AlfaDisc An all-welded Plate Heat Exchanger for Refrigeration Flow Restrictor Flow pattern as a condenser Fluid is forced through the throat of the plate on the shell side. The plate pack is resistant to thermal expansion and damage from freezing due to the “accordion” core construction. AlfaDisc is a compact, welded heat exchanger for refrigeration applications including two-phase and single-phase liquid/gas cooling. It is manufactured for a wide range of duties making it applicable for low and high temperatures (over 200°C/400°F) as well as high pressures (100b/ASME 680 psi). These characteristics make the AlfaDisc a perfect fit with natural refrigerants like ammonia and carbon dioxide. AlfaDisc provides the thermal efficiency and the compactness of a plate-and-frame heat exchanger while handling temperatures and pressures otherwise requiring shell-and-tube units. It has a high tolerance for thermal expansion compared to other welded technologies. The plate and the shell modules can be constructed of different materials selected to withstand corrosive fluids and to satisfy demands for process fluids in high and low temperature applications. How it works AlfaDisc is constructed of a shell and a plate pack with alternating channels for pure co-current or counter-current flows. The refrigerant typically condenses or evaporates on the shell side where the two-phase flow is assisted by flow restrictors. On the plate side, water or bines are normally pumped through the welded channels. In some applications, for example cascade systems, phase change can occur on both the plate side and the shell side.

A removable plate bundle is available as an option. AlfaDisc can be arranged to handle combinations of fluids to be cooled or heated such as cooling of two fluids by one cooling water circuit and heat recovery. Arrangement with flow in passes allows cooling of small flows with large temperature drops. System Applications AlfaDisc is designed for natural refrigerants or HFCs for industrial and commercial refrigeration system applications. Water/glycol cooled oil coolers Oil cooler and condensate subcooler for flooded evaporation Discharge gas desuperheater for heat recovery Flooded evaporator...

Model range Maximum area m2 Maximum area ft2 AD50 22 235 AD100 66 706 AD150 162 1733 AD200 Under development 2008 AD150 AD100 AD50 Standard materials Plates (including connections) Shell (including connections) CE/PED AISI 316L Carbon steel, AISI 316L ASME VIII AISI 316L Carbon steel, AISI 316L Coating – Epoxy On request Ti, Alloy 254, Alloy C276 – Quality Assurance and Pressure Vessel Certifications ISO 9001 ASME VIII Div 1 PED CE, Europe CRN, Canada GOST, Russia SQL, China Other pressure vessel codes including marine classifications on request Design Pressure range Design Temperature range...

ERC00128EN 0710 How to contact Alfa Laval Up-to-date Alfa Laval contact details for all countries are always available on our website at www.alfalaval.com. Alfa Laval reserves the right to change specifications without prior notification. ht hb Model H1 Lmin/Lmax1 D C hb1 ht1 Plate side Shell side AD50 686 483/1219 305 225 305 400 50 50-150 AD100 1117 635/1448 559 410 460 660 100 100-300 AD150 2032 935/1880 863 590 1010 910 150 150-400 1) Measurements vary with connection sizes and supports Model H1 Lmin/Lmax1 D C hb1 ht1 Plate side Shell side AD50 27 19/48 12 8 7/8 12 16 2 2-6 AD100 44 25/57...