Ultra-thin Chemical Etching Printed Circuit Heat Exchanger for Energy Industry

PCHE Overview
Xinhaisen Technology specializes in manufacturing high-performance etched metal plate heat exchangers through advanced chemical etching technology. Our precision-etched plates enable superior thermal transfer efficiency with optimized flow channels for various industrial applications.

Manufacturing Process
Our PCHEs are crafted through a state-of-the-art, multi-stage precision process:

• Design & Prototyping: We create digital designs of the intricate flow channel patterns based on your thermal and hydraulic specifications.

• Precision Metal Etching: Using our proprietary chemical etching technology, we precisely etch these complex, micrometer-scale flow channels onto thin metal plates (known as platesheets). This method ensures flawless, burr-free channels without stress or material deformation.

• Stacking & Alignment: The etched plates are meticulously cleaned and stacked in an alternating sequence to form the hot and cold fluid layers.

• Diffusion Bonding: The entire stack is placed in a vacuum furnace and subjected to high temperature and pressure. This causes the atoms at the contact surfaces to diffuse, permanently bonding the plates into a single, solid, monolithic block with exceptional strength and integrity.

• Finishing & Testing: The bonded block is machined to final dimensions, and ports/headers are attached. Each unit undergoes rigorous pressure, leak, and performance testing to meet or exceed industry standards.

PCHE Features

• Extreme Compactness: Exceptional heat transfer surface area per unit volume, offering significant space and weight savings.

• High Efficiency: Complex, optimized flow channel designs (e.g., zigzag, straight, or finned) maximize heat transfer.

• Superior Pressure & Temperature Resistance: Monolithic, all-metal construction allows operation at very high pressures (often >500 bar) and temperatures (cryogenic to 900°C).

• Wide Material Compatibility: Can be etched and bonded from stainless steels (304, 316L), nickel alloys (Inconel 600/625), titanium, and other special alloys for corrosion resistance.

• Customizable Designs: Flow patterns, port locations, and overall geometry can be fully customized for specific application needs.

• Reliability & Safety: No gaskets, welds, or joints in the core, eliminating common failure points and ensuring leak-proof performance.

PCHE Specification

FAQ Q1: What are the main benefits of a PCHE over a traditional shell-and-tube heat exchanger? A1: PCHEs are significantly more compact (up to 85% smaller), can handle much higher pressures and temperatures, offer greater design efficiency, and are more reliable due to their diffusion-bonded, monolithic structure. Q2: What materials can you use for the etched plates? A2: We primarily etch stainless steels, titanium, and nickel alloys. We can source and process other etchable alloys based on your fluid compatibility and performance requirements. Q3: Can you create customized channel designs? A3: Absolutely. Our photochemical etching process is ideal for customizing channel shapes (semicircular, rectangular, tapered), sizes, and layouts without expensive tooling changes, allowing for performance optimization. Q4: Do you provide the complete, bonded PCHE unit? A4: We specialize in the precision etching of the metal plates, which is a critical core part. We typically supply the etched plates ready for bonding or collaborate with trusted diffusion bonding partners to deliver a complete unit based on project needs. Q5: What information do you need for a quotation? A5: Please provide channel layout drawings (CAD preferred), material specification, plate thickness, overall core dimensions, target operating pressure/temperature, and approximate annual volume.

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