Reciprocating Refrigeration Compressor Product Portfolio: Small / Medium / Large 4-Cylinder & Large 6-Cylinder Single-Stage Piston Units

Reciprocating Refrigeration Compressor Product Portfolio: Small / Medium / Large 4-Cylinder & Large 6-Cylinder Single-Stage Piston Units

Reciprocating refrigeration compressors cover multiple cylinder configurations, including small 4-cylinder, medium 4-cylinder, large 4-cylinder and large 6-cylinder models for single-stage refrigeration applications. This series of xiteliduo reciprocating refrigeration compressors provides cooling capacity spanning 35kW to 480kW, covering small cold rooms up to heavy-duty large logistics cold storage. All single-stage reciprocating refrigeration compressors achieve volumetric efficiency above 80% at rated evaporation temperature of -10℃. Rated speed is uniformly 1450rpm for all piston models. All these units can maintain stable continuous operation under ambient temperature ranging from 5℃ to 42℃. Crankcase heater power scales with cylinder size from 150W to 220W. Valve plate overhaul cycles vary from 6800 to 7500 operating hours, depending on cylinder configuration. System impurities exceeding 50ppm will shorten service life significantly. All xiteliduo single-stage reciprocating refrigeration compressors adopt cast iron cylinder blocks. The cylinder assembly withstands continuous maximum discharge pressure up to 2.5MPa. Capacity grading is designed for stepped project selection: small 4-cylinder, medium 4-cylinder, large 4-cylinder and large 6-cylinder reciprocating refrigeration compressor. The floor footprint increases with cylinder size, ranging from 0.9㎡ for small 4-cylinder to 1.8㎡ for large 6-cylinder, which helps designers plan equipment room layout. Recommended lubricating oil grade for all single-stage piston models is ISO VG68. Oil cleanliness must stay NAS 8 grade or higher to protect piston rings and bearings. Starting current of all piston compressors is roughly 3.5~3.6 times rated current. Contactors should be sized at 1.25 times rated current for circuit protection. Liquid receiver volume for each single-stage reciprocating refrigeration compressor system shall be 1.5 times total refrigerant charge to suppress liquid slugging. Suction filter inspection must be performed every 2000 working hours. Filter blockage over 60% reduces actual cooling capacity by roughly 13~14% for all piston models. Procurement engineers select different cylinder models based on cooling load. Single-stage reciprocating refrigeration compressors cannot meet evaporation demand below -25℃. For temperatures below -40℃, users need to switch to single-unit two-stage refrigeration compressor rather than any single-stage reciprocating refrigeration compressor. Single-stage reciprocating refrigeration compressors can run 16~20 hours continuously per day, with annual maintenance downtime between 3.4% and 3.7%. Compatible refrigerants include R404A and R134a for all single-stage piston compressors. R23 cannot be directly applied due to excessive discharge temperature. Noise level measured at 1 meter ranges from 80dB(A) to 83dB(A). Installing acoustic enclosures can reduce noise by 10~11dB(A) to meet site noise requirements. Long time operation above rated discharge temperature will reduce total usable life by around 32~35% within two years for all single-stage piston compressors. Safety relief valve of all single-stage reciprocating refrigeration compressor activates at 2.7MPa, and annual calibration is required to guarantee pressure protection performance. Condenser matching for these piston compressors shall hold condensing temperature from 38℃ to 45℃. Each 5℃ condensing temperature rise cuts cooling capacity by about 9%. Piston ring clearance inspection is required during overhaul. If clearance exceeds 0.15mm, volumetric efficiency drops below 73~75% and rated load cannot be maintained. xiteliduo single-stage reciprocating refrigeration compressors all adopt spring-loaded suction and discharge valves. Valve opening response time is controlled within 0.8ms. Cylinder unloading mechanisms differ by cylinder quantity to achieve multi-step capacity regulation and avoid frequent motor startup and shutdown events. Crankshaft bearing temperature alarm threshold is set at 85℃. Power cut protection triggers above 90℃ to prevent crankshaft seizure and permanent mechanical damage. Transportation tilt angle for all single-stage piston compressors cannot exceed 15 degrees. Larger tilt will cause oil flooding and liquid hammer upon startup. Matched oil separator requires separation efficiency ≥99.5%. Oil carry-over higher than 0.5% will contaminate heat exchangers and reduce heat transfer coefficient within 12 months. Maintaining suction superheat of 6K to 10K prevents liquid return and maximizes cooling capacity for all single-stage reciprocating refrigeration compressors. Installation foundation concrete grade must be C25 or higher. Foundation settlement exceeding 0.2mm per year will trigger shaft misalignment and abnormal vibration. Full-load motor power factor ranges from 0.82 to 0.84. Reactive power compensation capacitors can reduce electricity consumption cost by 4% to 6%. Well-maintained single-stage piston refrigeration systems shall keep annual refrigerant leakage below 0.5%. Leakage over 3% requires full pressure test and seal replacement. For shutdown periods longer than 6 months, oil change and nitrogen sealing must be completed. Without preservation, cylinder rust risk rises by 52~55%. Annual maintenance cost accounts for 3.0%~3.3% of equipment purchase price, rising as cylinder quantity and displacement increase. Motor insulation class of all xiteliduo single-stage reciprocating refrigeration compressors is Class F, maximum winding temperature 155℃, 30min overload tolerance at 110% rated current. Evaporation pressure sensor needs annual calibration. Sensor deviation exceeding 0.05MPa will disturb control logic and destabilize compressor working conditions. Suction pipe flow velocity shall remain 12 m/s to 18 m/s to guarantee reliable oil return when retrofitting piping for reciprocating refrigeration compressor. Single-unit two-stage refrigeration compressor works for -40~-70℃ evaporation, which is far colder than the working limit of single-stage reciprocating refrigeration compressor. Cascade refrigeration unit achieves temperature below -70℃ with dual independent refrigerant circuits, but investment and maintenance cost are much higher. Screw refrigeration compressor shows better efficiency for stable full-load operation above 320kW, while piston compressors perform better under fluctuating partial loads. Pistons for all single-stage reciprocating refrigeration compressors adopt 11% silicon silicon-aluminum alloy, maintaining mechanical strength up to 170℃. Suction manifold pressure drop must stay under 0.02MPa. Excessive pressure drop reduces cylinder filling ratio and volumetric efficiency. Oil pressure differential should be continuously monitored; normal range 0.2~0.4MPa. Pressure difference below 0.15MPa indicates potential oil pump failure. Minimum continuous running time after startup is 3 minutes. Early shutdown will lead to poor oil return and accelerate mechanical wear. Explosion-proof customization is available for all models, Ex d II BT4 motor grade, increasing equipment cost by roughly 24~26%. Condenser fouling factor shall stay under 0.00017 m²·K/W. Fouling factor reaching 0.0003 reduces cooling capacity by about 11%. Allowable power supply voltage fluctuation is ±10% rated voltage. Voltage drop over 12% will trigger frequent motor overload protection.

FAQ Q: What cooling capacity range covers xiteliduo single-stage reciprocating refrigeration compressor portfolio? A: 35kW to 480kW, covering small 4-cylinder, medium 4-cylinder, large 4-cylinder and large 6-cylinder models. Q: What refrigerant is suitable for these single-stage piston compressors? A: R404A and R134a are the mainstream options; R23 cannot be used directly. Q: What is the low evaporation temperature limit for single-stage reciprocating refrigeration compressors? A: Typical limit is -25℃. For lower temperature, single-unit two-stage or cascade refrigeration unit is required. Q: What is the recommended oil for the whole single-stage piston compressor range? A: ISO VG68 refrigeration oil, NAS 8 grade or better oil cleanliness. Q: What is the common risk if the suction filter is heavily blocked? A: Suction superheat rises, volumetric efficiency drops and actual cooling capacity decreases. Q: What is the main advantage of reciprocating piston compressors vs screw refrigeration compressor? A: Better performance under variable and fluctuating partial loads, lower initial investment for medium and small capacity. Q: What protection will activate when crankshaft bearing temperature exceeds 90℃? A: The control system cuts off power supply to prevent crankshaft seizure and permanent mechanical damage.