Brazed plate heat exchanger DC

liquid/liquidbrazed platefor air conditioning

Product Overview
The DC series brazed plate heat exchanger integrates two independent refrigerant circuits with a single efficient water circuit in one compact unit. It enables two simultaneous or selective refrigerant-side exchanges while maintaining high thermal performance and reducing installation footprint.

Key Features

• High efficiency at full and partial load: maintains thermal performance whether one or both refrigerant circuits operate.
• Dual refrigerant circuits: independent refrigerant paths for improved system flexibility and redundancy.
• Reduced freezing risk: internal design limits freezing exposure during partial operation compared with parallel exchangers.
• Compact two-in-one design: combines both circuits in a single exchanger to save space and simplify piping.
• Lower installation and service costs: fewer connections and streamlined installation reduce CAPEX and maintenance effort.
• Optimal heat transfer: symmetrical flow path and full counter-flow arrangement increase thermal effectiveness.
• Improved system reliability: one circuit can continue operation if the other is offline in larger installations.

Design

• Heating plates: stainless steel, brazed
• Cover plates: stainless steel
• Refrigeration connections: multiple connection type options (threads, soldering, Victaulic, flanges)
• Water connections: shared high-efficiency water circuit

Flow & System Diagrams
The DC exchanger supports simultaneous operation of both refrigerant circuits or operation with a single active refrigerant circuit. Internal plate geometry preserves full counter-flow and uniform contact with the common secondary fluid to sustain thermal performance and minimize freezing risk.

Applications

• Refrigeration systems
• Heat pumps
• HVAC systems
• Data centers (CDU, immersion cooling, free cooling)
• Food industry
• Pharmaceutical industry (WFI generation and distribution)
• Power industry (ORC, lubricating oil coolers, closed cooling systems)
• Pool installations
• Sewage treatment plants (waste heat recovery, fermentation chambers)
• Oil cooling and hydraulic systems
• Chemical, refining and petrochemical industries

Frequently Asked Questions (selected)

• What is the DC series designed for? Systems requiring two independent refrigerant circuits with a common water circuit, where compactness and operational flexibility are important.
• What is the main advantage of the dual circuit design? It integrates two refrigerant circuits into one compact exchanger while maintaining full counter-flow and high efficiency under full and partial load, reducing space and simplifying installation versus two parallel exchangers.

Technical Specifications
Design Standards: ASME; PED; UL; EAC
Max Design Pressure: refrigerant side — 45 bar / 653 psi; water/glycol side — 25 bar / 363 psi
Max Design Temperature: 150°C / 302°F
Heating plates materials: stainless steel 1.4404 (AISI 316L) with copper brazing
Front and rear plates materials: stainless steel 1.4301 (AISI 304)
Design type: dual circuit brazed plate heat exchanger
Connection types: external thread (NPT), internal thread (NPT), dual connections (thread + soldering), Victaulic, flange DN50 PN40 / ANSI B16.5 2" Class 300 SORF, soldering connections for R exchangers
Certifications: ASME, UL, PED, EAC