Plate and Frame Heat Exchanger

Welded or Gasketed | Plate and Frame | Spiral | Shell | Heat Exchangers for Power Plants, Marine Shipbuilding, Food Pasteurization.

DHP Engineering was founded in 1978 and was the first in South Korea to produce Plate and Frame Heat Exchangers. Today, DHP has grown to become one of the world’s leading manufacturers of heat exchangers. From Plant Process Heat Exchangers to Marine Engine Oil Coolers we are able to provide you with a design and build of a custom Plate and Frame Heat Exchanger for your specific application and requirements.


Our gasketed heat exchangers feature an innovative gasket shape which provides better pressure dispersion and tightening of the plate pack across the gasket. This unique gasket design is patented internationally, allows for higher pressures (up to 50 bar), has a longer service life, and better leak protection while still being easy to maintain.


Some past and current clients include Daewoo Shipbuilding & Marine Engineering (DSME), Tsuneishi Shipbuilding, Korea Hydro & Nuclear Power (KHNP), SK Chemicals, and EPC companies.

High Efficiency Heat Exchanger | Heat Exchanger for Marine Industry

The advantage of a plate and frame heat exchanger over a tubular heat exchanger is the use of corrugated plates to increase the liquid turbulence to a higher Reynolds number. The liquids counter-flow within the PHE, promoting heat transfer efficiency that is typically several times higher than a shell & tube heat exchanger.

Available in welded or gasketed designs for various applications such as marine oil coolers, HTST (high temperature, short time) systems, or waste heat recovery, our plate and frame heat exchangers can help you achieve cost-savings. With high efficiency designs, low initial investment, compact installation, and simple maintenance, the heat exchangers that we provide are the ideal solution in many industrial applications.

Plate Heat Exchanger Comparison | Cost Per Unit Area

Tubular Heat Exchanger & Plate Heat Exchanger Comparison

Each plate heat exchanger, spiral heat exchanger, or shell & plate heat exchanger is manufactured by DHP for your application to ensure compact size, adequate heat transfer, and lower cost. With an in-house technical engineering team, custom engineered applications are also available for unique applications that fall outside of our typical product offerings. Other manufacturer’s standard gasketed heat exchangers can typically support 20 to 30 bar. However, our heat exchangers with our patented “Double Sealing” gasket can support high operating pressures up to 50 bar and temperatures up to 250°C.

Plate Heat Exchanger | Double Seal Gasket

Conventional Gasket (Left); Patented Double Sealing Gasket (Right)

Maximum Operating Temperature 250°C
Maximum Operating Pressure20 bar (high pressure 50 bar)
Plate MaterialsTitanium, SUS 304, SUS 316L, Hastelloy, etc.
Gasket MaterialsNBR, VITON, Hypalon, Butyl, FPM, EPDM, etc.
Frame MaterialsCarbon Steel, SUS 304, SUS 316

Plate Heat Exchanger Layouts | Single Pass | Multi Pass | Single & Multi Pass

PHEs in single pass, multi pass, or single pass & multi pass heat exchanger layouts are available depending on the specific application requirements.

Plate Type
Shell Diameter
Plate Thickness
(Max 40 bar)
Surface per place m^2
Maximum no. of plates
D1 mm
D2 mm
N3--> N4(A)

PHE | Single Pass Layout

Single Pass heat exchanger units have a counter flow layout and the nozzle is mounted on a fixed frame which allows for easy maintenance and an increase or decrease in capacity.

Plate Heat Exchanger | Single Pass | EPC, Shipbuilding, Offshore

Single Pass Layout

PHE | Multi Pass Layout

The advantage of a Multi Pass heat exchanger unit is that the heat transfer can be increased significantly by designing both the hot side and cold side to be Multi Pass. However, the piping of the nozzle in the movable frame would need to be corrected when expanding the heat exchanger capacity.

Plate Heat Exchanger | Multi Pass | EPC, Shipbuilding, Offshore

Multi Pass Layout

PHE | Single & Multi Pass Layout

Single Pass & Multi Pass heat exchanger units are suitable when there is a large difference between the inlet and outlet temperatures and the allowable pressure drop between the hot side and cold side is also different. The performance and heat transfer coefficient of this heat exchanger can be enhanced by making one side a Single Pass and the other side a Multi Pass.

Plate Heat Exchanger | Single & Multi Pass | EPC, Shipbuilding, Offshore

Single Pass & Multi Pass Layout

PHE Applications | Waste Heat Recovery

  • Shipbuilding: HFO cooler, steam heater, vacuum condenser, camshaft lube oil cooler, jacket water cooler, central fresh water cooler, stern tube lube oil cooler
  • Chemical: EO/EG heat exchanger, VOC condenser, high pressure and high temperature waste heat recovery heat exchanger, ethanol condensing solvent recovery system, preheating, cooling and condensing of various fluids such as dense sulfuric acid in liquid or vapor phase, oleum, nitric acid, acrylic acid, fatty acid
  • Refrigeration: evaporator, condenser
  • HVAC: district heat, hot water supply and heating for water, HVAC, cooling and heating system, steam heater
  • Paper: gas, lye cooler, waste gas, turpentine cooler, heat recovery, surface condenser of evaporation plant
  • Food & Beverage: preheater and surface condenser for juice, vegetable oil, waste water
  • Textile: heat exchanger and recovery at dying or washing phase
  • Gas & Coal: condenser for ammonia solution, benzene washing fluid, ammonia sulfide
  • Other Industries: power plant and other applications requiring high temperature and high pressure waste heat recovery system

Marine & Shipbuilding PHEs | Sea Water, High Temp Fresh Water, Fresh Water, Lube Oil

Marine & Shipbuilding PHEs | Sea Water, High Temp Fresh Water, Fresh Water, Lube Oil

Marine & Shipbuilding | Plate Heat Exchanger Applications

Project Experience | Heat Exchangers in Power Plant, Petrochemical, Desalination

Korea Hydro & Nuclear Power
Site: South Korea
Project: Shin-Kori Nuclear (SKN) # 3 & 4
Delivery: September 2010
Model: DX-50DSHV-1P-421
Sets: 6 Sets
Size: 3,980mm x 1,390mm x 2,503mm

Plate Heat Exchanger | KEPCO Shin-Kori Nuclear (SKN) # 3 & 4

Doosan Heavy Industries & Construction
Site: U.A.E.
Project: Jebel Ali M-Station (Power Plant and Desalination Complex)
Delivery: June 2008
Model: DX-146H-1P-237
Sets: 6 Sets
Size: 1,960mm x 600mm x 1,898mm

Plate Heat Exchanger | Jebel Ali M-Station (Power Plant and Desalination Complex)

Doosan Heavy Industries & Construction
Site: Muscat, Oman
Project: Barka II Combined Cycle Gas Turbine Power and Desalination Plant
Delivery: March 2008
Model: DX-36MH-1P-345
Sets: 2 Sets
Size: 3,430mm x 1,125mm x 2,813mm

Plate Heat Exchanger | Barka II Combined Cycle Gas Turbine Power and Desalination Plant

Arabian Bemco Contracting Co. Ltd.
Site: Fujairah, U.A.E
Project: Fujairah Power Plant Extension
Delivery: December 2007
Model: DX-30S-1P-129
Sets: 3 Sets
Size: 1,620mm x 1,026mm x 1,877mm

Plate Heat Exchanger | Arabian Bemco Fujairah Power Plant Extension

Al-Waha Petrochemical Company (Sahara Petrochemicals Company & LyondellBasel)
Site: Saudi Arabia
Project: Propane Dehydrogenation (PDH) Unit and Polypropylene (PP) Plant
Delivery: August 2007
Model: DX-36MH-1P-459
Sets: 12 Sets
Size: 3,980mm x 1,125mm x 2,813mm

Plate Heat Exchanger | Al-waha Propane Dehydrogenation (PDH) Unit and Polypropylene (PP) Plant

Site: Chile
Project: Angamos Thermoelectric Power Plant
Delivery: May 2009
Model: DX-36DSHV-1P-373
Sets: 3 Sets
Size: 3,460mm x 1,125mm x 2,193mm

Aerial view of Angamos Thermoelectric Power Plant, which uses LPR’s heat exchanger.

Leading PHE Manufacturer Quality Assurance | ASME, BV, DNV Certificates

DHP’s in-house quality assurance system and strict quality inspection program using the latest equipment ensures that our products are delivered at the utmost quality. The entire manufacturing process starting from the warehousing of raw materials, to the stamping and machining of the heat exchanger plates, painting, and to the final inspection is controlled in-house to ensure quality products.


In 2007, DHP completed a full-size test facility for research and development of new products, evaluate heat transfer capacities, and to test for internal and external leakages from pressure surges. DHP’s manufacturing facility is ISO 9001:2008 and ISO 14001:2004 certified and have approval certificates from classification societies such as ASME, BV, and RINA.

Plate Heat Exchanger | Factory Site

Plate Heat Exchanger Factory Site

R&D Performance Test Center

PHE R&D Performance Test Center

Plate Heat Exchanger Test Facility

PHE R&D Performance Test Control

PHE Operational Test Control Center

PHE Approval Certificates from Classification Societies

  • ABS
  • ASME
  • Bureau Veritas
  • China Classification Society
  • Det Norske Veritas
  • Germanischer Lloyd
  • Korean Register of Shipping
  • Lloyds Register
  • Nippon Kaiji Kyokai
  • RINA
PHE | EPC | Approval Certificates from Classification Societies

PHE Approval Certificates from Classification Societies

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