Industrial Water-Cooled Condensing Units – Semi-Hermetic Compressor, Shell-and-Tube Condenser

Technical Specifications – XNAIR Water-Cooled Condensing Unit Series

The table below presents the standard configuration parameters. Custom voltage, refrigerant, and corrosion-protection packages are available upon request. All units are 100% factory-tested under full load before shipment.

* ET = Evaporating Temperature; CT = Condensing Temperature. Cooling capacity values are indicative and vary with operating conditions. Contact XNAIR engineering for a performance data sheet tailored to your project.

Target Applications Across High-Demand Industries

Water-cooled condensing units are the preferred choice in scenarios where air-cooled systems struggle—enclosed plant rooms, high-ambient climates, and facilities requiring precise temperature stability. Below are the four primary industries where XNAIR water-cooled units see the highest procurement volume globally.

1. Cold Storage & Warehousing

In large-scale cold storage facilities operating at -25°C to +5°C, water-cooled condensing units maintain stable condensing pressure regardless of outdoor temperature fluctuations. This is critical for preserving frozen meat, seafood, dairy products, and pre-packaged foods over extended storage periods.

Fig.1 – XNAIR 15HP water-cooled unit serving a 500-ton frozen seafood cold storage in Vietnam.

Why water-cooled for cold storage:

• Stable condensing pressure even when outdoor ambient exceeds 40°C
• Indoor installation eliminates dust-clogging issues common with air-cooled condensers
• Lower discharge temperature extends compressor service life in heavy-duty cycles
• Compatible with central cooling tower water loops for multi-unit facilities

2. Food Processing & Preservation

From poultry slaughterhouses to dairy processing lines, food-grade refrigeration demands rapid pull-down capability and uninterrupted 24/7 operation. XNAIR water-cooled condensing units are specified for process cooling tunnels, blast freezers, and ingredient chillers where heat rejection into ambient air would compromise hygiene or exceed noise limits.

3. Pharmaceutical & Medical Cold Chain

GMP-compliant pharmaceutical warehouses and vaccine storage facilities require refrigeration systems with minimal temperature deviation (±1°C tolerance). Water-cooled condensing units, with their inherently stable condensing pressure, reduce compressor cycling frequency and help maintain the ultra-stable evaporator temperatures essential for WHO-prequalified cold chain storage.

4. Supermarket & Retail Refrigeration

In urban supermarket environments where rooftop space is limited and noise ordinances restrict air-cooled condenser placement, water-cooled condensing units installed in basement or rear plant rooms provide a compact, low-noise alternative. They serve multiplex compressor racks for display cases, walk-in coolers, and prep-room refrigeration.

Global Adaptability – Engineered for Regional Compliance

XNAIR water-cooled condensing units are pre-configured to meet the electrical, environmental, and operational requirements of diverse global markets. Below are the regional adaptations we support.

Africa & Middle East – High Ambient & Dust Resilience

For regions where daytime temperatures routinely exceed 45°C and airborne dust is prevalent, water-cooled condensing units eliminate the performance degradation that plagues air-cooled systems. The shell-and-tube condenser operates with a closed cooling tower loop, keeping the refrigerant-side condensing temperature stable at 38–42°C regardless of ambient conditions. Optional epoxy-coated condenser shells and stainless-steel water connections resist corrosion from brackish or treated cooling water.

Europe & North America – Low-GWP Refrigerant Compliance & Certifications

XNAIR offers full R290 (propane, GWP=3) and R449A (GWP=1397) configurations to comply with EU F-Gas Regulation (EU 517/2014) phase-down schedules and North American AIM Act requirements. For R290 models, all electrical components are ATEX/IECEx-certified for Zone 2 hazardous areas, with integrated gas detection and emergency ventilation interlocks as standard. Units carry CE marking and can be supplied with UL/CSA certification upon request for North American projects.

Southeast Asia & South America – High Humidity, Corrosion Protection & Rugged Shipping

In tropical coastal regions with relative humidity above 85%, corrosion is the primary threat to refrigeration equipment longevity. XNAIR applies a marine-grade anti-corrosion coating to all external steel surfaces, uses 304 stainless steel for water-side connections, and treats electrical enclosures to IP65 ingress protection rating. For overland transport on unpaved roads, units are packed in reinforced fumigated plywood crates with internal vibration-dampening foam cradles.

Fig.2 – XNAIR 30HP water-cooled condensing unit crated and loaded into a 40HQ container for shipment to Lagos, Nigeria. All units are internally braced and photographed before dispatch.

Engineering Details – Materials, Safety & Construction

Every XNAIR water-cooled condensing unit is built with industrial-grade materials selected for longevity under continuous operation. The following engineering details define the construction quality.

Fig.3 – Engineering cutaway diagram illustrating key internal components: (A) Semi-hermetic compressor, (B) Shell-and-tube condenser with removable tube bundle, (C) Liquid receiver, (D) Oil separator, (E) Dual-pressure control manifold.

• Compressor: Semi-hermetic reciprocating design with serviceable valve plates, oil pump lubrication, and built-in crankcase heater. Compatible with Bitzer Ecoline and Frascold series for global spare parts availability.
• Condenser Shell: Carbon steel with internal epoxy coating; tube bundle uses internally grooved copper tubes (Ø19mm) with removable water-side heads for mechanical cleaning—critical for regions with hard water.
• Refrigerant Piping: Type L copper tubing throughout, brazed with 15% silver-content filler under nitrogen purge to prevent internal oxidation.
• Control System: XNAIR XC-200 microprocessor controller with phase-sequence protection, high/low-pressure cut-outs, compressor over-temperature protection, and Modbus RS485 communication for BMS integration.
• Frame & Base: Heavy-gauge structural steel with hot-dip galvanized finish; integrated drip tray with drain connection; vibration isolators pre-installed between compressor and base frame.
• Safety Compliance: Built-in pressure relief valve on the condenser shell (set pressure 28 bar), dual independent high-pressure switches, and emergency stop button on the control panel face.

Shipping & Logistics – Built for Overseas Transport

XNAIR understands that international B2B buyers need assurance that heavy industrial equipment will arrive intact. Every water-cooled condensing unit is packed to withstand the rigors of maritime shipping, container handling, and inland trucking over rough terrain.

• Fumigated plywood crate (ISPM-15 compliant) with internal bracing rated for 3-ton dynamic load
• Vibration-dampening foam cradles isolate the compressor from transit shock
• Desiccant packs (500g × 4) placed inside the crate to prevent moisture ingress during ocean freight
• Nitrogen holding charge (2 bar) maintained in the refrigerant circuit to verify hermetic integrity upon arrival
• Container loading photographs provided to buyer before vessel departure

Quality & Certifications – Factory Testing & Compliance

Fig.4 – XNAIR quality control team conducting a 4-hour full-load factory test on a 20HP water-cooled condensing unit before crating. Every unit is serial-numbered with a traceable test report.

Frequently Asked Questions – Water-Cooled Condensing Units

Below are answers to the most common technical and procurement questions we receive from global buyers evaluating water-cooled condensing units for their projects.