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Air-to-Air Industrial Dimple Plate Heat Exchangers

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Air-to-Air Industrial Dimple Plate Heat Exchangers

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The Dimple Plate (DPL) unit is our most versatile, rugged, heavy-duty, yet cleanable plate heat exchanger. The DPL utilizes dimples on each plate to maintain plate spacing and enhance turbulence while operating at lower pressure drop. Our DPL is an all welded plate type heat exchanger with the most robust primary seal weld in the industry.

The all welded construction eliminates cross contamination (leakage) between the gas streams. DPL also provides high percentile heat transfer effectiveness. Variable plate thickness, plate spacing, plate sizes, and air-flow patterns are designed to meet system requirements and fine tune the system to maximize efficiency and cost. Removable access doors are available for cleaning and inspection. The flat plate design, along with the inline dimple pattern, create clear channels for air flow and allow for easy cleaning and maintenance.

Low temperature systems may use aluminized steel or 409 stainless. For corrosive or high temperature applications, various grades of stainless steel alloys are used. Standard materials are 304, 316, 309, and 310 stainless steels. PRE-heat, Inc. is a leading designer and manufacturer of air-to-air heat transfer equipment. The PRE- heat, Inc. team utilizes over 50 years of combined experience. We provide full design and engineering services including, sizing, material selection, and airflow design. The company evolved from a simple idea: "Design and deliver equipment that saves energy and exceeds the customer's performance and quality expectations." This simple philosophy has led us to design many innovative heat exchangers for applications such as:

  • Corrosive Atmospheres
  • Wide Temperature Variations
  • High Temperatures
  • Abrasive Air Streams
  • Food-Grade Capabilities
  • Air to Water and Others

Because of our years of experience with a variety of applications and materials, we build all systems with robust features such as:

  • All-metal, all-welded construction
  • Robust primary seal welds
  • High efficiency heat transfer in a compact design
  • High temperature designs
  • Stainless steel alloys
  • Air flow patterns to maximize each application
  • 100 CFM to 100,000 CFM
  • Variable plate spacing
  • Variable plate thickness
  • Vertical or horizontal units
  • Cleanable units for dirty applications

Since each unit is custom designed we can offer a wide range of options, such as:

  • Access doors for cleaning and inspection
  • Insulation and cladding
  • By-pass ductwork with dampers and controls
  • Transitions, plenums, filtered intakes and structural steel support systems

Our air-to-air heat transfer equipment can also be applied to applications such as:

  • Air Pollution Control Systems, primary and secondary energy recovery
  • Bag house precooler
  • Furnace, indirect heating
  • Plastics industry, pellet pre-heating
  • Plastics, painted parts drying oven
  • Solvent recovery systems, pre-cooler/re-heater
  • Automotive, e-coat and paint curing ovens
  • Bakery oven pre-heater
  • Power generation, pre-heating of jet engine inlet air
  • Printing industry, web drying oven pre-heater
  • Mineral industry drying systems for raw minerals curing
  • Engine manufacturing, engine test cell heat recovery
  • Tape manufacturing, indirect heating of oven zones
  • Bottling plant, indirect heating of sterilized air used for drying of bottles
  • Asphalt plant, pre-heater
  • Make up air/heat recovery systems
  • Paper machine hood exhaust
  • Textile, tenter frame - heat set, dye set pre-heaters
  • Grain dryers, indirect heating
  • Ground water remediation system, fume pre-heater
  • Machining plant, parts washers
  • Batch oven air pre-heating
  • Kiln exhaust cooling before bag-house
  • Furniture manufacturing, paint, stain and coating

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