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The Topchill Barrel Pump Parallel Screw Unit Low Temperature is an integrated cooling solution that combines advanced semi-hermetic screw compressors with efficient barrel pump circulation technology. Designed for medium-to-low temperature applications (+10°C to -25°C), it delivers large-capacity cooling (133.6 kW–538.8 kW) for industrial cold storage, agricultural pre-cooling, and logistics cold chain hubs. Its modular design allows flexible parallel configuration (2–3 compressors per unit), and it uses R507A refrigerant (low GWP, environmentally friendly) to meet global sustainability standards. With a focus on reliability and energy efficiency, this unit is ideal for large-scale facilities requiring consistent low-temperature control.

Integrated Compressor & Pump Circulation: Combines semi-hermetic screw compressors with high-efficiency barrel pumps in one unit, eliminating the need for separate circulation systems. This reduces installation complexity by 50% and improves system compatibility.
Large-Capacity Cooling Performance: Delivers cooling capacities from 133.6 kW (model TQ-C-L-D-SRL200E-2-Z) to 538.8 kW (model TQ-C-L-D-SRL510E-3-Z), with a refrigerant displacement of 400 m³/h to 1,530 m³/h. It meets the needs of large cold storage (10,000+ m²) and high-volume pre-cooling facilities.
Energy-Efficient Modular Design: The modular parallel configuration (2–3 compressors) allows independent operation of each compressor, matching cooling loads in real time. This cuts energy consumption by 30% compared to single-compressor large units during partial-load periods.
Environmentally Friendly Refrigerant: Uses R507A refrigerant (GWP: 3,800), which complies with EU F-Gas regulations and is safer for the ozone layer than traditional refrigerants (e.g., R22). It also offers excellent low-temperature performance (-25°C to +10°C).
Intelligent Precision Control: A microprocessor-based system manages temperature with ±0.3°C accuracy and monitors pump flow, compressor pressure, and oil level in real time. It provides remote access via a cloud platform, enabling centralized management of multiple units.
Durable Industrial-Grade Construction: The unit’s casing is made of 304 stainless steel, resisting corrosion in high-humidity low-temperature environments. The barrel pump features a mechanical seal design, reducing leakage rates to < 0.1 L/year.
Easy Maintenance & Service: The modular layout allows individual compressor/pump replacement without shutting down the entire system. Service access doors on all sides simplify inspection and repair, reducing downtime by 40%.
This low-temperature unit operates on a 380V/50HZ/3PH power supply and uses R507A refrigerant (indicated by “C” in the model name). It is designed for an evaporating temperature of -32°C and condensing temperature of 36°C (standard working conditions). Cooling capacity ranges from 133.6 kW (TQ-C-L-D-SRL200E-2-Z, 2 parallel compressors) to 538.8 kW (TQ-C-L-D-SRL510E-3-Z, 3 parallel compressors). Refrigerant displacement varies from 400 m³/h (2-compressor models) to 1,530 m³/h (3-compressor models). The semi-hermetic screw compressors (SRL series) have a power range of 20 HP–50 HP per unit, and the barrel pumps feature a flow rate of 200 m³/h–510 m³/h per pump. The unit includes a shell-and-tube condenser (water-cooled) or copper-tube aluminum-fin condenser (air-cooled), with a built-in oil separator and liquid receiver.
| COOLING CAPACITY OF PARALLEL SCREW UNIT WITH BARREL PUMP | ||
| Evaporating SST:-32℃ Condensing SDT:36℃ | ||
| Model | Cooling capacity(KW) | Displacement(m3/h) |
| TQ-C-L-D-SRL200E-2-Z | 133.6 | 400 |
| TQ-C-L-D-SRL200E-3-Z | 200.4 | 600 |
| TQ-C-L-D-SRL240E-2-Z | 163.8 | 480 |
| TQ-C-L-D-SRL240E-3-Z | 245.7 | 720 |
| TQ-C-L-D-SRL290E-2-Z | 199.2 | 580 |
| TQ-C-L-D-SRL290E-3-Z | 298.8 | 870 |
| TQ-C-L-D-SRL330E-2-Z | 221.6 | 660 |
| TQ-C-L-D-SRL330E-3-Z | 332.4 | 990 |
| TQ-C-L-D-SRL350E-2-Z | 237.6 | 700 |
| TQ-C-L-D-SRL350E-3-Z | 356.4 | 1050 |
| TQ-C-L-D-SRL370E-2-Z | 256.4 | 740 |
| TQ-C-L-D-SRL370E-3-Z | 384.6 | 1110 |
| TQ-C-L-D-SRL400E-2-Z | 282 | 800 |
| TQ-C-L-D-SRL400E-3-Z | 423 | 1200 |
| TQ-C-L-D-SRL510E-2-Z | 359.2 | 1020 |
| TQ-C-L-D-SRL510E-3-Z | 538.8 | 1530 |
| NOMENCLATURE |
| TQ-C-L-D-SRL200E-3-Z |
| ■ TQ: Topchill brand |
| ■ C: Stands for R507A |
| ■ L:Screw compressor |
| ■ D:D-Low temperature; Z-Medium temperature; G-High temperature |
| ■ SRL200E: Compressor model |
| ■ 3:the number of parallel |
| ■ Z:Z-evaporating cooled; S-water cooled; F-air cooled |
Medium & Low-Temp Cold Storage: Perfect for large warehouses storing frozen goods (-25°C to -18°C) and fresh produce (0°C to +15°C). The modular design allows separate temperature zones, meeting mixed-storage needs (e.g., frozen meat and fresh vegetables in the same facility).
Industrial Process Cooling: Provides efficient cooling for low-temperature industrial processes (e.g., plastic film production, rubber vulcanization). It maintains process temperatures at -10°C to +5°C, ensuring product consistency and reducing scrap rates by 18%.
Agricultural Product Pre-Cooling: Used in pre-cooling rooms for fruits (e.g., apples, bananas) and vegetables (e.g., lettuce, tomatoes). It quickly removes field heat (from +30°C to +5°C in 1–2 hours), extending shelf life by 50% and preserving nutritional value.
Commercial Refrigeration for Large Retailers: A cost-effective solution for supermarket back-room storage and distribution centers. The R507A refrigerant meets global environmental standards, and the unit’s large capacity supports 1,000+ m² of retail cold storage.
Logistics & Distribution Hubs: Ensures temperature consistency (-20°C to +8°C) during short-term storage and handling of goods in transit (e.g., cross-border cold-chain trucks, port warehouses). The reliable pump circulation prevents temperature fluctuations during door openings.
Q: What is the MOQ?
A: 1 piece, supporting both single-unit purchases and large-scale projects (e.g., 5+ units for 50,000 m² cold storage).
Q: What is the lead time?
A: 2–4 weeks. 3-compressor models or custom condenser types (e.g., air-cooled for water-scarce areas) may require an extra 5–8 days.
Q: What are the payment terms?
A: For orders over 10,000 USD: 30% deposit in advance, 70% before goods loading. For orders under 10,000 USD: 100% advance payment.