| Cold Storage and Distribution Centers | 100–800 kW per compressor, depending on evaporating temperature, condensing temperature, and refrigerant | Evaporating temperature: approximately −40°C to −10°C Condensing temperature: approximately 30°C to 45°C | Ammonia, carbon dioxide, and lower-global-warming-potential HFO or HFO/HFC blends, subject to local regulations | 75–500 kW | Approximately 2,000–6,000 rpm; variable-speed operation is preferred where load changes are frequent | High part-load efficiency, reliable oil separation, low discharge temperature, capacity control, and long maintenance intervals | Check refrigerant approval, electrical frequency, ambient design temperature, corrosion protection, and availability of local service technicians |
| Food Processing and Freezing | 150–1,000 kW per compressor | Evaporating temperature: approximately −45°C to −5°C Condensing temperature: approximately 30°C to 45°C | Ammonia is widely used for large industrial systems; carbon dioxide and lower-GWP alternatives may be selected for specific system designs | 110–630 kW | Approximately 2,000–6,000 rpm | Stable low-temperature performance, food-safe system design, vibration control, oil management, and high availability | Consider hygiene requirements, washdown exposure, stainless-steel accessories, emergency ventilation, and national pressure-equipment rules |
| Industrial Process Cooling | 200–1,500 kW per compressor | Evaporating temperature: approximately −20°C to +10°C Condensing temperature: approximately 30°C to 50°C | Ammonia, HFO/HFC blends, and other approved refrigerants selected according to process temperature and environmental legislation | 150–900 kW | Approximately 2,000–7,000 rpm | Continuous-duty capability, high coefficient of performance, precise capacity control, oil-filter monitoring, and process integration | Verify compatibility with 50 Hz or 60 Hz grids, local hazardous-area requirements, water quality, and the required operating hours per year |
| District Cooling and Large Commercial Buildings | 300–2,000 kW per compressor | Evaporating temperature: approximately +2°C to +8°C Condensing temperature: approximately 30°C to 45°C | Lower-GWP HFO or HFO/HFC blends, ammonia, or other refrigerants permitted by local building and environmental codes | 200–1,200 kW | Approximately 2,000–6,000 rpm | High seasonal efficiency, low sound levels, compact footprint, automatic capacity modulation, and compatibility with building-management systems | Evaluate sound limits, seismic requirements, water-cooled or air-cooled condenser design, and local energy-performance standards |
| Heat Pump and High-Temperature Heating | 100–1,200 kW heating capacity per compressor | Source temperature: approximately 0°C to 30°C Heating supply temperature: approximately 45°C to 90°C | Refrigerant selection depends on discharge temperature, pressure ratio, safety classification, and local environmental requirements | 75–750 kW | Approximately 2,000–6,000 rpm | High discharge-temperature tolerance, strong pressure-ratio capability, reliable oil return, wide operating envelope, and seasonal efficiency | Confirm high-pressure design approval, defrost strategy, cold-start performance, and grid compatibility in the destination country |
| Marine Refrigeration and Offshore Systems | 100–1,000 kW per compressor | Evaporating temperature: approximately −40°C to +5°C Condensing temperature: approximately 35°C to 55°C | Refrigerants must comply with marine safety rules, vessel classification requirements, and applicable environmental regulations | 75–630 kW | Approximately 2,000–6,000 rpm | Compact construction, low vibration, shock resistance, redundancy, corrosion resistance, and operation under changing ambient conditions | Check marine certification, generator compatibility, salt-air protection, emergency shutdown functions, and spare-parts logistics |
| Gas Compression and Process Applications | Capacity is normally specified by mass flow rather than cooling capacity; approximately 500–20,000 m³/h is common for packaged industrial systems | Discharge pressure may range from approximately 5 to 40 bar(g), depending on gas composition and compressor configuration | Application-specific process gases; materials, seals, and lubrication must be selected for the actual gas composition | 100–1,500 kW | Approximately 2,000–7,000 rpm | Gas compatibility, sealing system, pressure ratio, discharge temperature, pulsation control, and hazardous-area certification | Obtain a complete gas analysis, including molecular weight, corrosive components, moisture, allowable leakage, and maximum operating pressure |
| Variable-Load Commercial and Industrial Systems | 80–1,000 kW per compressor | Operating conditions vary widely; design should cover the expected minimum, average, and peak loads | Selected according to system pressure, temperature, safety classification, and phase-down requirements in the installation country | 55–630 kW | Approximately 1,500–6,000 rpm with variable-speed drive where applicable | Wide turndown ratio, efficient slide-valve or variable-volume-ratio control, low starting current, and digital monitoring | Confirm variable-frequency-drive compatibility, electromagnetic-compatibility requirements, harmonic limits, and remote-monitoring protocols |
| Core Technical Selection Criteria |
| Capacity Matching | Select the compressor from actual operating load, not only nominal design load. A practical design should evaluate minimum load, average load, peak load, and future expansion. | For systems with large load variation, use variable-speed control or multiple compressors instead of heavily oversizing one compressor. | Target: stable operation across the expected load range | Capacity data must be compared at identical evaporating temperature, condensing temperature, superheat, subcooling, and refrigerant conditions. |
| Pressure Ratio and Volume Ratio | Match the built-in volume ratio and operating pressure ratio to reduce under-compression or over-compression losses. | A mismatch can increase power consumption, discharge temperature, noise, and mechanical stress. | Evaluate the complete operating envelope | For systems with wide seasonal variation, adjustable volume-ratio control can improve annual efficiency. |
| Motor and Electrical Supply | Common industrial supplies include three-phase 380–415 V at 50 Hz and 440–480 V at 60 Hz; larger installations may use medium voltage. | Motor selection should include starting method, locked-rotor current, efficiency class, insulation system, and cooling method. | Confirm voltage, frequency, phase, and fault level | The compressor package should be checked against local electrical codes, harmonic limits, grounding rules, and enclosure requirements. |
| Ambient and Installation Conditions | Typical design ambient temperatures range from approximately −20°C to +50°C, but the actual allowable range depends on the package and cooling method. | High ambient temperature reduces condensing efficiency and may require larger condensers, additional ventilation, or derating. | Design for the highest local ambient temperature | Consider altitude, humidity, dust, salt exposure, seismic conditions, indoor ventilation, and access for maintenance. |
| Safety and Compliance | Pressure vessels, piping, electrical equipment, refrigerants, and safety devices must comply with the regulations applicable at the installation site. | Typical review areas include pressure-equipment certification, machinery safety, electrical safety, refrigerant handling, and hazardous-area classification. | Certification must match the destination market | Request complete technical files, pressure ratings, safety-device settings, material certificates, and operating manuals before purchase. |
| Lifecycle Cost | Compare purchase price together with electricity consumption, oil, filters, inspections, planned maintenance, downtime, and spare-parts costs. | For equipment operating thousands of hours per year, energy efficiency normally has a greater financial impact than the initial purchase price. | Use total cost of ownership | Ask for performance data at full load and part load, expected service intervals, warranty terms, and local response time. |
| Indicative values are typical engineering ranges for preliminary comparison only. Actual compressor performance depends on refrigerant or gas composition, evaporating and condensing conditions, suction superheat, discharge pressure, oil system, motor efficiency, control method, and installation design. Final selection should be based on certified performance data and a complete operating-envelope review. |