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Cleanroom HVAC and Air Handling Equipment
Finned-Tubular Electric Air Heater
A framed six-element resistance heater bank that adds controlled sensible heat to cleanroom supply air using robust finned tubular elements.
- Six Protected Heating Elements
- High Surface-Area Fins
- Fast Sensible Heating
- Replaceable Individual Elements
Product Introduction
Six metal-sheathed resistance elements are fitted with continuous fins and supported in a rigid stainless frame. The enlarged surface area spreads electric heat into the passing air at a lower sheath loading than an exposed wire coil. Ceramic terminal insulators and a side junction box isolate power connections from the airstream, while the modular layout allows one element to be replaced without discarding the full bank.
Key Features
Continuous fins increase convection area and distribute heat across the full face of the bank.
Six independently terminated elements permit staged power control and balanced three-phase loading.
A removable junction cover gives direct access to ceramic terminals and individual element connections.
Customer Product Concerns
Electric air heating must provide uniform temperature rise without overheated wire sections or inaccessible terminals.
Exposed resistance wire is vulnerable to contamination and physical damage.A stainless metal sheath encloses each resistance conductor before heat reaches the fins.
Uneven airflow creates local element overheating.Six evenly spaced finned elements spread watt density across the full heater face.
One failed element forces replacement of the complete heater.Each finned element is individually terminated and removable from the support frame.
Electrical terminals are difficult to inspect inside an AHU section.The external side junction box groups insulated connections outside the active airflow path.
Typical Applications
Cleanroom AHU preheat sectionsLow-temperature supply-air heatingLaboratory make-up air unitsDrying and tempering modulesStandby heat for hydronic coil systems
Technical Parameters
Typical physical construction for a six-element finned-tubular heater bank is summarized below.
| Core Material | Incoloy or stainless tubular elements with nickel-chromium resistance wire and magnesium-oxide insulation |
|---|---|
| Panel Thickness | 1.5-2.5 mm stainless support-frame thickness |
| Effective Width | 400-1600 mm active heater face width |
| Maximum Length | Up to 2200 mm element bank length |
| Steel Facing Thickness | 1.2-2.0 mm stainless junction-box sheet |
| Core Density | Approximately 2200-3000 kg/m³ for compacted magnesium-oxide element insulation |
| Thermal Conductivity | Approximately 20-30 W/(m·K) for compacted magnesium-oxide insulation |
| Surface Finish | Natural stainless or passivated Incoloy sheath with metallic fins |
| Joint Type | Bolted six-element frame with threaded terminal studs and ceramic insulators |
| Customization | Available based on the intended application and operating environment. |
Available Options
Stainless steel or Incoloy element sheathSingle-stage, multi-stage or SCR power controlHigh-limit cutout and airflow interlockCustom frame dimensions and terminal-box orientation
Planning a Finned-Tubular Electric Air Heater specification?
Send us your dimensions, installation conditions, performance targets and required surface finish.
