6 HP Hermetic Condensing Unit, Solar Direct Drive (SDD)
- Cooling capacity: 8.6 (2.8–11.5) kW
- Evaporating temperature range: −35 to 0 ℃
- Cold-room temperature range: −20 to 10 ℃
- Input power: 3.7 (1.4–5.7) kW
- Suggested PV configuration: 8 panels
The 6HP solar condensing unit increases the refrigeration capacity of larger cold rooms while maintaining the same solar direct-drive architecture. The inverter compressor and fans are directly powered by DC from the panels, without the need for AC conversion. It is most effective in areas with a strong solar resource and an uneven grid supply, as well as in logistics parks, institutional cold rooms, and agricultural harvest-site storage.
Core TechnologiesThe 6HP unit is equipped with the eight core technologies of the solar direct-drive range, including a hybrid solar power supply with three-condition self-adaptation, a full DC inverter drive, hot-gas intelligent defrost, enhanced vapor injection for low-temperature capacity, intelligent central control with 2–12 unit modular parallel operation, high-efficiency inverter control, 4G remote monitoring, and factory-configured plug-and-cool installation.
- Hybrid solar power supply. Solar and mains cooperate effectively, with solar direct-drive prioritized, lowering cold-room electricity costs significantly. The system self-adapts to three conditions: on clear days, it runs on full PV; on cloudy or rainy days, surplus PV is utilized first, with mains smoothing the deficit to keep the unit running continuously; and at night, it can run on off-peak mains to keep the daily electricity cost structure as low as possible.
- Full DC drive. A whole-unit DC inverter architecture precisely adjusts power to demand, eliminating the wasted energy of fixed-speed cycling, resulting in better temperature control, lower running noise, and a longer service life.
- Hot-gas intelligent defrost. Defrost activates just when frost is detected, rather than on a predetermined timer. Hot-gas (hot-fluorine) defrosting removes frost and restores box temperature more quickly than traditional electric defrosting, safeguarding stored products from temperature fluctuations.
- Enhanced vapor injection (EVI). EVI improves low-temperature capacity, allowing the unit to maintain full-power refrigeration even in extreme cold temperatures ranging from -15 ℃ to 45 ℃.
- Intelligent central control. Each unit precisely regulates its own temperature, and 2-12 units can be connected in modular parallel to form anything from a modest single cold room to a big multi-unit cold-storage cluster.
- High energy efficiency. A high-precision inverter algorithm eliminates the losses associated with frequent start-stop cycling, resulting in significant energy savings over fixed-speed devices and a shorter payback period over a long operational life.
- 4G intelligent remote control. A built-in 4G module offers three-tier monitoring: phone, web, and remote control center. The operating condition is accessible in real time, and issues are flagged proactively for unattended, remote-managed operation.
- Installation and compatibility. The unit is delivered as a complete, factory-configured set, with no additional external valves or separate electrical control box, and has been factory-tested for full-condition compatibility. It comes pre-charged with an optimal refrigerant fill, eliminating the need for on-site charging or specialized re-commissioning: a hand-held wired controller allows for one-button start and cooling upon power-up. The installation difficulties are comparable to those of a household air conditioner: there is no professional welding of expansion or liquid-supply solenoid valves, no sophisticated field wiring because the controls are built into the body, and just the unit's power connection is required. This reduces the installation threshold, labor, and lead time dramatically.
| Solar Direct-Drive Variable-Frequency Freezer & Cooler | DFNTLR-060ZBP-ACDC2-A (DLFR-352AC-P44-A) | |
|---|---|---|
| HP (Horsepower) | HP | 6 |
| Evaporating temperature range | ℃ | −35 to 0 |
| Cooling capacity | kW | 8.6 (2.8–11.5) |
| Input power | kW | 3.7 (1.4–5.7) |
| Coefficient of Performance (COP) | W/W | 2.33 |
| Annual energy efficiency | 3.3 | |
| Noise | dB(A) | 63 |
| Power supply (AC) | 380V / 3 ~ 50Hz | |
| Power supply (DC) | 560–780 VDC | |
| Recommended solar power | >7.5 kW | |
| Safety protection | High/Low Pressure, Discharge Overheat, Suction Low-Superheat Protection | |
| Refrigerant | R410A | |
| Compressor type | DC Compressor | |
| Compressor quantity | Unit | 1 |
| Heat exchanger (air side) | Finned Tube Heat Exchanger | |
| Condenser fan type | Brushless DC Motor | |
| Condenser fan motor power | W | 120 × 2 |
| Pipe connection type | Threaded Connection | |
| Outdoor dimensions W×D×H | mm | 995 × 412 × 1350 |
| Outdoor net weight | kg | 120 |
| Refrigeration Unit (Indoor Unit) | DLFR-352AC-P44-A | |
| Fan airflow | m³/h | 3000 × 2 |
| Fan power | W | 170 × 2 |
| Drip tray defrost power | W | 1200 |
| Indoor dimensions W×D×H | mm | 1500 × 340 × 580 |
| Indoor net weight | kg | 67 |
| Liquid connection pipeline | mm | 12.7 |
| Suction connection pipeline | mm | 19 |
The inverter, compressor, and fans are directly driven by the DC power generated by the panels, without the need for AC conversion. The compressor continues to operate when the solar output exceeds the demand, and the unit operates on photovoltaic (PV) power. As the light decreases, the mains supply is supplemented to ensure that the compressor remains operational. Storage is configured to retain excess solar energy for future use. Solar, mains, and storage are coordinated by intelligent energy management to increase renewable usage and reduce operating costs.
