Why does the oil pressure increase when the temperature of the compressor lubricating oil decreases? ? ? ?
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Why does the oil pressure increase when the temperature of the compressor lubricating oil decreases? ? ? ?
I think from the perspective of the properties of lubricating oil: as the temperature drops, the flow properties of the lubricating oil decrease. This reduced flow capacity can lead to blockages in the pipelines, preventing smooth flow. The outlet of the oil pump then experiences pressure buildup, similar to being under pressure, which results in an increase in pressure at the pump’s outlet. I’m not sure if my explanation is correct
The viscosity of lubricating oil changes with temperature; the higher the oil temperature, the lower the oil pressure, and the lower the oil temperature, the higher the oil pressure
Oil temperature affects the viscosity of the lubricating oil, which in turn influences the pressure; higher viscosity means greater resistance, and thus a relatively higher pressure.
When the lubricant temperature is low, its viscosity increases, its fluidity decreases, and the pressure rises. The stress at night in winter is higher than during the day.
This is due to the viscosity-temperature properties of the lubricating oil, as well as the need to overcome frictional forces against the pipe walls