pressure-temperature
pressure-temperature
(OP)
Dears
we have boilers produce steam with 7 bar and we use it for Dairy application we have PRV's to get 4 bar, 1 bar and 0.3 bar so please what is the Corresponding temperature for each pressure
Thank you
we have boilers produce steam with 7 bar and we use it for Dairy application we have PRV's to get 4 bar, 1 bar and 0.3 bar so please what is the Corresponding temperature for each pressure
Thank you





RE: pressure-temperature
Note that P in the table appears to be absolute pressure, hence 1.3 bara = 108C, 2 bara = 120C and 5 bara = 153C all based on saturated steam
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: pressure-temperature
http://www.amazon.com/Thermodynamic-Properties-Ste...
RE: pressure-temperature
For example, if 7 bar is a gauge pressure (barg), the absolute pressure will be approximately 8 bara. The enthalpy at 8 bara is approximately 661.2 kJ/kg. Using this enthalpy, the approximate temperature at each pressure is as follows:
5 bara (4 barg) ==> 160 deg-C
2 bara (1 barg) ==> 150 deg-C
1.3 bara (0.3 barg) ==> 147 deg-C
Best of luck!
RE: pressure-temperature
please why we consider initial steam from the boiler as saturated steam and the steam after PRV's as superheated steam
Regards
RE: pressure-temperature
RE: pressure-temperature
Please note that in my previous post, I incorrectly stated that the enthalpy of saturated steam at 8 bara was 661.2 kJ/kg. This enthalpy is actually for saturated liquid. The correct enthalpy for saturated steam is 2768.3 kJ/kg. Also note that the temperatures at each pressure I noted in my previous post are correct.
Best of luck!
RE: pressure-temperature
OP never stated steam from boiler was superheated, ergo others will ASSume only dry saturated steam is being delivered.
As LittleInch noted, providing more information yields better answers!
CR
"As iron sharpens iron, so one person sharpens another." [Proverbs 27:17, NIV]