intenal lubricant viscosity is one of the most important parameters of oil

Viscosity of oil is the most important parameter, which determines the sliding bearing oil film bearing capacity, the friction
power and the sealing capability of the sealing surface. Carrying capacity of high-viscosity lubricants large, easy to maintain
liquid lubrication, but its flow resistance, increasing the Plastic impact modifier  power and start the compressor friction resistance. Conversely, a low
viscosity lubricating oil flow resistance is small, less heat generated by friction, it is difficult to form oil film seal is poor.
Mixed with the working fluid and the working fluid is mixed well, the free flow of oil in the system, a smooth return to the
compressor, intenal lubricant to ensure the  Calcium stearate normal lubrication of the compressor. Instead, the lubricating oil in the system will

produce stratification, flow resistance is increased in the cycle, the heat transfer to weaken, resulting in insufficient oil
return to the compressor, intenal lubricant properties and thus the reliability of the compressor adverse consequences.
When the cloud point under given conditions, the temperature of the lubricating oil falls below a certain value, the oil begins to
precipitate in the wax, into a turbid state, this is Titanium dioxide rutile called the cloud point temperature of the lubricating oil. Oil cloud point
should be less than the minimum refrigerant evaporation temperature, otherwise precipitated paraffin clog the throttle, or weaken
the effect of the evaporator heat. Even clogged's tube evaporator channels. The maximum temperature in the freezing point of a
given condition, the lubricating oil at the start completely lost its flowability of gravity referred to the freezing point. Easy
come, the freezing point should be as low as possible.