Coolroom Evaporator
Brand:RFJ
Model number:RFJ-D7.7E4.5
Refrigerating Capacity:7.7KW
Air Volume:2x2200m³/h
Fan Voltage:220V / 380V
Quantity of Fans:2
Description
Optimized Cold Storage Positioning
The D7.7E4.5 coolroom evaporator is a high-efficiency, ceiling-mounted industrial air cooler specifically developed for medium and high-temperature storage projects maintaining a stable 0°C warehouse baseline. Delivering a nominal cooling capacity of 7.7 kW while maintaining a structurally minimized footprint, this heavy-duty coolroom evaporator is the perfect thermal selection for high-density food warehouses, supermarket cold storage bays, and logistics terminals where saving structural indoor space is highly critical.


Solving Spatial and Airflow Inefficiencies
Standard commercial walk-in units often suffer from high operational noise, bulky size configurations, and sluggish heat exchange cycles that lead to localized temperature drift. The D7.7E4.5 coolroom evaporator successfully resolves these challenges by integrating internally grooved copper tubes with advanced louvered window fins featuring dual sine wave patterns and wavy edges. This layout maximizes the internal thermodynamic surface area, reduces oil film resistance coefficients, and creates a highly balanced forced air path across the space.
Robust Construction and Component Engineering
Built to endure high-humidity environments, this model is constructed from premium steel plates treated with an anti-corrosive powder-coated surface. It features dual low-temperature external rotor motors running at 145 W each with an IP55 protection rating and Class F insulation to ensure quiet, long-term operation from -40°C to 60°C. For flexible system integration, the assembly supports various refrigerants such as R404A, R507A, R23, R134a, and R22, with every unit successfully passing a 2.8 MPa clean air pressure test before delivery.

Parameter Table
| Model | D7.7E4.5 |
| Nominal Cooling Capacity | 7.7 kW |
| Air Volume | 2 × 2200 m³/h |
| Motor Power | 2 × 145 W |
| Fan Voltage | 220 V / 380 V |
| Liquid Inlet / Gas Return Diameter | 12 mm / 19 mm |
| Electric Defrost Power | 3.5 kW |
Company Profile

Shenzhen Ruifujie Technology Co., Ltd.
Ruifujie is an established, modernized industrial refrigeration pioneer with over 20 years of manufacturing and engineering experience. Our comprehensive core catalog encompasses high-efficiency scroll, piston, rotor, semi-hermetic, and screw compressors, which perfectly align with our specialized walk-in cold rooms, quick-freezers, and commercial ice machines. Supported by an experienced engineering department, we offer versatile OEM/ODM customization services to accommodate unique dimensional and regional voltage needs. Ruifujie's equipment is exported to major international markets-including the USA, UK, UAE, Saudi Arabia, and Russia-earning a strong reputation among global buyers for competitive cost-performance and enduring reliability.
16+ Years Experience
Sea-near Factory
Freight Cooperation
Global Shipping
Certifications






FAQ
01.How does the internal grooved structure of the copper tubes benefit the daily operation of this equipment?
02.What specialized anti-corrosion treatments are applied to the outer casing for harsh environments?
03.How is the electric defrosting system designed to prevent ice buildup in the water tray?
04.What is your standard turnaround time for sample orders versus bulk cargo?
05.What standard customization services do you provide for international buyers?

Engineering Project Quotation
Ruifujie brings extensive commercial contracting and cold-chain expertise to deliver integrated, multi-unit layouts for global engineering installations. We specialize in aligning our coolroom evaporator configurations with complex industrial site dimensions, customized mounting configurations, and specific electrical requirements. Please forward your blueprint details, total cooling load parameters, or target procurement quantities, and our application engineering department will generate a comprehensive project solution proposal within 8 hours.
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