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Induced Draft Heat Exchanger

Information The Induced Draft Air Cooler (IDAC) is an air-cooled heat exchanger that uses top-mounted fans to draw ambient air upward through the finned tube bundle. By pulling air instead of pushing it, the IDAC design ensures uniform airflow distribution, minimized hot-air recirculation, and...

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Description

Information

The Induced Draft Air Cooler (IDAC) is an air-cooled heat exchanger that uses top-mounted fans to draw ambient air upward through the finned tube bundle. By pulling air instead of pushing it, the IDAC design ensures uniform airflow distribution, minimized hot-air recirculation, and optimal performance in high-temperature or large-capacity industrial cooling applications.

Advantages

● Eco-Friendly: Zero water consumption, no wastewater discharge.

● Cost-Effective: Lower operational and maintenance costs vs. water-cooled systems.

● High Adaptability: Performs reliably in extreme temperatures and harsh conditions.

● Compact Design: Modular structure for space-saving installations.

● Long Lifespan: Corrosion-resistant materials and robust engineering.

Applications

● Oil & Gas: Cooling refinery streams, natural gas, and LNG.

● Power Generation: Condensing steam turbines and cooling auxiliary systems.

● Chemical Industry: Managing exothermic reactions and vapor condensation.

● Renewable Energy: Supporting geothermal and biomass energy systems.

● HVAC & Manufacturing: Industrial heat recovery and process cooling.

Optional Configurations

● Compliance with ASME and API 661 standards

● Forced Draft or Induced Draft fan arrangements

● Horizontal or Vertical air flow design

● Smart Controls (temperature sensors, variable speed fans)

● Explosion-Proof, Low-Noise, or Marine-Grade Designs

● Dry/Wet Hybrid System for Enhanced Performance in high ambient temperatures

● Custom painting & corrosion protection

Extended Surface Fin Types Available

● L-foot fin (basic embedded fin, economical and widely used for general-purpose cooling)

● Overlapped L-foot fin (LL type): provides better corrosion resistance by overlapping fin foot over the tube surface

● Embedded G-fin: fins mechanically embedded into the tube surface for improved thermal contact and durability

● Knurled L-foot fin (KL type): uses a knurled surface on the tube to enhance mechanical bonding between fin and tube

● Extruded fin: formed by extruding aluminum over the tube for maximum corrosion resistance and strength, ideal for harsh environments

● Bimetallic finned tubes: e.g., aluminum fins on carbon steel or stainless steel tubes, combining thermal conductivity with structural or corrosion benefits

● Custom fin materials and geometries available upon request

Header Types Available

● Plug-type header (for compact or low-cost design)

● Removable cover plate header (for easy inspection and maintenance)

● Removable bonnet-type header (for higher-pressure applications with external access)

● Manifold-type header (for multi-pass or special flow arrangements)

Technical data

Max size	Up to 15m fin tube length, up to 4m bundle width
Design pressure and design temperature	Up to 550 bar, up to 350°C
Motor range	5~45kw
Fan size	1~5m