in the world. At present, more than 90% of refrigerators in Germany and Europe use R600a. Other countries in the world have gradually expanded the use of R600a refrigerant. At present, most refrigerators in my country have adopted R600a refrigerant.