Side-by-side
APSG VFD Air-Cooled Variable-Speed Screw Chiller vs PWMC / RWC Water-Cooled Chiller
Spec comparison for two products on Aviation Souk. Both compete in HVAC & Climate Systems.
HVAC & Climate Systems
APSG VFD Air-Cooled Variable-Speed Screw Chiller
by Petra Engineering Industries
Variable-speed air-cooled screw chiller with R-1234ze refrigerant and IPLV up to 5.85 kW/kW, engineered for large commercial plants where part-load efficiency and low ambient noise are non-negotiable.
HVAC & Climate Systems
PWMC / RWC Water-Cooled Chiller
by Petra Engineering Industries
Modular water-cooled chiller from 10 to 70 TR per module with up to 16 modules combinable, offering incremental capacity expansion, N+1 redundancy, and optional heat-pump operation — suited to phased or mission-critical cooling builds.
| Cost of ownership | APSG VFD Air-Cooled Variable-Speed Screw Chiller | PWMC / RWC Water-Cooled Chiller |
|---|---|---|
| Price tier | — | — |
| Lead time (weeks) | ?–? | ?–? |
| Delivery | — | — |
| Install | — | — |
| GCC airports deployed | 0 | 0 |
| Certifications | 0 | 0 |
Specs
Technical specifications.
| Spec | APSG VFD Air-Cooled Variable-Speed Screw Chiller | PWMC / RWC Water-Cooled Chiller |
|---|---|---|
| IPLV (high-efficiency) | 5.85 kW/kW | — |
| Part-load improvement vs fixed-speed | 20–25 % | — |
| Refrigerant | R-1234ze (GWP 7) | R-410A (factory charged per module) |
| Compressor type | Semi-hermetic twin screw, VFD-driven | Dual scroll per module, independent circuits |
| Condenser coil | Microchannel (MCHE) | — |
| Refrigerant-side design pressure | 1,000 kPa | — |
| Water-side max working pressure | 1,500 kPa | — |
| Electrical panel rating (standard) | NEMA 3X / IP54 | — |
| Low-ambient heater protection (optional) | Down to −29 °C | — |
| Efficiency standard compliance | ASHRAE 90.1 | — |
| Certification | AHRI 550/590, Eurovent | — |
| Cooling capacity per module | — | 35–246 kW (10–70 TR) |
| Maximum modules combinable | — | 16 |
| Evaporator type | — | Stainless steel brazed-plate heat exchanger |
| Salt-spray corrosion rating | — | 5,000 hours |
| Heat-pump hot water output (optional) | — | Up to 54 °C |
| BMS protocols (optional) | — | BACnet, Modbus, LonWorks |
| Casing | — | Heavy-gauge galvanised steel, electrostatic powder coat |
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