A CO2 compressor pressurizes carbon dioxide gas for transportation, storage, liquefaction, and process injection. Carbon dioxide is a non-toxic, non-flammable A1 refrigerant with zero ODP and negligible GWP (GWP=1), making it the preferred choice as global regulations phase out high-GWP HFCs. The global CO2 compressor market was valued at USD 2.68 billion in 2025 and is projected to reach USD 3.87 billion by 2030, driven by carbon capture projects, natural refrigerant adoption, and beverage carbonation demand. [reference:0]
Unlike air compressors, CO2 compressors must handle carbon dioxide's unique properties: a critical point at 31.1°C and 73.8 bar, carbonic acid formation when exposed to moisture, and high standstill pressures in transcritical systems. RAYDAFON addresses these challenges with oil-free reciprocating technology, food-grade 304/316L stainless steel wetted parts, and pressure ratings validated for subcritical, transcritical, and CCS applications.
A CO2 compressor raises carbon dioxide from suction pressure to discharge pressure through mechanical compression. The process varies by application: transcritical systems for refrigeration operate above CO2's critical point (31.1°C, 73.8 bar), while CCS systems compress CO2 to supercritical state for pipeline transport and geological injection.
Used in cascade refrigeration systems where CO2 operates below its critical point. Discharge pressures typically range from 20 to 51 bar, with evaporating temperatures down to -50°C. Suitable for cold storage, supermarket refrigeration, and industrial freezing. [reference:1]
For warm-climate refrigeration and heat pumps where CO2 operates above its critical point. High-side pressures reach 120-130 bar, with standstill pressures up to 150 bar. Transcritical booster systems with parallel compression cut energy use in warm climates. [reference:2][reference:3]
Carbon capture and storage requires multi-stage compression to supercritical conditions for pipeline transport (typically 150 bar at 15°C) and wellhead injection. IHI recently demonstrated 20 MPaG (200 bar) supercritical CO2 compression for deep saline aquifer injection. [reference:4][reference:5]
Breweries and beverage producers recover CO2 from fermentation and recompress it for carbonation and packaging. A typical brewery generates approximately 4 kg of CO2 per hectoliter of beer but needs only 3 kg for carbonation, creating a net recovery opportunity. [reference:6]
| Parameter | Specification |
|---|---|
| Working Pressure Range | 10 to 450 bar (application-specific) |
| Compressor Type | Oil-free reciprocating / screw |
| System Configuration | Subcritical / Transcritical / Booster |
| Wetted Material | 304 stainless steel (standard); 316L (optional) |
| Piping Material | Stainless steel throughout CO2 circuit |
| Safety Classification | ASHRAE 34 A1 — no identified toxicity below 400 ppm[reference:7] |
| Concentration Limit | 40,000 ppm v/v (ASHRAE 34 concentration limit)[reference:8] |
| Flow Capacity | Customizable (0.05-22 m³/min per configuration) |
| Inlet/Outlet Pressure | Customizable per application |
| Cooling Method | Air-cooled / Water-cooled |
| Certifications | CE, ISO 9001 |
CO2 is used as a natural refrigerant in transcritical booster systems for cold storage, supermarkets, and food processing. With the EU F-Gas Regulation tightening HFC supply, CO2 systems cut freezer energy consumption by up to 25.4% compared to R404A units. [reference:9]
Carbon dioxide creates carbonation in beverages by dissolving into liquid under controlled pressure. Breweries recover CO2 from fermentation and recompress it for carbonation and packaging. Oil-free compression is mandatory to maintain food-grade purity. [reference:10]
CCS projects worldwide — including Thailand's Arthit field (1 MtCO₂/year), the UK's Net Zero Teesside (2 MtCO₂/year), and Yara's Sluiskil facility (800,000 tCO₂/year) — deploy CO2 compressors for capture and reinjection into geological formations. [reference:11][reference:12]
Liquid CO2 is expanded to produce dry ice snow and pellets for blast cleaning, food preservation, and cold chain logistics. In laser cutting, CO2 assist gas cools the cutting zone and blows away molten material for clean edges. [reference:13]
RAYDAFON CO2 compressors eliminate this risk through three design principles:
| Configuration | Typical Pressure Range | Best For |
|---|---|---|
| Oil-free reciprocating (standard) | 10–50 bar | Subcritical refrigeration, beverage carbonation |
| Oil-free reciprocating (high-pressure) | 50–150 bar | Transcritical refrigeration, heat pumps |
| Screw booster | 100–200 bar | Large-scale refrigeration, CO2 recovery |
| Multi-stage (CCS-grade) | 150–450 bar | Carbon capture, pipeline transport, injection |
Pricing depends on configuration, working pressure, flow capacity, and material selection. Share your application parameters and RAYDAFON will respond with a factory-direct quote within 12 hours.
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