Selection guide for air heater

Nov 27, 2020

☑ Air heater-before buying

Before producing Air heaters, we must know several questions:

1) Is the heating tube built-in dry burning or bare air dry burning?

2) Is there wind circulation when exposed air is dry?

3) Working environment and working temperature

4) The size of installation space;

☑ Selection guide for Air heater-material selection

The selection of the sheath material of the dry-burning electric heating tube is mainly determined according to the heating liquid, and generally can be selected according to the following materials:

Tube material	Recommended surface load	Heating medium
Stainless steel 304, 321, 316L	5W/cm2	still air
Stainless steel 304, 321, 316L	5.5W/cm2	wind speed not less than 6m/s
Stainless steel 310S, Ingram 840, 800	10W/cm2	still air
Stainless steel 310S, Ingram 840, 800	11W/cm2	wind speed not less than 6m/s

☑ Guide for selection of dry-burning electric heating tube-selection of heating tube style and size recommendations

※ Wound fin straight rod type (corresponding product:)

1-1

power	L length	Fin length A	fastener
500	500	440	Pipe diameter 12 with M18*1.5
700	700	640	Pipe diameter 12 with M18*1.5
800	800	740	Pipe diameter 12 with M18*1.5
1000	1000	940	Pipe diameter 12 with M18*1.5
1200	1200	1140	Pipe diameter 12 with M18*1.5
1500	1500	1440	Pipe diameter 12 with M18*1.5

※ Wound fin U type (corresponding product:Finned Tubular Heater)

2-1

power	L length	Fin length A	fastener
500	200	170	Pipe diameter 12 with M18*1.5
1000	450	420	Pipe diameter 12 with M18*1.5
1500	700	670	Pipe diameter 12 with M18*1.5
2000	950	920	Pipe diameter 12 with M18*1.5
2500	1200	1170	Pipe diameter 12 with M18*1.5
3000	1500	1470	Pipe diameter 12 with M18*1.5

※ W type fin W (corresponding product:Finned Air Heater)

3-1 finned air heater facetory

power	L length	Fin length A	fastener
2000	500	470	Pipe diameter 12 with M18*1.5
2500	625	595	Pipe diameter 12 with M18*1.5
3000	750	720	Pipe diameter 12 with M18*1.5
3500	875	845	Pipe diameter 12 with M18*1.5
4000	1000	950	Pipe diameter 12 with M18*1.5
4500	1125	1095	Pipe diameter 12 with M18*1.5

※ Square fin 25*50 type (corresponding product:)

4-1

power	L length	fastener
200	140	M14*1.5
500	250	M14*1.5
750	350	M14*1.5
1000	450	M14*1.5
1500	650	M14*1.5
2000	850	M14*1.5
3000	1300	M14*1.5

※ Square fin 40*80 type-can be 2 straight rods or U type (corresponding products:)

5-1

power	L length	fastener
1000	400	M16*1.5
1500	650	M16*1.5
2000	750	M16*1.5
2500	1100	M16*1.5
3000	1200	M16*1.5
3500	1500	M16*1.5

☑ Selection guide for air heater-points of attention

The most important principle of air heater use is that the heat dissipation is good, the air flow is good, or when it is embedded in the hole, the gap should be small. Only if the surface of the dry heating electric heating tube has good heat dissipation, the life of the heating tube will be good.

When the air heater is used, the rated voltage needs to be stable, and the deviation is too large, which will cause the surface load of the dry-burning electric heating tube to increase, resulting in excessive surface temperature and overloading.

☑ air heater-we help you design

If you read the above information, but still can't choose the model, you can directly consult us:

Selection guide for Tubular Heater

Selection guide for liquid heater