What type of refrigeration oil should I use for my screw compressor?

Screw compressors typically require POE (Polyol Ester) oils for HFC refrigerants like R134a and R407C, or mineral oils for HCFC systems like R22. The viscosity grade (usually ISO VG 32-68) depends on the compressor manufacturer's specifications. Brands like Bitzer recommend BSE series POE oils, while FUSHENG systems often use mineral oil formulations.

What is the difference between POE and mineral refrigeration oil?

POE (Polyol Ester) oils are synthetic lubricants designed for HFC refrigerants (R134a, R404A, R407C, R410A) and are hygroscopic, requiring careful moisture control. Mineral oils (MO) are petroleum-based, used with CFC and HCFC refrigerants (R22, R502), and are less expensive but incompatible with modern HFC systems. POE oils offer better thermal stability and miscibility with newer refrigerants.

How do I select the right refrigeration oil for a centrifugal chiller?

For centrifugal chillers, select oil based on the OEM specification (e.g., Trane OIL00037, York PureOil S), the refrigerant type (R123 low-pressure or R134a medium-pressure), and the required viscosity grade. Most modern centrifugal chillers use POE oils with ISO VG 32-68. Always verify compatibility with the chiller manufacturer's technical bulletin and ensure the oil meets the required pour point for your operating conditions.

York Refrigeration Oil

York Refrigeration Oils are a range of specialised compressor refrigeration oils manufactured by York for use in York compressors. These oils are manufactured under licence from the York factory to ensure compatibility with and optimise the performance of York compressors. The York Refrigeration Oil range of lubricants reliably supports a wide variety of refrigeration systems through their excellent lubricating properties, broad compatibility and outstanding thermal stability.

Case Details

Key Properties of York Refrigeration Oil:
1.Excellent Lubrication Performance:Providing excellent lubrication, reducing friction and wear and extending compressor life.

2.Broad compatibility:Compatible with a wide range of refrigerants, ensuring efficient operation in different systems.

3.Excellent thermal stability:Excellent performance at high temperatures, not easy to decompose, maintaining long-term stable performance.

4.Good solubility:Able to effectively dissolve moisture and other contaminants, keeping the system clean and running efficiently.

5.Low volatility:Reducing evaporation loss of oil, reducing maintenance costs.

Main Types of York Refrigeration Oil:
1.Mineral Oil (MO):
Characteristics: Refined from petroleum, low cost.
Scope of application: Usually used with conventional refrigerants such as R22. Due to its chemical properties, it is not suitable for use with HFC type environmental refrigerants (e.g. R404A, R134a).

2.Alkylbenzene Lubricant (AB):
Characteristics: Synthetic oil with good solubility and stability, suitable for a wide range of refrigerants.
Application: Widely used with HCFC refrigerants (e.g. R22) as well as some HFC refrigerants.

3.Polyester Oil (POE):
Characteristics: Synthetic oil with excellent solubility and hygroscopicity, able to dissolve water and other contaminants very well.
Scope of application: Mainly used with HFC type environmental protection refrigerants (such as R404A, R134a, R507). Due to its strong moisture absorption, special attention should be paid to moisture protection when storing and using.

4.Polyolefin oil (Polyalkylene Glycol, PAG):
Characteristics: Synthetic oil with good thermal and chemical stability, suitable for high temperature environment.
Scope of application: Mainly used in electric vehicle air-conditioning systems and some specific HFC refrigerant applications.

York refrigeration oil has the following models:

1. York S refrigeration oil: Belongs to POE polyol ester synthetic refrigeration oil, No. 011-00922-000, mainly used in York's R22 refrigerant YS screw unit.

2. York K Refrigeration Oil: Belongs to POE polyol ester synthetic refrigeration oil, No. 011-00533-000, mainly used in York's R134A refrigerant YK centrifugal units.

3. York L Refrigeration Oil: Belongs to POE polyol ester synthetic refrigeration oil, No. 011-00592-000, mainly used in York's R22 refrigerant YCWS screw units and York's R134A refrigerant YEWS screw units.

4. York H Refrigeration Oil: Belongs to POE polyol ester synthetic refrigeration oil, No. 011-00549-000, mainly used in York's R134A refrigerant YR units.

What is Refrigerant?

Trane Refrigeration Oil

DIVERSITY OF EXPLORATION

OUTDOOR SCENE

However, those with sealed components, including motors, controllers, and connectors, can also be operated outdoors. Performance IC forklifts tend to be utilized in heavy-duty applications, such as brick and lumber yards, where larger capacity and performance is required to move the heavy loads.