Low-Approach-Temperature Plate Heat Exchanger
The high-efficiency low approach temperature plate heat exchanger is a specialized thermal processing unit uniquely optimized for ultra-close temperature difference working conditions.
Constructed with precision-stacked corrugated heat transfer plates, the equipment forms thin rectangular flow channels to enable ultra-efficient heat exchange under minimal temperature differentials ranging from 1℃ to 5℃. Adopting advanced chevron and horizontal flat corrugated profiles, the plate structure actively breaks fluid laminar boundary layers and generates intense turbulence. Combined with pure counter-flow and cross-flow circuit design, it drastically reduces thermal resistance across thin metal plates and maximizes heat transfer driving force.
This innovative design overcomes the inherent efficiency limitations of conventional heat exchangers in low delta T scenarios, enabling highly effective recovery and reuse of low-grade waste heat that is typically difficult to capture with traditional thermal equipment.
Key Features
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Industry-Leading Ultra-Low Delta T Heat Transfer: Engineered for extreme precision heat exchange, the unit achieves a final temperature approach as low as 1℃ with a logarithmic mean temperature difference (LMTD) utilization rate exceeding 98%. The overall waste heat recovery efficiency reaches above 90%, delivering unmatched performance in low-grade heat harvesting and energy recycling systems.
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Ultra-Compact & Highly Flexible Structure: Featuring an ultra-light and compact footprint, its volume is only 1/3 to 1/8 of a traditional shell-and-tube heat exchanger, with over 60% reduction in overall weight. It supports both vertical and horizontal installation, perfectly fitting confined spaces such as distillation tower tops and compact equipment rooms. The modular plate design allows flexible adjustment by adding or removing plates, while series-parallel circuit combinations accommodate applications from small residential systems to large-scale industrial facilities. It maintains precise and optimized heat transfer performance even under asymmetric flow conditions.
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Stable Performance Across Diverse Harsh Conditions: Available with premium corrosion-resistant plate materials including 316L stainless steel, titanium alloy, and Hastelloy. The diversified material options ensure stable and durable operation when handling corrosive media such as seawater, strong acidic fluids, and radiation-exposed process liquids, delivering exceptional reliability for long-term industrial continuous operation.
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Significant Energy Saving & Operating Cost Reduction: Optimized flow channel geometry minimizes fluid resistance and pressure drop. Compared with shell-and-tube heat exchangers, the system reduces pump and fan power consumption by 30%–50%. The ultra-high heat recovery rate effectively cuts primary energy input, bringing substantial energy-saving benefits and lower operational expenses throughout the equipment lifecycle.
Technical Specifications
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Minimum Working Temperature Difference: 1℃ – 5℃
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Maximum Allowable Pressure Drop: ≤ 0.5 MPa
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Max Design Temperature: ≤ 180℃
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Max Design Pressure: 30 bar
Application Industries
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Industrial Production Sector: Extensively deployed in petrochemical, metallurgy, and power generation industries. Ideal for closed cooling systems and combined heat and power (CHP) waste heat recovery in thermal power plants, efficiently capturing low-grade waste heat below 120℃ that cannot be fully recycled by conventional equipment.
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HVAC & Building Energy Systems: Widely used in district heating stations, central building air conditioning waste heat recovery, and data center free cooling systems. Precision small-delta-T heat exchange improves the overall system Coefficient of Performance (COP) by 10%–15%, realizing significant building energy conservation and intelligent thermal management.
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New Energy & Environmental Protection Industry: Suitable for hydrogen energy production including PEM electrolyzer cooling, LNG refrigeration systems to reduce refrigerant consumption, and wastewater heat recovery for building heating. It also supports efficient heat exchange for industrial CO₂ capture modules, contributing to low-carbon environmental protection and clean energy utilization.
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Specialized & Civil High-Precision Fields: Compliant with GMP standards for food and pharmaceutical processing, supporting instantaneous milk sterilization and precise pharmaceutical water temperature control. In low-temperature refrigeration applications, it effectively prevents freezing risks and reduces refrigerant costs. Additionally, it delivers ultra-precise temperature control with a terminal tolerance of ±0.2℃ for electronic chip cooling and high-end precision manufacturing equipment.