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Heating Capacity Calculation Of Thermal Oil Heaters


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#1 Asif Aziz

Asif Aziz

    Brand New Member

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Posted 17 November 2016 - 05:57 AM

Dear Group Members,

 

We have thermic oil heater having simple design, two passes of round coils. Data of coils is as follow

 

Coil pipe diameter : 76mm

Inside coil diameter : 1320mm

Outside coil diameter : 1630

Number of turns in both coils : 46

 

We want to calculate/confirm its heating capacity. Is there any formula or rule of thumb to calculate heating capacity through heating surface area.

 

Looking for your positive response.

 

 

Regards,

Asif Aziz



#2 breizh

breizh

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Posted 17 November 2016 - 08:25 PM

Hi ,

Consider this resource .

 

Hope this helps.

 

breizh



#3 Dazzler

Dazzler

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Posted 20 January 2017 - 08:54 PM

Hello Asif, 

 

Seems like you have a non-API helical coil heater.  We design and build these.  www.gasco.net.au 

 

For an existing heater, you could also consider the stamped burner capacity which may be in the order of 20-30% higher than the design process absorbed duty into the coil.  You could also do a standard efficiency calc if you have a measurement of oxygen% and temperature on the flue gas. 

 

Vendors often use their own or purchased software for the design.  Also required would be coil pipe thickness and material.  The coils are likely to be close wound so that the coils turns for each pass are touching, which seals the flue gas side flow from passing between.

 

Dazzler






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