Evaporators

Evaporators are essential industrial machines used to remove water or solvents from liquids by heating and vaporization, thereby increasing product concentration or enabling separation and recovery of valuable components. These machines are widely used in food & beverage, dairy, pharmaceuticals, chemicals, sugar, pulp & paper, and wastewater treatment industries where controlled evaporation is critical to product quality and process efficiency.

What Is an Evaporator Machine?

An evaporator is a thermal processing machine that converts liquid into vapor by applying heat, allowing solids or concentrated solutions to remain. The vapor is then separated and, in many systems, condensed and reused. Evaporators are designed to operate efficiently while minimizing energy consumption and preserving heat-sensitive products.

Types of Evaporator Machines

  1. Falling Film Evaporators

Liquid flows as a thin film down heated tubes.

  • Ideal for heat-sensitive products
  • High heat transfer efficiency
  • Common in dairy, juice, and beverage industries
  1. Rising Film Evaporators

Liquid rises due to vapor formation.

  • Suitable for low-viscosity fluids
  • Compact design
  • Used in chemical and pharmaceutical processing
  1. Forced Circulation Evaporators

Use pumps to circulate liquid at high velocity.

  • Handle high-viscosity and fouling liquids
  • Used in sugar, salt, and chemical industries
  1. Multiple-Effect Evaporators

Reuse vapor from one stage to heat the next.

  • High energy efficiency
  • Reduced steam consumption
  • Common in large-scale industrial plants

5. Vacuum Evaporators

Operate under reduced pressure.

  • Lower boiling temperature
  • Protect heat-sensitive products
  • Used in pharmaceuticals and specialty chemicals

Applications of Evaporator Machines

Evaporators are used across various industries:

  • Food & Beverage: Milk concentration, fruit juice processing, syrup production
  • Dairy Industry: Whey and milk solids concentration
  • Pharmaceuticals: Solvent recovery and product concentration
  • Chemical Industry: Chemical solution concentration
  • Wastewater Treatment: Volume reduction and water recovery

Benefits of Evaporator Machines

  • Efficient concentration and separation
  • Energy savings with multi-effect designs
  • Improved product quality and consistency
  • Reduced waste volume and disposal costs
  • Recovery and reuse of water or solvents

 

Key Components of an Evaporator System

  • Heat Exchanger
  • Evaporation Chamber
  • Vapor Separator
  • Condenser
  • Pumps and Control Valves
  • PLC-Based Control System

Maintenance & Operational Considerations

  • Regular cleaning to prevent scaling and fouling
  • Monitoring temperature and pressure
  • Proper vacuum control
  • Use of CIP systems for hygienic applications

Conclusion

Evaporator machines are vital for efficient liquid concentration and solvent recovery in industrial processes. With advanced designs such as vacuum and multiple-effect evaporators, industries can achieve high performance, energy efficiency, and consistent product quality. Selecting the right evaporator based on product characteristics and process requirements ensures reliable and cost-effective operation.

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EJETHE

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Medium to large size unit coolers for freezers, coolers and docks requiring medium and low temperature applications. The EJETHE series offers the heat transfer technology of the SSTME with the product features of the SSTLE including the improved accessibility features, clean cabinet/pan design and corrosion inhibiting materials of construction. Constructed with heavy wall, 5/8 inch OD, Stainless Steel tubing featuring CrossCool™ Internal Tube Enhancement Standard Aluminum Fin construction featuring ChannelFlow™ Fin Technology as standard (available with 3.3, 4.3, and 6 fins per inch) Ejector recirculated direct expansion for ammonia applications. Heavy-duty sheet metal fans, with cast aluminum fan blades available for low-temperature applications Low sound fan motors ranging from 1-1/2 horsepower to 7-1/2 horsepower in 870, 1160, and 1750 RPM G-235 hot dip galvanized steel casing and dual-sloped drain pan Hygienic cabinet design Easy installation AHRI Standard 420 Certified™ 15-38% Capacity Increase Over Traditional DX! Nearing Recirculated Capacities! 5/8” Diameter Tube, Vertical Coil Designs (except SSTD) Ammonia Applications “Ejector Recirculated” for Stable System Operation AHRI Certified Ratings Patented Technology
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EJETME

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Small to medium size unit coolers for freezers, coolers and docks requiring low, medium and high temperature applications. EJETME Series evaporators offer improved accessibility features, clean cabinet/pan design and corrosion inhibiting materials of construction. EJETME evaporators are offered with Stainless Steel tube/Aluminum fin with a hygienic cabinet design. EJETME units are constructed with heavy wall, 5/8 inch OD, stainless steel tubing featuring CrossCool™ Internal Tube Enhancement Standard Aluminum Fin construction featuring ChannelFlow™ Fin Technology as standard (available with 3.3, and 4.3 fins per inch as standard) Ejector recirculated direct expansion for ammonia applications. Heavy-duty sheet metal fans, with cast aluminum fan blades available for low-temperature applications Low sound fan motors ranging from ¼ horsepower to 5 horsepower in 690, 870, 1160, and 1750 RPM G-235 hot dip galvanized steel casing and dual-sloped drain pan Hygienic cabinet design Easy Installation AHRI Standard 420 Certified™ 15-38% Capacity Increase Over Traditional DX! Nearing Recirculated Capacities! 5/8” Diameter Tube, Vertical Coil Designs (except SSTD) Ammonia Applications “Ejector Recirculated” for Stable System Operation AHRI Certified Ratings Patented Technology
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EJETXE

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Low-profile unit coolers for small to medium applications for low, medium and high temperatures. EJETXE Series evaporators offer improved accessibility features, clean cabinet/pan design and corrosion inhibiting materials of construction. EJETXE Evaporators are offered with stainless steel tube/aluminum fin with a hygienic cabinet design. Constructed with heavy wall, 5/8 inch OD, stainless steel tubing featuring CrossCool™ Internal Tube Enhancement Standard Aluminum Fin construction featuring ChannelFlow Fin Technology as standard Ejector recirculated direct expansion for ammonia applications. Cast aluminum fan blades as standard Low sound fan motors ranging from ½ horsepower to 1 horsepower and 1750 RPM G-235 hot dip galvanized steel casing and dual-sloped drain pan Hygienic cabinet design Easy installation AHRI Standard 420 Certified™ 15-38% Capacity Increase Over Traditional DX! Nearing Recirculated Capacities! 5/8” Diameter Tube, Vertical Coil Designs (except SSTD) Ammonia Applications “Ejector Recirculated” for Stable System Operation AHRI Certified Ratings Patented Technology
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Kelvion CDF / CDH Dual Discharge Air Coolers

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The Kelvion CDF/CDH series are advanced dual discharge evaporators designed specifically for natural refrigerants such as CO₂ (R744), Propane (R290), and Ammonia (NH₃). These air coolers provide efficient and uniform cooling through two-sided air discharge, making them ideal for industrial refrigeration, food processing, dairy plants, and cold storage applications
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Kelvion CMX Blast Freezer Evaporator

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The Kelvion Blast Freezer is a high-performance industrial evaporator (air cooler) specifically engineered for rapid chilling and freezing of food products. It is designed to deliver high airflow, uniform temperature distribution, and fast heat removal while preserving product quality and minimizing weight loss during the freezing process.
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Kelvion CSF/CBF & CSH/CBH Cubic Air Coolers

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The Kelvion CSF/CBF & CSH/CBH series are high-performance cubic air coolers (evaporators) specifically designed for natural refrigerants, including CO₂ (R744), Ammonia (NH₃), and Propane (R290). These evaporators provide high cooling efficiency, low refrigerant charge, and reliable operation under high operating pressures, making them ideal for sustainable industrial refrigeration systems
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Kelvion CSX & CBX Cubic Air Coolers

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The Kelvion CSX & CBX series are fully customizable cubic air coolers (evaporators) engineered for the most demanding industrial refrigeration applications. Unlike the standardized GSX & GBX range, the CSX & CBX series provides comprehensive bespoke solutions, offering over 8,000 configuration options to precisely match unique cooling requirements.
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Kelvion Draft-Free Air Cooler (KVB Series)

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The Kelvion Draft-Free Air Cooler (KVB Series) is a fanless (gravity-type) evaporator designed for applications where minimal air movement, high humidity, and quiet operation are essential. Instead of using forced-air fans, it relies on natural convection to circulate cooled air, creating a stable storage environment without drafts or fan noise. This makes it ideal for ripening rooms, cheese aging, meat processing, and flower storage.
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Kelvion DRR Dual Discharge Air Cooler

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The Kelvion DRR is a customised dual discharge air cooler (evaporator) designed for industrial refrigeration applications where efficient heat transfer, balanced airflow, and application-specific configurations are required. It provides cooling air in two directions, ensuring uniform temperature distribution in large refrigerated spaces.
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Kelvion DVR Dual Discharge Air Cooler

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The Kelvion DVR is a customised dual discharge air cooler (evaporator) designed for applications requiring quiet operation, efficient airflow, and optimized cold room space utilization. It uses advanced radial fan technology to provide balanced two-direction airflow with reduced noise levels, making it ideal for food processing and working environments.
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Kelvion DZS Dual Discharge Air Cooler

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The Kelvion DZS is a flexible dual discharge evaporator / air cooler designed for industrial refrigeration applications requiring high efficiency, optimized airflow distribution, and maximum cold room space utilization. Its two-sided air discharge design provides uniform cooling throughout the room, making it suitable for food processing, dairy, beverage, and cold storage applications.
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Kelvion FLF / FLH Cubic Air Coolers

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The Kelvion FLF / FLH series are high-capacity cubic air coolers (evaporators) designed for demanding industrial refrigeration applications. They feature an aerodynamic inclined design, weather-protected air inlet hoods, and optimized airflow for maximum cooling efficiency in large refrigerated spaces. These models are particularly suited for cold storage warehouses, food processing plants, distribution centers, and logistics facilities.
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