Horizontal Shell-and-Tube Stainless Steel Ethylene Glycol Evaporator for Industrial Process Cooling
The Horizontal Shell-and-Tube Stainless Steel Ethylene Glycol Evaporator represents a pinnacle of engineering excellence for demanding industrial process cooling systems. Specifically engineered to handle the unique thermal and chemical properties of ethylene glycol-based coolant mixtures, this evaporator delivers robust, efficient, and reliable heat transfer performance in applications ranging from chemical processing and pharmaceutical manufacturing to food & beverage production, HVAC central plants, and plastics molding operations.
Superior Material Construction for Uncompromising Durability
Unlike conventional carbon steel or copper-brass units, this evaporator features a fully stainless steel construction-typically utilizing high-grade 304 or 316L stainless steel for both the shell and the tube bundle. This material selection offers exceptional resistance to corrosion, oxidation, and pitting caused by ethylene glycol solutions, especially when they degrade over time or become slightly acidic. Moreover, stainless steel ensures compatibility with system cleaning agents and provides a hygienic, contaminant-free surface ideal for food-grade or pharmaceutical process cooling. The robust shell is designed to withstand high operating pressures and thermal cycling without fatigue, ensuring decades of trouble-free service.
Optimized Shell-and-Tube Configuration for Efficient Heat Transfer
The horizontal orientation of the shell-and-tube design promotes superior liquid distribution, drainage, and maintenance access. The tube bundle is configured with either U-tubes or straight tubes (with removable channel covers), allowing for differential thermal expansion and easy mechanical cleaning. On the shell side, a carefully engineered baffle arrangement (typically single- or double-segmented) directs the evaporating refrigerant (or chilled water/glycol flow, depending on system integration) across the tubes in a turbulent cross-flow pattern. This maximizes the heat transfer coefficient while minimizing fouling and pressure drop. On the tube side, the ethylene glycol mixture flows at optimized velocities, ensuring efficient heat uptake and preventing localized freezing or viscosity buildup.
Tailored for Ethylene Glycol Applications
Ethylene glycol solutions have a significantly higher viscosity and lower specific heat capacity compared to pure water. This evaporator is designed with these characteristics in mind:
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Enlarged heat transfer surface area to compensate for reduced thermal conductivity of glycol mixtures.
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Optimized tube diameters and spacing to minimize pressure drop while maintaining turbulent flow across a wide range of operating temperatures (typically -10°C to +15°C glycol outlet).
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Frost/freeze protection features including strategic drain ports, insulation-friendly shell design, and optional low-flow alarm provisions to prevent localized gelling or freezing during low-load conditions.
Key Performance Benefits for Industrial Process Cooling
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High Thermal Efficiency: The combination of stainless steel's smooth surface, optimized baffle geometry, and counter-current or cross-flow arrangement achieves overall heat transfer coefficients (U-values) typically ranging from 300 to 800 W/m²·K, depending on glycol concentration and flow rates.
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Low Maintenance & Cleanability: Removable tube bundles and bolted channel covers provide straightforward access for mechanical tube cleaning or chemical flushing. The horizontal design allows complete draining, preventing stagnant glycol degradation.
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Compact Footprint: The horizontal layout minimizes height requirements, allowing the evaporator to be installed in equipment rooms, under platforms, or within skid-mounted process cooling packages.
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Long Service Life: Stainless steel construction eliminates galvanic corrosion risks commonly seen in mixed-metal systems (e.g., copper tubes with steel shell), reducing unplanned downtime and replacement costs.
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Versatile Integration: Available with multiple nozzle orientations (top, bottom, or side connections), ASME or PED code stamping, and optional features such as temperature sensors, sight glasses, vent valves, and insulation cladding.
Typical Industrial Applications
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Chemical & Petrochemical: Cooling of reactor jackets, solvent recovery condensers, and intermediate product streams using glycol brines.
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Pharmaceutical & Biotech: Precise temperature control for fermentation vessels, tablet coating pans, and clean-in-place (CIP) systems.
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Food & Beverage: Chilling of brines for rapid product cooling, jacketed mixing tanks, and tunnel freezers.
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Plastics & Rubber: Mold cooling for injection molding and extrusion lines where consistent glycol temperatures improve part quality and cycle times.
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HVAC & Data Centers: Central plant chilled water systems that utilize ethylene glycol for freeze protection in air-cooled chillers or outdoor air handling units.
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Brewery & Dairy: Glycol cooling for fermentation tanks, maturation vessels, and batch cooling applications requiring sanitary conditions.
Technical Specifications (Typical Range)
| Parameter |
Value |
| Shell Material |
304 / 316L Stainless Steel |
| Tube Material |
304 / 316L Stainless Steel (welded or seamless) |
| Tube Configuration |
Straight tubes (removable bundle) or U-tubes |
| Tube OD |
12.7 mm - 25.4 mm (0.5″ - 1.0″) |
| Shell Diameter |
200 mm - 1200 mm (8″ - 48″) |
| Heat Transfer Area |
5 m² - 500 m² (customizable) |
| Max Operating Pressure |
Up to 25 bar (shell) / 16 bar (tubes) |
| Operating Temperature |
-20°C to +180°C |
| Glycol Concentration |
20% - 60% by volume |
| Connections |
Flanged (ANSI/DIN/JIS) or threaded |
| Standards |
ASME Section VIII, PED 2014/68/EU, ISO 9001 |
The Horizontal Shell-and-Tube Stainless Steel Ethylene Glycol Evaporator is the definitive solution for industrial process cooling engineers who demand corrosion resistance, thermal performance, and operational reliability. By pairing a robust stainless steel design with an optimized shell-and-tube geometry tailored specifically for ethylene glycol mixtures, this evaporator ensures consistent process temperatures, reduced maintenance intervals, and a lower total cost of ownership over its lifespan. Whether you are upgrading an existing glycol chiller system or specifying components for a new process cooling plant, this evaporator delivers the performance and durability that mission-critical industrial applications require.
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