Cp and SG are linear (type sg=a*T(C)+b also Cp is linear same general equation.
I realized that delta T thru our equipment is just 13C, so each 1C in T difference lead to up to 8% error in absorbed heat.
We are going to a instrument checking effort now.
Thank to everybody for the comments and help.
Zoobie,
For Cp and SG I'm using the equation presented on the product data sheet.
I agree with "compounded error".
I'll go thru a instrument calibration campaing to check on these.
Gracias 25362....
The xs air 10 % was reported to me by the company that tuned the burner...I'll ask more detail.
Zoobie: I’m using Terminol 72, 3 year old. For Cp, SG I’m using manufacture correlations at T average thru the heater.
Thanks y’all so far
Thanks to all for your feedback, here there are some answers:
Combustion Efficiency: I was using fabricator manual: He suggests using the %air excess and the stack temperature go in a table (a table for NG and with 80F/60HR Air) and get “%H”, this value should be then subtract from 100%. Then...
In our plant we have a hot oil heater running with natural gas.
Equipment capacity= 13.7 MMBTU/hr (absorbed heat)
Currently we are running about 14 MMBTU/hr of released heat (burning this amount) and we are getting efficiency about 65% measured as Heat absorbed by the oil/heat released by...
JMW, thanks for the thoughts
Some extra info:
Both phases are:
Oily: SG 0.95
Aqueous: SG varies between 1.08 to 1.18. Basically is sodium sulfate in water. And no control on it.
Temp= 100 C
We have all kind of piping orientation: vertical and horizontal. Also we have a static mixer in the...
As a result acidulations process, we get a two liquid phase flow: an oily phase and brine (water and sodium sulfate).
Liquid phases ratio is critical to a later centrifuge operation.
So far a uncomplicated sampling procedure is used to visually evaluate the phases ration, but we want to go with...
I'm on a design process of a no critical piping. And I need define if tracing will be copper or stainless.
I need some experience on this matter.
All critical piping will be jacketed (steam, hotoil or tempered water.
thanks in advance,
Gottburg
