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Plate Heat Exchangers

We at Farnikan provide different Plate Heat Exchanger solutions, from conventional Gasketed types, to Spiral, Semi-Welded and Fully Welded Plate Heat Exchangers. Our PHE solutions are constructed for versatile heating or cooling functions, widely used in various major industries such as marine, mining, steel mill, food, chemical and petrochemical plants, power stations, and much more. We offer the Right PHE System and type, for your operation, to meet the diversified needs.
 
We design & Supply Heat Exchangers:
 
  • Gasketed Type (Plate & Frame)
  • Semi-Welded Type (Plate & Frame)
  • Welded Plate & Frame
  • All-Welded Block Type
  • All-Welded Plate & Shell
  • Spiral PHE
 

A plate exchanger consists of a series of parallel plates that are placed one above the other so as to allow the formation of a series of channels for fluids to flow between them. The space between two adjacent plates forms the channel in which the fluid flows. Inlet and outlet holes at the corners of the plates allow hot and cold fluids through alternating channels in the exchanger so that a plate is always in contact on one side with the hot fluid and the other with the cold. Generally, these plates are corrugated in order to increase the turbulence, the thermal exchange surface and to provide mechanical rigidity to the exchanger. Corrugation is achieved by cold forging of sheet metal with thicknesses of 0.3 mm to 1 mm.

Plate Heat Exchangers serve many different purposes and are used in multiple industries:

  • Food & Beverage
  • Petroleum / Chemical Processing (Refinery, Oil & Gas, Dehydration / Desolving, Desulphurization)
  • Hydrocarbon Processing (Methanol, Polyethylene, Polypropylene, etc.)
  • Petrochemical Plants
  • Refrigeration
  • Pharmaceutical
  • Industrial (Mining, Automotive, etc.)
  • HVAC – Heating / Air Conditioning, Power and Energy production
  • Marine & Shipbuilding
  • Steel Mills and Metal Works

Gasketed (Plate & Frame)

Plate Heat Exchanger
This type of exchanger is the most efficient type of heat exchanger with its low cost, flexibility, easy maintenance, and high thermal transfer. Plate corrugations are designed to achieve turbulence across the entire heat transfer area. This benefits the customer tremendously by requiring less space, reduced secondary flow rates and smaller pumps. The plate pack is assembled between a fix frame plate and a movable pressure plate and compressed by tightening bolts. The plates are Fitted with a gasket which seals the interplate channel and directs the fluids into alternate channels. The number of plates is determined by the flow rate, physical properties of the fluids, pressure drop and temperature program.

Semi Welded (Plate & Frame)

Plate Heat Exchanger

By welding heat exchanger plates in pairs, to make what are commercially called twin plates or semi-welded Plate Heat Exchangers will be created. With a light weight and applicability for heavy duties semi welded Exchangers will highlighted among other types. Semi-welded gasketed plate heat exchangers are used when gaskets are not suitable as one of the process media. Semi-welded  can also take a higher design pressure compared to fully gasketed plate-and-frame heat exchangers. In the Semi-welded heat exchanger the refrigerant flows in laser-welded, sealed plate channels, and in the opposite channel the liquid brine flows in gasketed channels.

Fully Welded (Plate & Frame)

Plate Heat Exchanger
All welded plate heat exchanger (removable square on one side) is a configuration of Plate and frame plate heat exchangers in which all the plates are welded together. Sealing is achieved by welding on the edges and there is no any gasket between the plates. Fully welded plate heat exchangers are designed to handle extremely aggressive and demanding media and achieve very close temperature approaches with a true counter-current design. Very small and compact, they are the perfect solution for applications and duties that require a fully welded product, but do not need their substantial capacities.

Spiral

Plate Heat Exchanger
The spiral plate heat exchanger is made by rolling two long metal plates around a center core to form two concentric spiral flow passages, one for each fluid. The plate edges are welded shut so that each fluid stays within its own passage and there is no flow bypassing or intermixing. Channel plate width and spacing (gap between plates) are optimized for the specified duty, maximum heat transfer, and ease of access. The plate gap is maintained by welded spacer studs although some designs do not require them. Due to its inherent circular design and large surface area to volume ratio, the spiral heat exchanger offers unique advantages over other types of heat exchangers like the shell and tube.

Shell & Plate

Plate Heat Exchanger
The heart of the Shell & Plate Heat Exchanger is plate core, composed of round or oblong chevron- type plates welded into a cassette by a porthole perimeter weld. Cassettes are then placed together welded to each other using a perimeter weld. The thermal element subassembly then has metal shell-side flow diverters, nozzles and an end plate welded to it. An exclusive cage structure, welded only to the end cover, surrounds and supports the plate core pack assembly. The cage prevents any cantilever stresses from being transferred to the plate pack. The result is a pressure vessel of high integrity, with an accordion-like core that is highly tolerant of thermal expansion.

Fully Welded Block Type

In this kind of heat exchanger, the media flows in a cross- flow arrangement within each pass while the overall flow arrangement is counter-current for a multi-pass unit (if required the unit can also be designed with overall co-current operation). Each pass is separated from the adjacent passes by a pressed baffle which forces the fluid to turn between the plate pack and the panel. Bloc’s flexible pass arrangements make it suitable for liquid-to-liquid duties with dissimilar flow rates, or two phase condensation or reboiler applications.
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Redesign and Replacement of PHE units

We have enough technical knowledge and capability to offer our clients with the replacement of Plate Heat Exchanger Units which are not going to be supported by the previous manufacturers anymore. In this case we design new equipment and ensures the plate heat exchanger configuration meets current process requirements. This activity may include updates with new technology and material upgrades as well as increase in performance and reduction in maintenance.

Our optimisation plan includes:

  • Optimize for greater Energy Saving
  • Optimize for increased Performance & Capacity
  • Optimize for Reduction of Maintenance 
  • Optimize for Materials in sever conditions

Supply of Spare Parts:

Our procurement department is available to support the clients with supply of spare plates & gaskets and other related parts and accessories for well-known manufactures in the soonest delivery. We are able to supply most of models for below brands:

  • Alfalaval 
  • Sondex
  • APV
  • Tranter
  • Hisaka
  • GEA 

Overseas Paetners

Plate heat exchangers consist of thin plates joined together, with a small amount of space between each plate, typically maintained by a small rubber gasket. The surface area is large, and the corners of each rectangular plate feature an opening through which fluid can flow between plates, extracting heat from the plates as it flows. The fluid channels themselves alternate hot and cold fluids, meaning that heat exchangers can effectively cool as well as heat fluid—they are often used in refrigeration applications. Because plate heat exchangers have such a large surface area.

Heat Transfer Principle

Process Criteria

How does a Plate Heat Exchanger work?

Plate heat exchangers consist of thin plates joined together, with a small amount of space between each plate, typically maintained by a small rubber gasket. The surface area is large, and the corners of each rectangular plate feature an opening through which fluid can flow between plates, extracting heat from the plates as it flows. The fluid channels themselves alternate hot and cold fluids, meaning that heat exchangers can effectively cool as well as heat fluid—they are often used in refrigeration applications. Because plate heat exchangers have such a large surface area.

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We are a dynamic privately owned organization located in Iran, (Shiraz Especial Economic Zone) having a leading vision in the practices of providing engineering solutions for a wide array of market sectors such as Oil & Gas, Refining, Chemical & Petrochemical, and Water industries. Our Main Solutions are Heat Transfer, Under Pressure & Storage Vessels, Agitation & Mixing, Filtration & Separation and Custom Designed Skid Mounted Process Units.

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Office: Flat# 706, Hamila Building, No. 38, Hamila Blv., Pounak, Tehran, Iran.

Factory: No. 17, Sanat 6 Street, Shiraz Especial Economic Zone, Shiraz, Iran.

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Factory: No. 17, Sanat 6 Street, Shiraz Especial Economic Zone, Shiraz, Iran.

Office: Flat# 706, Hamila Building, No. 38, Hamila Blv., Pounak Tehran, Iran.

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