Re: [MW:10093] PWHT

Dear Mr IIan,

I did not understand your question?

 

You can calculate the Rate Of Heating / Rate Of Cooling from ratio of change in temp(DegC) to change in time (Hrs)...same as u calculate the slope of a straight line dy/dx.

 

Just calculate the total time taken in hours to reach 720DegC from 300DegC/ 400DegC
and calculate the ROH.

On Tue, Mar 1, 2011 at 7:46 PM, k.ilangkumaran ilangkumaran <k.ilangkumaran@yahoo.com> wrote:

Dear experts,                     As per the ASME B 31.3 table 331.1.1 the temperature range is 704-746 deg C. How do we find out the rate of raising and cooling temperature?   Regards Ilan

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