Coolroom Evaporator
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Coolroom Evaporator

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.

 

product-1706-1279
product-1706-1279

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.

unit cooler

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

product-957-582

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

 

 

product-400-538
product-400-538
product-400-538
product-400-538
product-400-538
product-400-538
 

FAQ

01.How does the internal grooved structure of the copper tubes benefit the daily operation of this equipment?  

The internally grooved copper tubes inside the coil dramatically increase the internal heat exchange surface area while successfully lowering the oil film coefficient. This ensures that the refrigerant achieves maximum heat transfer efficiency, leading to faster cooling cycles and reduced electricity consumption for the cold room.

02.What specialized anti-corrosion treatments are applied to the outer casing for harsh environments?  

The unit is constructed using high-quality steel plates treated with an advanced industrial-grade powder coating, combined with an internal middle tube sheet made of premium aluminum. This multi-material design delivers exceptional rust and corrosion resistance, preventing structural deterioration in high-humidity or salty storage environments.

03.How is the electric defrosting system designed to prevent ice buildup in the water tray?  

This model features a specialized separate installation configuration where high-grade stainless steel heating tubes are individually fitted into both the main coil block and the water drainage tray. Equipped with ultra-low temperature epoxy resin leads and insulated joints, it guarantees safe, rapid, and complete ice melting to prevent water tray overflow.

04.What is your standard turnaround time for sample orders versus bulk cargo?  

We can dispatch in-stock sample units within just 3 working days, while complete bulk production orders are manufactured and ready for shipment within 10 to 15 working days.

05.What standard customization services do you provide for international buyers?  

We fully support comprehensive OEM and ODM customization services, including multi-language nameplates, personalized corporate logos, and custom voltage or mounting configurations to match your local market standards.
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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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