Conceived, designed, and manufactured by Graham Corporation, the Heliflow® has long served industry with proven quality and performance. Heliflow® heat exchangers are designed and manufactured at Graham's plant in Batavia, NY. This allows for complete control of Engineering, Design, CAD Drawings, Manufacture, QC and Shipment at one facility.
The Heliflow's® unique design enables it to be employed in a variety of industries and services. Capabilities include Sample Coolers, Pump Seal Coolers, Vent Condensers, Vaporizers, Compressor Inter/After Coolers, Reflux Condensers, Cryogenic Exchangers and Water Heaters.
The Heliflow® has true counter-current flow unlike shell and tube exchangers. This counter-current flow, along with the spiral flow path, allows the Heliflow® to transfer up to 40% more heat for a given surface area.
The Heliflow's® spring like coil absorbs mechanical and thermal stresses. The Heliflow® can accommodate extremely large temperature differences or thermal cycling. The tube coil in effect acts like an expansion joint and will flex to relieve stresses arising from thermal growth.
The Heliflow's® unique design allows for the hot side and cold side to be optimized independently. On the tube side, the number of tubes can be varied from 3 to 45 and tube diameters from 1/4" to 3/4" are available. On the shell side, the spacing between the tubes can be adjusted in order to obtain the optimum velocity and pressure drop.
Operating pressures of up to 10,000 psi are easily contained by the Heliflow's® coil.
Heliflows® function in a fraction of the space of a typical shell and tube exchanger. They can be mounted on columns, nozzles, walls, ceilings, or in-line without additional support. Since the Heliflow® only has three main components, it is extremely easy to disassemble and maintain.
Graham CorporationGraham's GPE Series Plate Heat Exchangers are designed with six different channel geometries, each with different thermal and pressure drop characteristics, allowing for optimum performance. The hot and cold sides are optimized independently, with the hot side grouping different form the cold side grouping.
Diagonal flow path prevents dead areas. Nozzle connections are arranged to force each fluid through the plate pack in a diagonal direction. This arrangement prevents dead areas that lead to inefficient operation and increased fouling in some designs. The gasket groove of the Graham Plate Exchanger is recessed 50% on each plate. The result is a confined gasket area which prevents misalignment during assembly. Gaskets that are held in place by tabs or other mechanical means may slip out of place during assembly. This problem is often not detected until hydro test. Then the unit must be disassembled and the gasket repaired, causing delays. For these reasons, Graham gaskets are glued to the plates with high quality gasket adhesive. Graham's channel geometry and the use of high quality glue assures proper positioning of the gaskets during assembly.
All fasteners, including the tie bolts on Graham Plate Exchangers, are made of corrosion resistant, non-galling, electro-zinc plated alloy steel. Port liners are of stainless steel construction, assuring years of trouble-free operation, and reducing spare parts and maintenance. Many competitors use elastomer type liners which must be periodically replaced.
Standard frame components for Graham's GPE Series units are sized for 120% capacity. This added length makes cleaning and maintenance easier, and also allows the user to add additional plates should future demands increase.
An extensive inventory of plates, gaskets, and frame components are kept in stock and are ready for assembly at the Batavia, NY facility. Frames are designed in accordance with requirements of ASME Section VIII, Division 1. Each complete unit is hydro tested before shipment.
Explore their site at Graham Corporation or contact us for more Heliflow and Plate Heat Exchanger information.