Durable 3400W DJ20 Air Cooler For 20㎡ Cold Storage Room
Brand ：RFJ
Model number ：DJ20
Refrigerating Capacity: 3.4KW
Nominal Area：20㎡
Coil Internal Volume:5.8L
Quantity of Fans：2
Description
Durable 3400W DJ20 Air Cooler for 20㎡ Cold Storage Room
DJ-3.4/20 is engineered for -25℃ ultra-low temperature quick-freezing workshops for medium-sized seafood and fresh meat processing. Equipped with 3400W rated cooling capacity, 20㎡ nominal heat exchange area and exclusive 9mm wide fin spacing, the large gap fin layout effectively slows dense frost buildup under high-humidity quick-freeze environment, avoiding frequent coil blockage and sustaining continuous stable refrigeration output.
Medium-sized quick-freeze rooms often face inconsistent core temperature of raw ingredients caused by scattered cold air. Equipped with twin Φ400 low-temperature resistant axial fans and optimized internal flow channel, the unit delivers concentrated directional cold airflow, speeding up product core temperature drop and eliminating partial incomplete freezing in compact quick-freezing space.
All copper coil joints adopt full silver brazing craft, and every finished coil undergoes 3.0MPa nitrogen pressure retention test per international refrigeration standard before assembly. Strict leak detection effectively prevents refrigerant leakage under long-time ultra-low temperature alternating cold-hot working condition, cutting unexpected system downtime and extra refrigerant supplement cost for end users.
| Model | DJ-3.4/20 |
|---|---|
| Nominal Cooling Capacity | 3400W |
| Nominal Area | 20㎡ |
| Tube Volume | 5.8L |
| Inlet/Outlet Pipe Diameter | φ16/φ22mm |
| Fin Defrost Power | 2400W |
| Water Tray Defrost Power | 1200W |
Ruifujie specializes in DL/DD/DJ full-series overhead air cooler development and manufacturing over 20 years, covering high, medium and ultra-low three temperature grades. Customization of fin pitch, operating voltage and defrost power is available, with products widely exported to global food processing and cold-chain construction projects.
| Supply Ability | 1000000 pieces/year,MOQ is usually one piece, |
| Shipping Time | Sample order in stock within 3 days,Bulk order generally 10-15 working days after receiving deposit |
| Shipping Method | Support by sea,by air,by express(DHL,FedEx,UPS...) |
| Payment Terms | TT/Western Union |
| 30% Advance Payment,70% Final Payment | |
| Shipping Port | Ningbo Port, Shanghai Port, Shenzhen Port |
FAQ
Q: What's the matching cold room size of DJ-3.4/20?
A: Suitable for 18~25㎡ medium-sized quick-freezing cold room for aquatic product small processing factory.
Q: Can this model adapt R507 low-temperature special refrigerant?
A: We can adjust internal coil piping layout to match various low-GWP refrigerants before mass production.
Q: Does every unit finish strict air tightness inspection before delivery?
A: Yes, 3.0MPa nitrogen pressure holding test is mandatory for all coils as factory standard procedure.
Q: What is bulk order production lead time?
A: In-stock items ship within 3 working days; bulk order needs 10~15 working days after deposit confirmation.
Q: What's the official after-sale warranty policy?
A: Core fan and heating components enjoy 12-month factory warranty against non-artificial damage.
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