How to measure Sat steam quality
How to measure Sat steam quality
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How to measure Sat steam quality
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RE: How to measure Sat steam quality
RE: How to measure Sat steam quality
RE: How to measure Sat steam quality
Cy
RE: How to measure Sat steam quality
RMW
RE: How to measure Sat steam quality
http://www.croll.com/croll/pr/calorimeter.asp
http://web.usna.navy.mil/~mecheng/EM300/Scans/THROTTLIN...
http://www.plantservices.com/Web_First/PS.nsf/ArticleID...=
Generally the superheat maintained is 50C. When the quality of steam is bad initially, it may be difficult to reduce the pressure after throttling to get a superheat of 50C. In this case a separating and throttling calorimeter is used instead. some of the condensate is removed in a separator and then remaining steam is throttled to superheated condition. From the quantity of condensate separated and from the initial and final conditins, the dryness fraction can be calculated.
Electrical calorimeters superheat the steam by an electric resistor and in this case the final enthalpy will be the sum of initial enthalpy and the electric energy given to the unit quantity of steam.
Regards,
RE: How to measure Sat steam quality
where t is the exhaust temperature (oC) for an exhaust pressure of 1 bar, for various line pressures (bars), the coefficients A and B are tabulated.
The author claims quite precise values are obtained by using his formula. He gives A and B values for 1 bar increases between 2 and 20 bar. As an example:
Line pressure, bars A(%) B(%/oC)
5 86.98 0.09547
10 85.00 0.09930
15 83.72 0.10312
20 82.78 0.10695
If a 10 bar steam when expanded to 1 bar shows a temperature of 115oC, its quality would be:
RE: How to measure Sat steam quality
RE: How to measure Sat steam quality
RE: How to measure Sat steam quality
a) non-condensable gases,
b) dryness value, and
c) superheat
Since you are looking for dryness test this information could definetilvely help you for your application.
For details see the following site:
http://www.ksapharma.com/steam%20quality.html
RE: How to measure Sat steam quality
TSD in condensate is a good "rough" reference too.