Refrigeration
Hydrocarbon Refrigeration
Hydrocarbon refrigerants — propane, isobutane, propylene and butane — are used in industrial and process refrigeration where low environmental impact, thermodynamic efficiency and natural refrigerant credentials are priorities. From petrochemical process cooling to industrial refrigeration and low-temperature cascade systems, hydrocarbon refrigerants offer a proven natural alternative across a range of applications.
NEXT Lubricants supports hydrocarbon refrigeration with compressor lubricants developed for propane, isobutane, propylene and butane refrigerant systems.
Compression process
Hydrocarbon Refrigeration — Process, Applications & Compressor Role
Hydrocarbon refrigerants — including propane (R290), isobutane (R600a), propylene (R1270) and butane (R600) — are used in industrial and process refrigeration where natural refrigerants are specified for their thermodynamic efficiency, zero global warming potential and long-term regulatory stability. These refrigerants are miscible with mineral oils and alkylbenzene lubricants, flammable by nature, and require ATEX-classified system designs and Ex-rated equipment — characteristics that distinguish hydrocarbon refrigeration from ammonia and CO₂ systems and directly influence compressor and lubricant selection.
The compressor circulates and compresses hydrocarbon refrigerant vapour through the refrigeration cycle, creating the pressure conditions needed for condensation and heat rejection. Because propane, isobutane and related refrigerants are flammable, compressors in these systems are installed within classified hazardous area zones where seal integrity and lubricant compatibility are directly relevant to the safety of the installation under all operating conditions.
Petrochemical & LPG Processing
Propane and propylene refrigeration is widely used in petrochemical fractionation, LPG handling and gas processing facilities where low-temperature process cooling is required alongside flammable hydrocarbon process streams.
Industrial Refrigeration & Cold Storage
Isobutane and propane are used in industrial refrigeration installations where a low-GWP natural refrigerant is specified, including food processing, beverage production and temperature-controlled storage.
Cascade & Low-Temperature Systems
Hydrocarbon refrigerants are used in cascade configurations alongside other refrigerants to achieve very low evaporating temperatures in industrial and process cooling applications requiring multi-stage refrigeration.
Natural Refrigerant Compliance Projects
Hydrocarbon refrigeration is selected in retrofit and new-build projects where environmental regulation or corporate sustainability targets require a move away from high-GWP synthetic refrigerants toward natural alternatives.
Related Applications
Explore Other Refrigeration Applications
Hydrocarbon refrigeration is one part of a broader refrigeration landscape, with other applications varying by refrigerant, system design and operating profile.
CO₂ Refrigeration
Industrial and commercial refrigeration systems where CO₂ is used as part of the overall system design and operating approach.
Ammonia Refrigeration
Industrial refrigeration systems using ammonia where stable low-temperature operation and continuous cooling are part of the wider application.
Industrial Heat Pumps
Applications where heat is recovered and upgraded for industrial use, often with different system conditions and operating profiles.
HFC & HFO Refrigeration
Refrigeration systems using HFC or HFO refrigerants, with different system and lubricant requirements from natural refrigerant applications.