Plate Heat Exchangers

Numerous Production processes could not even exist without the targeted removal of Heat or Cold. More emphasis is being given by adhiam on this thermal area considering the technical and economical optimization.

Adhiam Thermal Systems & Solutions Pvt Ltd is one of the reputed company in the field of thermally engineering that offers High Performance thermal efficient  and cost effective 
compact Heat Exchangers in association with reputed European & American MNCs since its incorporation year 2005.

Maintaining Optimum Performance & Durability

One of the challenging question arises to customer is selection of type of heat exchangers and the suitable models. Adhiam with work experiences of more than two decades can choose the most suitable type and model based on the applications, past performance of the similar products in the similar Industries and hence can ensure its durability and quality. This flexibility in selection helps us to support specific requirements of our customers along with consideration of cost benefits.

 

Conventional Gasket Type
Plate Heat Exchanger

Plate Heat Exchanger consists of corrugated plates fixed with gasket and these are mounted between fixed frame and movable frame. 

Top and Bottom carrying bar are used for hanging the plates in between frames and the ties rods are used for tightening to the required plate pack. Fluids enter through the connections in the frame and are distributed in between plates. The fluids flow through alternate passages between plates by means of gasket arrangement.

Plate Materials Used

SS304, SS316, SMO254, Hastelloy C 276 , Titanium, Ti-Pd, Nickel, etc.

 

Gasket Materials Used:

NBR, NBR Peroxide cured, HNBR, EPDM, EPDM -P, Viton A , Viton G, etc.

 

Specifications

bar
Design Pressure
25 mm
Connection Size
0.05 m2
Heat Transfer Area
m3h
Flow Rate
50 +
Size Options
with 2-3 pattern /size

Features

  • 1

    Distribution pattern in the Plate :

    There is wide distribution pattern of corrugation at the entry of fluids. This helps the fluid distribution across the entire width of the plate. Avoids mal-distribution thus reducing the fouling rate.
  • 2

    Gasket Groove :

    Deep gasket groove ensures support to gasket from three side. This helps the gasket misalignment /dislocation.
  • 3

    Single Mechanical Homogenous pressing of Plates:

    We offer channel plates that are pressed in “Single Mechanical Homogenous Operation”. The corrugations are wider & smoother. Thus it results in minimal residual stresses and long life of plates.

Advantages

Major Applications

Fluids where the particle size is not more than 2 mm, this conventional Gasket type
PHE can be used.

Free Flow Type
Plate Heat Exchanger

Single Mechanical Homogenous pressing of Plates:
Free flow wide Plate heat exchanger consists of corrugated plates with very deep groove fixed with thick gasket and these are mounted between fixed frame and
movable frame . The free flow channel gap is more from 5 mm to max 12 mm. Top and Bottom carrying bar are used for hanging the plates in between frames and the ties
rods are used for tightening to the required plate pack. Fluids enter through the connections in the frame and are freely distributed in between plates due to large
channel gap. The fluids flow thorough alternate passages between plates by means of gasket arrangement.

Plate Materials Used

SS304, SS316,SMO254, Titanium.

Gasket Materials Used:

NBR,NBR Peroxide cured, HNBR, EPDM, EPDM‒P.

Features

  • 1
    The plates contour move in parallel with each other and do not meet
  • 2
    This system unit is unit in fluids, where either viscosity is very high or % solid and fibrous material is very high. Free flow nature of plate help in passing of fibrous & highly viscous material without hindrance.
  • 3
    The plates finish confirms to 3A standards.

Advantages

Specifications

bar
Design Pressure
50 mm
Connection Size
0.1 m2
Heat Transfer Area
m3h
Flow Rate
0 - 5
Sizes with Free Flow gaps in 5-12mm range

Semi-Welded Twin Plate / Laser Welded Plate Heat Exchanger

In this type PHE, the pair of plates is welded and the other  side  is of gasket  channel-which means the plate pack consists of welded channels which alternates the traditional gasketed channels. Ring Gasket is placed in the gasket side channel between Laser welded plates. The ring gasket is of special clip type and can be made suitable for Aggressive media that flows in the  welded channel. 
The flow principle is same as Conventional Gasketed Type Plate Heat exchanger. The difference is that every second channel is sealed with the laser weld instead of gasket.

 

Plate Material:

SS304, SS304L, SS316, SS316L, SS317L, SS321, 254SMO, Titanium, N200/201, Hastelloy C-276, Hastelloy C-2000, Hastelloy G-30, 904L.

Plate thickness:

0.6mm, 0.7mm, 0.8mm

Gasket Materials Used:

EPDM, Nitrile, Chloroprene,
Fluororubber.

Other materials suitable for special working conditions
are also available.

Operation

The refrigerant like ammonia or solvent vapours or special media which is not compatible with normal gasket flows through the welded channel and the coolant or other fluids flows in the gasketted channel. All other operations are similar to the Gasketed PHE. Feature and benefits are similar to the Conventional type with additional feature like great compatibility with critical media.

Advantages

Specifications

bar
Design Pressure
25 mm
Connection Size
-40 ºC
Operating Temperature

Brazed Plate Heat Exchanger

The Brazed Heat Exchanger is constructed as a package of corrugated channel plates between front and rear cover-plate packages. The coverplate packages consist of sealing plates, blind rings and cover plates. Connections are mounted on the cover plates and can be customized to meet specific market and application requirements. During the vaccum-brazing process, a brazed joint is formed at every contact point between the base and the filler material. This design creates a heat exchanger that consists of two separate channels or circuits.

Plate Material:

There are different BHE product categories depending on material combinations and design pressures. The standard plate materials are AISI 316 stainless steel, vaccum-brazed with a pure copper filler or a nickel-based filler. For demanding applications, the plates can be made of SMO 254, a stainless steel with a higher content of molybdenum.

Special Feature

The other special innovation in BHE is the one which is
completely Stainless Steel Brazed/Fusion Welded plate Heat
Exchanger where there is no brazing material.


 

Features

  • 1
    Brazed Heat Exchangers are Non dismantable
  • 2
    These Heat Exchangers does not require gaskets
  • 3
    It can withstand up to 30 bar pressure and 200ºC

Advantages

Spiral Heat Exchanger

The Spiral Heat Exchanger is a simple design and tailor made as per the applications. Spacer Studs are flash welded in a special stud welding machine on the two long strips that comprise heating surface. The two strips are joined by welding in the centre of a retractable mandrel.


Rotation of the mandrel on special rolling machine wraps up the strips to form the basic spiral element. While wrapping takes place, one edge of each strip is flanged to form the closing when wrapping completed, plates are welded to seal one side of the each passage. To form a flange for attaching the covers, a bar with a special cross section is fitted to the periphery on each side of the spiral element. A header is welded on at the outer end of each passage to accommodate the respective peripheral nozzles. The end cover with nozzle fitted at the centre of end cover is covered on both sides. 

The overall gasket is placed with cover and hook bolts or welded depends on applications. Spiral heat exchangers are horizontally or vertically mounted and fitted with removable covers or welded extensions to make three different flow patterns for liquid to liquid or vapor to liquid services.

Plate Material:

Carbon Steel, Ss304, Ss316,
Duplex Stainless Steel

Advantages :

Self Cleaning Effect:
The formations of fouling diminishes the cross section of the passage and thereby increase the velocity and scrubbing action at the affected zone. This way SHE is excellent for fouling liquids.
Efficient Heat transfer:
Good Turbulence is achieved owing to the continuous curving passage. Easy Accessible Heat Transfer surface by opening the cover

Specifications

bar
Design Pressure
(from Full Vacuum)
100 ºC
Design Temperatures
1 m2
Heat Transfer Area
8 mm
Channel Spacing
300 mm
Channel Width

Inflated Plate/Heat-Ex Coil Type
Plate Heat Exchanger

The plates are laser welded ‒ Resistant spot welding of two sheets and then subsequently inflating with high pressure air in order to obtain internal channels for the fluid to flow.

The use of thin metal  sheets results  in  excellent heat transfer coefficients, reduces the cost while maintaining considerable mechanical stability.

These  are  versatile  and efficient heat exchangers  and can be used for indirect heating or cooling by immersion into the fluid, or attached onto the sides of tanks, pipes or machinery.

 

Plate Material:

Typically manufactured from Stainless Steel (AISI 304 or 316). 
Titanium and other materials may be available on request, depending on the feasibility of construction.

Plate Thickness:

0.8mm-3.00mm

Operating Temperatures:

Minimum :-46ºC to 
Maximum: 300ºC
[subject to evaluation of materials and mechanical stress ]

Design Pressure: 

Maximum pressure of 50 bar

Types of Heatex Coils

Single Embossed

Single Embossed Heatex

Double Embossed:

Double Embossed Heatex

Benefits of Immersion Coil

  • 1
    Ease of maintenance compared to other types of immersion heaters.
  • 2
    Smaller coils required to perform the same duty.

Benefits of Clamp-on Plate Coils

  • 1
    Can be used for freeze protection for critical applications.
  • 2
    Can be curved as per the requirement.

Advantages

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