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Alfa Laval
Dryplus-3 shell & tube evaporators

Dryplus-3 shell & tube evaporators

Product catalog summary

Overview: The Dryplus-3 series of shell and tube evaporators are designed for air conditioning and refrigeration applications, offering cooling capacities up to 1500 kW. These evaporators are optimized for R407C refrigerant, enhancing performance by approximately 10% and improving the system's COP.

Key Features:

Optimized for R407C refrigerant with high-efficiency exchange tubes.
Available in multiple configurations with 1 to 4 independent cooling circuits.
Three baffle distances and water connection positions for flexibility.
Reduced water side pressure drops and safe flow for viscous lubricant oils.
Extractable tube bundle and stainless steel versions available.

Construction and Materials:

Components made from carbon steel, copper, and brass for durability.
Stainless steel options available for enhanced corrosion resistance.
Three insulation versions offered.

Integrated Water Tank Solutions:

Combines evaporator and water tank to save space.
Available in two configurations: storage before or after the evaporator.
CE approved and tested, available in sizes from 240 to 3000 liters.

Quality and Approvals:

ISO9001 certified design and manufacturing process.
Pressure and leakage tests conducted on each unit.
Available with various pressure vessel approvals including CE, ASME, and GOST.

Performance Data:

Nominal cooling capacities range from 18 kW to 1500 kW.
Models designed to operate efficiently with R407C refrigerant.
Detailed specifications provided for each model, including dimensions and pressure ratings.

Auxiliary Connections and Supports:

Equipped with universal brackets for flexible installation.
Auxiliary connections for thermostats and water drainage.

Specifications:

Refrigerant: R407c
Brine Inlet/Outlet Temperature: TIN = 12°C, TOUT = 7°C
Dew Point Temperatures: Tc(dew) = 45.26°C, Tvap(dew) = 2.75°C
Subcooling and Superheating: ∆Tsc = 3K, ∆Tsh = 5K
Lubricant Oil: ISO68

Nominal Conditions:

Cooling Capacity (Qnom): Ranges from 160 kW to 1500 kW depending on the model.
Nominal Water Flow (Wnom): Varies from 27.4 m3/h to 258 m3/h.
Maximum Water Flow (Wmax): Ranges from 31 m3/h to 280 m3/h.
Nominal Pressure Drop (∆pnom): Between 0.25 bar and 1.15 bar.

Dimensions and Weight:

Dimensions vary significantly across models, with lengths ranging from 1820 mm to 3810 mm.
Weights range from 150 kg to 1200 kg.

PED Category: The document specifies the PED category for each model, which refers to the use of Group 2 fluids at the PS value of the standard temperature version.

Key Observations:

The document provides a comprehensive breakdown of dimensions and specifications for each model, ensuring that users can select the appropriate evaporator based on their specific cooling requirements.
All models use the same refrigerant and lubricant oil, maintaining consistency across the product line.

Specifications: The document outlines various connection types for refrigerant and water circuits, including rotalock, welding, flange, and special connections. It specifies dimensions and types for each connection, such as Rotalock (R), Welding (W), and Flange (F) connections, with detailed measurements in millimeters.

Refrigerant Connections: The connection type depends on the evaporator size, with options for rotalock, welding, and flange connections. Specific dimensions and thread types are provided for each connection type.

Water Connections: Water connections vary by evaporator size, including threaded connections up to 3 inches, flexible joints starting at 4 inches, and UNI 2278 PN 16 flange connections. The document specifies compatibility with refrigeration and air conditioning liquids within a temperature range of -40°C to +80°C.

Design and Test Parameters: The document lists design pressure (DP), test pressure (TP), and design temperature (DT) for both refrigerant and water sides, with options for higher water side DP.

Dimensions and Volumes: Detailed dimensions for various models are provided, including overall dimensions, connection sizes, and water volumes. The document also includes nominal data for different standards such as CE, Alfa Laval standard, ASME, SQL, and GOST.

Company Information: Alfa Laval is a global provider of specialized products and engineering solutions, focusing on optimizing customer processes in various industries.

Catalog excerpts

Dryplus-3 shell & tube evaporators Dry expansion evaporators optimised for the air conditioning and refrigeration world

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Dryplus-3 shell & tube evaporators Excellence and flexibility in performance Performances and features Perfection in construction Integrate water tank solutions Quality and approvals Auxiliary connections Supports 18-47 kW 56-95 kW 120-165 kW 200-240 kW 300-345 kW 385-450 kW 505-570 kW 660-770 kW 915-1000 kW 1100-1500 kW COMPACT 160-210 kW COMPACT 235-275 kW COMPACT 390-480 kW Refrigerant connections Water connections IT - Integrate water tank solutions 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

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4 Dryplus-3 shell & tube evaporators Dryplus-3 series of shell and tube evaporators represent the natural technological evolution of a generation of heat exchangers leader in the air conditioning and refrigeration applications. The models of the series ensure cooling capacities up to 1500 kW at nominal conditions, from 1 to 4 independent cooling circuits, 3 different baffle distances depending on the working water flows and 3 different positions of the water connections. In particular, the evaporators have been optimised for operation with R407C refrigerant. The adoption of a dedicate, high efficiency...

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Dryplus-3 shell & tube evaporators 5 Perfection in construction Alfa Laval shell and tube evaporators include the results of a research intended to ensure a high level of mechanical strength and resistance to vibration and corrosion. The “U” design of the tube bundle allows the thermal expansion between the tubes and the shell avoiding any tension. Thanks to this solution the tube bundle can be extracted from the shell for inspection or maintenance (starting with model DX_56) and it is possible to rotate the shell in order to change the water connection position. The material choice is linked...

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6 Dryplus-3 shell & tube evaporators Nominal data DX_18-DX_1000 STD BT STD BT STD BT STD STD BT STD BT bar 29 21 25 21 24.5 21 15.5 24.5 21 24.5 21 bar 41.5 30 27.5 23.1 27.5 23.1 17.05 27 23.1 27 23.1 bar 16 16 10 10 10 10 10 10 10 10 10 bar 22.8 15 15 15 15 15 11 15 15 15 15 °C -10 -40 -10 -40 -10 -40 -10 -10 -40 -10 -40 +90 +50 +90 +50 +90 +50 +90 +90 +50 +90 +50 DT Quality means to count on a design and a manufacturing process certified according to ISO9001 and to offer the widest range of pressure vessel approvals. On request, it is possible to obtain certifications by the major marine classification...

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Universal Brackets: dimensions (mm) 55341700 140 82 178 220 60 50 40 12 60 1 25 - 55341710 168 112 208 250 60 50 40 12 60 1 25 - 55341720 194 46 238 280 60 50 40 12 60 2 15 32 55341730 219 82 276 320 80 50 40 12 60 2 15 32 55341740 273 176 352 400 100 60 50 16 60 2 17 38 55341750 324 108 372 420 100 60 50 16 60 3 17 38 55341760 406 216 468 520 120 80 60 18 60 3 20 54 A B C D E F SLOTS I L min max G H Type Dryplus-3 shell & tube evaporators 7 A) n° 2 x 1 /2" UNI ISO 228/1-G for regulation and/or antifreeze thermostats; B) n° 3 x 1/2" UNI ISO 228/1-G for vent and/or drain of water. C) Name plate....

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Evaporatori a fascio tubiero Dryplus-3 15 660-770 kW T F K I G G H H T F I K T F H H M L KI G G G G KI M L O T H H O F A = R = C D E B S d1 d2 d3 Nominal Conditions Model DXD660 - DXT660 DXD770 - DXT770 DXQ660 DXQ770 Refrig.: R407c TIN brine = 12°C TOUT brine = 7°C Tc(dew) = 45.26°C Tvap(dew) = 2.75°C ÄTsc = 3K; ÄTsh = 5K Lubricant oil ISO68 Qnom [kW] 660 770 Wnom [m3/h] 113 131,9 Wmax [m3/h] 140 148 Äpnom [bar] 0,45 0,50 Qnom Nominal cooling capacity Wnom Nominal water flow Wmax Maximum water flow Äpnom Nominal pressure drop (water side) ÄTsc Subcooling ÄTsh Superheating Dimensions Support Connections...

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T F K I G G H H T F H H M L KI G G G G KI L O T H H F A = R = C D E B S d1 d2 d3 16 Dryplus-3 shell & tube evaporators 915-1000 kW Nominal Conditions Model DXD915 - DXT915 DXD1000 - DXT1000 DXQ915 DXQ1000 Refrig.: R407c TIN brine = 12°C TOUT brine = 7°C Tc(dew) = 45.26°C Tvap(dew) = 2.75°C ÄTsc = 3K; ÄTsh = 5K Lubricant oil ISO68 Qnom [kW] 915 1000 Wnom [m3/h] 156,7 171,2 Wmax [m3/h] 170 180 Äpnom [bar] 0,70 0,90 Qnom Nominal cooling capacity Wnom Nominal water flow Wmax Maximum water flow Äpnom Nominal pressure drop (water side) ÄTsc Subcooling ÄTsh Superheating Dimensions Support Connections...

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Alfa Laval in brief Alfa Laval is leading global provider of specialized products and engineering solutions. Our equipment, systems and services are dedicated to assisting customers in optimizing the performance of their processes. Time and time again. We help them heat, cool, separate and trasport products such as oil, water, chemicals, beverages, foodstuff, starch and pharmaceuticals. Our worldwide organization works closely with customers in almost 100 countries to help them stay ahead. www.alfalaval.com Cod. 11100419-EN - Editon 03/06 www.stp.it

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