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.

R23 Refrigerant Gas 8KG (17.6LBS),HFC Refrigerants

Description

Introduction:

R23 refrigerant also called fluoroform, Trifluoromethane, chemical formula CHF3. Because R-23 belongs to HFC substances (non-ODS substances Ozone-depleting Substances)-it does not destroy the ozone layer at all. It is currently an environmentally friendly refrigerant recognized and recommended by most countries. It is also the current mainstream ecologically friendly refrigerant and is widely used. It is added during the initial installation and maintenance of new refrigeration equipment (ultra-low temperature, cryogenic).

Specification:

Name	Trifluoromethane
Model	R-23, HFC-23
Classification	HFC Refrigerant
Formula	CHF3
Cas No.	75-46-7
Replacement for	Mainly R-13 and R-503

Application:

R23(HFC-23) is a high pressure liquefied gas, which was usually used as a refrigerant to substitute CFC-13. And it is also the ideal substitute for Halon with the quality of cleanness, low toxicity, and the excellent effect to fight fire.

R23 is used for very low temperature refrigeration ranging from -40°C to -80°C. Due to be banned across Europe due to very high GWP (except in medical applications).