Spiral-finned tubular air heater in serpentine form with brass terminals
散热片加热管
散热片加热管
在护套上螺旋缠绕并焊接钢制或不锈钢翅片的管状元件，提高传热面积，使风道在相同护套温度下承载更多千瓦。
- Max medium temperature
- 572 °F(300 °C)
- Power range
- 0.5 – 6 kW
- Voltage
- 220 / 380 V, 50 Hz
- Sheath material
- 10# steel, 304 stainless
- Medium
- Air
- Mounting
- Bracket, Threaded boss, Bore insert
- Tube diameter
- 0.63 in
- Watt density guidance
- up to 3.5 W/cm² (23 W/in²) in forced convection
- Lead time
- 15–25 days
- MOQ
- 10 units
- Pricing
- On application
Design notes
同样的风道宽度，三倍的散热面积
A finned element solves the problem that limits every air heater: air will only take so much heat from a given area of tube. Winding a continuous fin onto the sheath and welding it down roughly triples the effective surface, so the same duct cross-section can carry substantially more kilowatts without raising the sheath temperature that decides element life.
Fin material follows the air. Carbon-steel fin is standard for clean, dry heating. Stainless fin is used where the air carries moisture, food residue or mildly corrosive vapor, and where wash-down is part of the cleaning routine.
The trade-off is that fins need moving air. In still air a fin can actually make matters worse — it blankets the tube and the heat has nowhere to go. Finned elements belong in ducts, unit heaters and forced-convection ovens where a fan sweeps them continuously, and should be interlocked with airflow proving so they cannot energize against a stopped fan.
Features
- 翅片与护套连续焊接 —— 不存在松动的接触热阻
- 有效传热面积约为光管的 3 倍
- 碳钢或不锈钢翅片，按空气洁净度和冲洗要求选择
- 也可供应不发热的翅片管作蒸汽散热用
- 可按风道宽度、弯管形式和支架布置定制
Typical applications
- 空调风道加热与再热盘管
- 暖风机与风幕机
- 强制对流干燥炉
- 粮食与木材干燥窑空气加热
- 蒸汽散热器替代（不发热翅片管）
North American build options
- Voltage
- 120 / 208 / 240 / 277 / 480 / 600 V @ 60 Hz
- Threads
- NPT or BSP cut to order
- Flanges
- ANSI B16.5 150# / 300#
- Drawings
- Issued in inches on request
These are build options, not stock items — the catalog part numbers above are 50 Hz with metric fine threads. State what you need on the RFQ.
Part numbers & dimensions
8 catalog part numbers in the JGF series
Finned elements are usually made to the duct dimension. Give us the free width and depth, the airflow in m³/h and the required temperature rise and we will size the battery rather than the element alone.
Minimum order quantity for this series is 10 units. Dimensions switch between millimetres and inches with the unit toggle in the header.
Full specification
- Sheath material
- 10# steel or 304 stainless
- Fin material
- Carbon steel or stainless
- Tube diameter
- Ø16 mm
- Max. medium temperature
- 300 °C
- Effective area gain
- ≈ 3× bare tube
- Airflow requirement
- Forced convection; interlock with airflow proving
- Voltage
- 220 V or 380 V, 50 Hz
- Power range
- 0.5 – 6 kW per element
Questions engineers ask
When should I choose a finned element over a plain tube?
When the kilowatts will not fit the duct at a safe watt density. A finned element gives roughly three times the surface area in the same width, so you can carry the load without raising sheath temperature. The prerequisite is moving air — in still air the fin blankets the tube and makes the situation worse, not better.
Do I need an airflow interlock?
Yes. A finned element energized against a stopped fan fails quickly, and in a duct with combustible dust or product residue it is a fire risk. Wire a differential pressure switch or a sail switch into the heater contactor coil so the heater physically cannot run without proven airflow.
What is the unheated finned tube for?
It is a steam radiator element. Steam or hot water is passed through the tube and the fins release the heat into the room, replacing a conventional hydronic radiator in workshops, greenhouses and drying rooms. It is the same finned tube without a resistance coil inside.
