1.Standard type coil (S Type)
This type of coil is used for inlet air temperatures above 1.7°C with steam at constant
Most applications under pressure. The most commonly used occasion is the high temperature process
and "reheat" of the HVAC system. but not for use immediately after the coil
Where a uniform outlet air temperature is sought, such as a multi-zone heating system. also does not apply
Where a steam regulating valve is installed to control the temperature.
2.Center Feed Coil (Type C)
Can be used where air flow temperature is below freezing temperature or where modulating control is used
Single row center feed coil. Recommended use cases include:
①Single-row pipes are used to meet the heating requirements
②When using a steam control valve
③ Where the outlet air temperature is required to be uniform over the entire surface of the coil
④When using stainless steel pipe
Two rows of center feed coils can be used where ② and ③ are required, while for ice
For freezing temperature occasions, it is better to choose the tandem type coil.
The center feed coil is inserted on the outside by a bare tube (called the center steam distribution tube)
Made up of finned tubes. The steam enters the center tube, flows upward in the tube, and then
It discharges into the outer tube and flows down between the outer wall of the center tube and the inner wall of the finned tube,
into the condensate header. The center tube acts as a steam tracer, making the finned
The tube maintains temperature throughout its length.
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