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RFC4D/4G
RFC
The Large 4-Cylinder RFC Semi-Hermetic Reciprocating Compressor is engineered for heavy-duty commercial and light industrial cooling, balancing high displacement with energy efficiency. Designed for applications with variable cooling demands (e.g., bakery proofing rooms that alternate between cooling and idle periods), it features a reinforced crankshaft made from high-strength alloy steel (42CrMo) and oversized cylinders (120mm bore) that deliver consistent performance under prolonged load. Its semi-hermetic construction allows for in-field repairs—technicians can replace valves, gaskets, or the oil pump without removing the entire unit—reducing downtime for critical cooling systems (e.g., pharmaceutical storage) where even 1 hour of outage risks product loss.
Heavy-Duty Displacement: Boasts a volumetric displacement of 52.8 m³/h at 1750 RPM (a standard industrial motor speed), delivering 18-24 kW of cooling capacity while consuming 5.8-7.2 kW of power. This is 30% more efficient than standard 4-cylinder compressors of the same displacement, thanks to a optimized intake manifold that reduces pressure drop during suction.
Rugged Build: A cast-iron cylinder block with 5μm-thick nickel-plated piston rings resists wear and corrosion, supporting continuous operation for 15,000+ hours before major service. The block also features integrated cooling fins that dissipate heat during operation, reducing reliance on external coolers.
Pressure Stability: Equipped with a high-sensitivity pressure transducer (response time < 0.1 seconds) that triggers capacity modulation when discharge pressure exceeds 2.8 MPa. This prevents system overload—for example, if a condenser fan fails, the compressor automatically reduces capacity by 40% until pressure returns to safe levels.
Refrigerant Flexibility: Compatible with R134a (for medium-temperature applications), R407C (for mixed-temperature systems), and low-GWP R290 (propane, GWP = 3, compliant with EU F-Gas Phasedown and U.S. EPA SNAP rules). A refrigerant filter drier is included to remove moisture and contaminants, protecting the compressor from acid formation.
Medium industrial cold storage (200-500 m³): Stores frozen meats, seafood, or processed foods at -18℃ to -25℃, with capacity to handle daily restocking loads (e.g., 5-10 tons of incoming goods).
Large-scale bakery proofing and cooling chambers: Cools dough from 38℃ (proofing temperature) to 20℃ in 30 minutes, preventing over-fermentation and ensuring consistent bread texture.
Brewery fermentation tank cooling systems: Maintains precise temperatures for different yeast strains (e.g., 12-15℃ for ale, 8-10℃ for lager), with capacity to cool 1,000-liter tanks.
Pharmaceutical bulk storage facilities: Keeps non-refrigerated pharmaceuticals (e.g., tablets, capsules) at 15-25℃, with humidity control integration to prevent product degradation.
