Products Description
Bitzer Compressor Racks with 3 Compressors 720HP
The 720HP compressor racks with 3 screw compressor is a high-performance refrigeration system based on Bitzer semi-hermetic screw/piston compressors (Germany), designed for large cold storage, food processing, and industrial cooling applications requiring high cooling capacity and reliability. By integrating multiple compressors in parallel, this unit achieves energy efficiency, intelligent load adjustment, and redundant backup functionality.
Detailed Photos
Products Features
(1) High Energy Efficiency
✅ Genuine Bitzer Compressors: Equipped with Bitzer CSH series screw compressors or 6GEY series piston compressors, delivering a COP of 3.8–4.2 (at -35°C).
✅ Parallel Variable Frequency Drive (VFD): Optional 1–2 VFD compressors enable 10%–100% capacity modulation, reducing energy consumption by over 30%.
✅ Advanced Oil Management: High-efficiency oil separator (≤5ppm residual oil) and precise oil temperature control (±1°C).
(2) Intelligent Control System
✅ PLC + Touchscreen Interface: Automatically balances compressor runtime to prevent overloading.
✅ Remote Monitoring: Supports Modbus RTU/Ethernet for integration with BMS.
✅ Multi-Level Protection: High/low pressure, oil pressure differential, motor overheating, phase sequence protection, etc.
(3) Robust & Reliable Construction
✅ Industrial-Grade Components:
304 stainless steel base with anti-vibration design.
Brazed plate heat exchangers (SWEP/Danfoss), rated for 40bar.
✅ Low-Temperature Operation:
Cold-start kit (-30°C ambient).
Crankcase heater (prevents liquid slugging).
(4) Scalability & Flexibility
✅ Modular Design: Supports expansion (up to 8 compressors in parallel).
✅ Multi-Refrigerant Compatibility:
Standard: R404A/R507A
Eco-friendly options: NH₃ (ammonia), CO₂ (transcritical).
Products Parameters
| BITZER low temp. compressor racks specification list | |||||
| Unit model | MBZLGF3-225(L)JY | MBZLGF3-330(L)JY | MBZLGF3-375(L)JY | MBZLGF3-480(L)JY | |
| Refrigerant | R507(R404A) | ||||
| Power supply | 380V/3P/50HZ | ||||
| Compressor | Model | HSN7471-75 | HSN8561-110 | HSN8571-125 | HSN8591-160 |
| Qty | 3 | 3 | 3 | 3 | |
| Evaporating Temperature | -50℃~-10℃ | ||||
| Evap.Temp -25℃ |
Cooling capacity(KW) | 324.9 | 481.5 | 537.3 | 672 |
| Power input(KW) | 171 | 244.5 | 273.6 | 335.4 | |
| Running current(A) | 273.3 | 407.1 | 459.3 | 554.1 | |
| Evap.Temp -42℃ |
Cooling capacity(KW) | 163.2 | 234 | 271.5 | 334.5 |
| Power input(KW) | 146.4 | 218.1 | 233.1 | 295.8 | |
| Running current(A) | 236.7 | 367.8 | 399.6 | 492 | |
| Liquid pipe(mm) | DN50 | DN65 | DN65 | DN65 | |
| Suction pipe(mm) | DN125 | 2*DN125 | 2*DN125 | 2*DN125 | |
| Oil separator outlet(mm) | DN80 | DN80 | DN100 | DN100 | |
| Receiver inlet(mm) | DN65 | DN80 | DN80 | DN80 | |
| Overall size | L(mm) | 4000 | 4800 | 4800 | 4800 |
| W(mm) | 1950 | 2100 | 2100 | 2100 | |
| H(mm) | 1700 | 2200 | 2200 | 2200 | |
| Cooling capacity and power are calculated by Tc. 35℃, this is also suitable for evaporation condenser. | |||||
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