Knowledge

Common Faults Of Screw Compressors

Abnormal Compression Ratio: Compression ratio is a familiar concept to those knowledgeable about compressor performance. The difference between screw compressors and piston compres

Oil Differential Pressure Controller Principle And Common Alarm Causes

The oil pressure differential controller functions by accurately measuring the difference between the lubricating oil pressure and the suction pressure of the refrigeration compres

Core Precautions for Using R404A in Piston Refrigeration Compressors

R404A is used in piston refrigeration compressors and requires POE oil, corrosion-resistant seals, high pressure control, deep vacuum, and liquid filling. Operators must wear prote

Key Differences in Applications Between R22 and R134a

R22 is an ozone-depleting refrigerant being phased out, mainly used in traditional air conditioners and chillers with mineral oil. R134a, an ozone-friendly but high-GWP alternative

Installation Precautions And Fault Diagnosis Of Thermal Expansion Valve

Small cold storage typically has a capacity of less than 100 tons. The refrigerant used in the compressor is usually R22. Low-temperature cold storage typically uses semi-hermetic

Three Common Oil Return Methods For Refrigeration Units

Ejector Oil Return Technology; Direct Oil Return Technology;Gravity Oil Return.

What Is A Refrigeration Compressor

The refrigeration compressor is one of the key components of the vapor compression refrigeration system.

Common Problems And Failures Of Cold Storage Equipment

Regularly check and confirm that the power supply voltage meets the requirements. The voltage should be 380V ± 10% (three-phase, four-wire). When the cold storage equipment is not

Common protection devices for refrigeration systems

Accidents in refrigeration systems may include: liquid shock, excessive exhaust pressure, insufficient lubricating oil supply, freezing of refrigerant in the evaporator, overload o

Pressure And Temperature Of Evaporation And Condensation

Evaporation temperature and evaporation pressure are two important parameters determined based on user needs.The condensing temperature refers to the saturation temperature of the

What is Refrigeration Condensing Unit?

Condensing unit (also called the compressor unit) is the most important part of the entire cold room system. The condensing unit is usually the high-pressure side component of the

Analysis of Causes and Phenomena of Cross-flow in Refrigeration Compressors

Air conditioning compressor cross-flow refers to the formation of a direct gas passage between the suction chamber and the exhaust chamber inside the compressor due to some reason