The indirect evaporative cooling heat exchanger is the core component of an indirect evaporative cooling (IEC) system, responsible for transferring heat from the primary (supply) air to the secondary (exhaust or ambient) air, without adding moisture to the primary air.
Here’s a detailed English explanation you can use in technical documents or product descriptions:
Indirect Evaporative Cooling Heat Exchanger
An indirect evaporative cooling heat exchanger is designed to enable thermal energy exchange between two air streams without direct contact. It is commonly used in industrial ventilation, data centers, panel rooms, and energy-saving HVAC systems where moisture-free cooling is essential.
Working Principle
The heat exchanger typically consists of a series of plates or tubes, arranged to form separate channels for the primary air (the air to be cooled) and the secondary air (usually outdoor air).
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Secondary air passes through a wet channel, where water is evaporated and cools this airstream.
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Primary air flows through adjacent dry channels, separated by heat-conductive surfaces (e.g., aluminum or plastic plates).
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The heat from the primary air transfers to the cooled secondary air via the heat exchanger surface, lowering the temperature of the primary air without increasing its humidity.
Key Features
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No moisture transfer: Only heat is transferred; the supply air stays dry.
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No refrigerants required: Eco-friendly cooling without harmful gases.
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High efficiency: Especially when using cross-flow or counter-flow plate-type exchangers.
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Corrosion-resistant materials: Often made from aluminum alloy, stainless steel, or specially coated plastic.
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Compact design: Suitable for integration into air handling units, panel cooling cabinets, or standalone IEC systems.
Applications
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Panel rooms and electrical control cabinets
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Data centers and server rooms
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HVAC systems in industrial buildings
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Energy recovery ventilation systems
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Pre-cooling for air conditioning systems