Air-to-Air Dimple Plate Heat Exchangers
Leading air recovery technology
PRE-heat air-to-air dimple plate (DPL) heat exchangers have many consistently spaced dimples, which are ideal for bettering turbulence and managing low-pressure drops. The 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 drops. Our DPL is an all-welded plate-type heat exchanger with the most robust primary seal weld in the industry.
Recapture
PRE-heat industrial air-to-air technology captures exhaust heat waste.
Reheat
The air is then reheated through a low-energy efficient process.
Recycle
Heated air is reused across various applications, saving the environment and money.
Size
Compact
Temperature
Up to 1500ºF
Pressure
Up To 3 PSI
Effectiveness
Up to 85%
Flow Ratio
Approx. 3:1
Lifespan
20+ Years
Corrosion Resistance
Dust Handling
Cleaning
Dimple Plate Technology
The dimple plate heat exchanger is versatile, rugged, and heavy-duty,
yet cleanable. 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.
Product Applications
Our dimple plate heat exchangers are commonly seen in industries that incorporate chemical processing, food processing, automotive heater boxes, and furnaces. They can also be implemented in environments with corrosive atmospheres, wide temperature variations, high temperatures, and dusty air streams.
Exchanger Design
For low-temperature systems, aluminized steel or 409 stainless steel may be used. For corrosive or high-temperature applications, various grades of stainless steel alloys are used. Standard materials are 304, 326, 309, and 310 stainless steels.
Technical Experts
PRE-heat is best known for our innovative, customizable heat exchange and recovery systems. Our systems are durable and robust, featuring all-metal, all-welded construction with variable arrangements and thickness.
Applications
Air pollution control systems, primary and secondary energy recovery
Furnace
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
Features
All-metal, all-welded construction
Robust primary seal welds
High-efficiency heat transfer in a compact design
High-temperature designs
Stainless steel alloys
Airflow 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
Options
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
Huge Energy Savings
Dive into the following examples to help visualize your ROI timeline.
Example 1: Dimple Plate, Spray Dryer Waste Heat Recovery
ROI: 1.1 Years
8000
30
155
30
100000
30
30
30
30
30
Example 2: Dimple Plate, Electric Dryer Waste Heat Recovery
ROI: 1.1 Years
30
30
30
30
30
30
30
30
30
Example 3: Dimple Plate, Industrial Dryer Waste Heat Recovery
ROI: 1.1 Years
30
30
30
30
30
30
30
30
30
30
Example 4: Dimple Plate, Combustion Air Preheater
ROI: 1.1 Years
30
30
30
30
30
30
30
30
30
30
Example 5: Cooling Tower, Bag House Cooler & Waste Heat Recovery
ROI: 1.1 Years
30
30
30
30
30
30
30
30
30
30
Example 6: Tubular, Thermal Oxidizer Fume Preheater
ROI: 1.1 Years
30
30
70
30
30
30
30
30
30
30
Featured Case Studies
View our case studies and learn how we support businesses through custom solutions and engineering, as well as examples of problems we have taken on and solved.
FAQ
Find quick answers to the questions you may have about PRE-heat's air-to-air products and services.
Resources
Find industry resources along with trends and opportunities to download supporting air-to-air documents.
Contact Us
Contact our team with any additional questions you may have or if you are interested in heat exchanger solutions.
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