3 HP Remote Condensing Unit, Solar-Powered Refrigeration Unit
- Cooling capacity: 4.2 (1.3–5.6) kW
- Evaporating temperature range: −35 to 0 ℃
- Cold-room temperature range: −20 to 10 ℃
- Input power: 1.9 (0.6–2.8) kW
- Suggested PV configuration: 3 panels
The 3HP solar condensing unit is a multi-energy refrigeration system based on photovoltaic direct-drive technology. For solar DC direct-drive refrigeration, DC power from the solar panels directly powers the inverter compressor and fans, eliminating the need for an inverter-to-AC conversion. It's ideal for logistics parks, institutional cold rooms, and farm and harvest-site storage, and it's especially useful where solar resources are plentiful, but grid supply is irregular or expensive.
Eight Core Technologies- 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 across an ambient temperature range of -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-030ZBP-ACDC-A (DLFR-351AC-P44-A) | |
|---|---|---|
| HP (Horsepower) | HP | 3 |
| Evaporating temperature range | ℃ | −35 to 0 |
| Cooling capacity | kW | 4.2 (1.3–5.6) |
| Input power | kW | 1.9 (0.6–2.8) |
| Coefficient of Performance (COP) | W/W | 2.33 |
| Annual energy efficiency | 3.3 | |
| Noise | dB(A) | 52 |
| Power supply (AC) | 220V ~ 50Hz | |
| Power supply (DC) | 80–380 VDC | |
| Recommended solar power | >3 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 |
| Pipe connection type | Threaded Connection | |
| Outdoor dimensions W×D×H | mm | 900 × 337 × 700 |
| Outdoor net weight | kg | 68 |
| Refrigeration Unit (Indoor Unit) | DLFR-351AC-P44-A | |
| Fan air flow | m³/h | 3000 |
| Fan power | W | 170 × 1 |
| Drip tray defrost power | W | 600 |
| Indoor dimensions W×D×H | mm | 900 × 340 × 580 |
| Indoor net weight | kg | 43 |
| Liquid connection pipeline | mm | 9.52 |
| Suction connection pipeline | mm | 16 |
The inverter, compressor, and blowers are directly powered by the DC power generated by the panels, without the need for AC conversion. The unit operates on PV when the solar output exceeds the refrigeration capacity. In the event of a decrease in light, the compressor is maintained by the mains supply, which is seamlessly supplemented by the storage system. Surplus solar energy can be retained for future operation. Intelligent energy management optimizes the utilization of renewable energy sources and reduces the expense of maintaining a room's temperature by coordinating solar, mains, and storage in accordance with the cooling load and energy availability.
