Custom Refrigeration Evaporator Supplier — Engineered for Industrial Cold Storage & Cold Chain Logistics
XNAIR designs and manufactures commercial-grade refrigeration evaporators tailored to your exact cooling capacity, temperature range, and voltage requirements. Built for cold storage facilities, food processing plants, pharmaceutical冷链, and supermarket refrigeration systems worldwide.
Product Overview
XNAIR custom refrigeration evaporators are purpose-built for industrial cooling environments where off-the-shelf units fall short. Each unit is configured to your specified cooling duty (from 2 kW to 80 kW), operating temperature band, fin spacing, and defrost method. Constructed with stainless steel or hot-dip galvanized casing, internally grooved copper tubes, and hydrophilic aluminum fins, these evaporators deliver reliable heat exchange performance across cold storage, food processing, pharmaceutical, and retail refrigeration applications. All units undergo 100% factory run-testing before dispatch.
§Technical Specifications
| Parameter | XE-M Series (Medium Temp) | XE-L Series (Low Temp) | XE-U Series (Ultra-Low Temp) |
|---|---|---|---|
| Temperature Range | 0°C to +10°C | -25°C to -5°C | -40°C to -18°C |
| Cooling Capacity | 3 kW – 65 kW | 2 kW – 55 kW | 2 kW – 40 kW |
| Air Flow Rate | 1,200 – 22,000 m³/h | 900 – 18,000 m³/h | 700 – 14,000 m³/h |
| Fin Spacing | 4 mm / 6 mm | 6 mm / 8 mm | 8 mm / 10 mm / 12 mm |
| Defrost Type | Off-cycle / Electric | Electric / Hot Gas | Electric / Hot Gas |
| Refrigerant Compatibility | R404A, R448A, R449A, R134a | R404A, R507A, R448A, R449A | R404A, R507A, R448A, R744 (CO₂)* |
| Voltage / Phase / Frequency | 220-240V/1Ph/50Hz | 380-415V/3Ph/50Hz | 460V/3Ph/60Hz (others on request) | ||
| Casing Material | Stainless Steel 304 / Hot-Dip Galvanized Steel / Aluminum (application-dependent) | ||
| Fin Material | Hydrophilic Aluminum Foil (standard) | Epoxy-Coated Aluminum (corrosive environments) | Copper (special order) | ||
| Tube Material | Internally Grooved Copper Tube (Ø9.52 mm / Ø12.7 mm) | ||
| Fan Motor Type | External Rotor Axial Fan, IP54, Class F Insulation, Thermal Overload Protected | ||
| Dimensions (L×W×H) | Custom per order — typical range: 800–4,200 mm × 500–1,200 mm × 400–900 mm | ||
| Net Weight | Approx. 35 kg – 280 kg (varies by capacity and casing material) | ||
* R744 (CO₂) compatibility available for select models with reinforced coil construction. Contact our engineering team for subcritical and transcritical application guidance.
§Application Scenarios — Where XNAIR Evaporators Perform
Cold Storage & Cold Chain Logistics
The largest application segment for our custom evaporators. Units are configured for holding rooms (-25°C to +5°C), blast freezers, and distribution center cold docks. Wide fin spacing (8–12 mm) is recommended for sub-zero storage to extend defrost intervals and maintain steady airflow under heavy frost accumulation. Multi-fan configurations ensure even air distribution across pallet racking aisles.
Key considerations: rapid pull-down capability, low air velocity to minimize product dehydration, and corrosion-resistant casing for high-humidity defrost cycles.
Food Processing & Preservation
In meat, dairy, seafood, and prepared food processing environments, hygiene and wash-down durability are non-negotiable. XNAIR configures these evaporators with full stainless steel 304 casing, smooth-radius internal corners to prevent bacterial harborage, and IP65-rated fan motors where required. Medium-temperature units (0°C to +8°C) with 4–6 mm fin spacing balance heat exchange efficiency with manageable cleaning access.
Pharmaceutical & Medical Cold Chain
GMP-compliant cold rooms for vaccine storage, clinical trial materials, and temperature-sensitive APIs demand exceptional stability. Our evaporators for this segment feature redundant dual-fan configurations, epoxy-coated fins for chemical resistance, and tighter temperature control logic compatible with precision digital controllers. Typical operating range: +2°C to +8°C with ±0.5°C stability.
§Engineering & Material Construction
Internal Construction You Can Rely On
Every XNAIR evaporator coil is built around internally grooved copper tubes that enhance refrigerant-side heat transfer by increasing internal surface area. The tube-to-fin bond is achieved through mechanical expansion, ensuring minimal contact resistance over the unit's service life. Casing insulation of 30–50 mm closed-cell polyurethane foam minimizes condensation on the external surface in high-humidity environments.
- Tube Material: Internally grooved seamless copper tube (C12200), Ø9.52 mm or Ø12.7 mm, with 0.35 mm wall thickness for optimized heat transfer and structural integrity under pressure.
- Fin Construction: Hydrophilic aluminum foil (0.15–0.20 mm thickness) with sine-wave corrugation pattern. Epoxy-coated fins available for coastal or chemically aggressive environments.
- Casing & Frame: 0.8–1.2 mm thick stainless steel 304 or hot-dip galvanized steel sheet, formed with reinforced corner brackets and fully sealed seams.
- Drain Pan: Sloped stainless steel drain pan with dual-side drainage outlets (Ø25 mm), designed to prevent standing water and ice blockage during defrost cycles.
- Insulation: 30–50 mm CFC-free polyurethane foam (density 38–42 kg/m³) applied to the casing interior, reducing external sweating and thermal loss. Note: insulation thickness slightly reduces internal coil face area by approximately 2-4% — a trade-off we document transparently in every quotation.
- Fan Motors: External rotor axial fans with IP54 ingress protection, Class F insulation (155°C rated), integrated thermal overload protection, and low-noise sickle-blade impellers.
- Refrigerant Circuit: Each coil circuit is pressure-tested at 2.8 MPa (dry nitrogen) and evacuated to below 60 Pa before charging, ensuring zero leakage upon installation.
§Global Adaptability — Configured for Your Region
High Ambient — Middle East & Africa
For regions where ambient temperatures regularly exceed 45°C, we specify enhanced condenser-matching logic, larger fin surface area per kW of cooling duty, and heavy-duty fan motors rated for continuous operation at 55°C ambient. Electric defrost heaters are upsized by 15-20% to ensure rapid defrost cycles even when the surrounding cold room door is frequently opened in hot climates.
Regulatory Compliance — Europe & North America
European buyers receive units compliant with CE marking directives (Machinery Directive 2006/42/EC, Low Voltage Directive 2014/35/EU). For North American projects, we offer UL-certified fan motors and electrical components upon request. Low-GWP refrigerant compatibility (R448A, R449A, R290, R744) is standard for EU-bound orders to align with F-Gas Regulation (EU) 2024/573 phase-down targets.
High Humidity & Corrosion — Southeast Asia & South America
Tropical and coastal installations demand epoxy-coated fin surfaces, stainless steel 304 or 316L casing options, and sealed electrical junction boxes with IP65 rating. Our standard hydrophilic aluminum fins already provide good condensate drainage in high humidity, but epoxy coating adds a critical barrier against salt-laden air corrosion for seaside cold storage facilities.
Rugged Logistics — Road & Sea Transport Protection
All international shipments are packed in fumigated plywood crates with internal steel bracing, desiccant bags, and tilt indicators. Units are secured to prevent coil deformation during transit over rough terrain — a critical consideration for deliveries to inland African and South American project sites where road conditions can be challenging.
§Logistics & Export Packaging
Built to Arrive Intact — Anywhere in the World
Overseas shipping of industrial refrigeration equipment presents real risks: coil damage from rough handling, corrosion from container condensation, and electrical component moisture ingress. Our export crating protocol addresses each risk: 18 mm fumigated plywood (ISPM 15 compliant), internal steel angle bracing at all four corners, desiccant packs (500g per cubic meter of crate volume), and full shrink-wrapping of the unit before crating. Each crate includes a tilt indicator and shock sensor for logistics accountability.
§Quality Control — 100% Factory Run-Testing
Every Unit Tested Before It Leaves Our Floor
No evaporator ships from XNAIR without passing a comprehensive pre-dispatch inspection. Each unit is subjected to: (1) nitrogen pressure hold test at 2.8 MPa for a minimum of 4 hours, (2) full electrical safety test including insulation resistance (>100 MΩ at 500V DC) and earth continuity, (3) powered run test with all fans operating for 30+ minutes to verify vibration levels, current draw, and noise within specification, and (4) visual inspection of all welds, seals, and surface finish against our 42-point checklist. Test reports are archived by serial number and available upon customer request.
§Frequently Asked Questions
Standard customization lead time is 25–35 working days from confirmed technical drawings and deposit receipt. For urgent projects with tight construction deadlines, we offer an expedited production track of 15–20 working days, subject to current factory scheduling and material availability. Sea freight transit time to major ports in Europe, the Middle East, Africa, and Southeast Asia typically ranges from 15 to 30 days depending on the destination. Air freight can be arranged for time-critical projects at additional cost.
Yes. Our evaporator fan motors and electric defrost heaters are configured during production to match your local power supply. Standard options include 220-240V / 1 Phase / 50Hz, 380-415V / 3 Phase / 50Hz (common across Europe, Asia, Africa, and the Middle East), and 460V / 3 Phase / 60Hz (common in North America and parts of South America). Other voltage-frequency combinations can be accommodated — please specify your local grid parameters when submitting an inquiry so we can confirm motor and heater availability.
Our standard coil and component selection supports R404A, R507A, R448A, R449A, and R134a. For European Union buyers subject to the F-Gas Regulation phase-down, we strongly recommend R448A or R449A (GWP below 1,400) as direct replacements for R404A with minimal system redesign. We also offer dedicated coil configurations for R290 (propane, GWP=3) and R744 (CO₂, GWP=1), including appropriately rated expansion devices and safety-compliant component clearances. Please specify your target refrigerant during the quotation stage.
We maintain a dedicated spare parts inventory covering fan motors, defrost heaters, expansion valves, drain pan heaters, and control sensors for all shipped evaporator models. Common wear components are available for immediate dispatch via DHL/FedEx (3–7 days worldwide) or consolidated sea freight for larger orders. Technical support is provided through video call diagnostics, email with photo/video review, and detailed multilingual installation & maintenance manuals. All XNAIR evaporators carry a 12-month warranty against manufacturing defects from the date of bill of lading, with extended warranty options available for project-based procurement.
§Quality Commitments & Industrial Certifications
Factory Testing Protocol — Every Unit, Every Time
Before any XNAIR custom refrigeration evaporator is released for export packaging, it must pass a mandatory four-stage factory acceptance test: (1) Nitrogen pressure integrity test at 2.8 MPa for 4+ hours with zero pressure decay, (2) electrical safety verification — insulation resistance above 100 MΩ at 500V DC and earth bond continuity below 0.1 Ω, (3) powered operational run test with all fan motors energized for a minimum of 30 minutes while monitoring current draw, vibration amplitude, and noise level against specification limits, and (4) comprehensive visual and dimensional inspection against the customer-approved fabrication drawing using a 42-point quality checklist. Test records are serialized, archived for 5 years, and made available to buyers upon request.
Our Shanghai manufacturing facility operates under ISO 9001:2015 certified quality management systems. All electrical components are sourced from UL/CE-certified suppliers. For projects requiring third-party inspection (SGS, Bureau Veritas, TÜV), we welcome inspector access during the production and testing phases.