We currently operate 4 ABB HRSGs in combined cycle orientation. On one of the four HRSGs the stack temperature is around 60 degrees higher than the average of the other three. What would be some of the causes for this? What should I look into in getting the heat transfer across the boiler...
I am looking for a device sensitive enough to measure the Harmonic noise index on a GE 7FA generator. We usually hire GE to come onsite to perform a test to determine if the core of the geneerator is loose which may require belly bands to prevent key bar rattle. Does anyone have any experience...
We had a tube leak in the LP Evaporator section of the HRSG. I know the pressure and temperature in that section. I also know the size of the tube leak. (lbs/hr) How can I calculate a btu loss from the leak that I can use to show an adjustment to our heat rate? Basically I just put Fuel...
I am trying to calculate the efficiency losses directly attributed to High Backpressure on the steam turbine due to an air in leak on the rupture disk. Can anyone help me out with a calc to perform, I want to see what the heat rate loss is and try to put a dollar figure on it.
Also I want to...
We had a small glycol leak into the condensate system at the plant. The condensate is controlled around 9.0 pH and is demineralized water. My question is on the chemical reaction between the glycol and the 9.0 pH demineralized water. It caused the conductivity to increase well out of our...
how do I use this equation? the only variables I know are that the city water pressure is around 90 psi and the pipe ID is 1"... is this enough info to calculate flow over a 24 hour period?
Here at the plant on our Circulator Pumps we have booster pumps that use circ water for cooling and lubrication. Unfortunetly the booster pumps fail often due to the low pH of our Circ Water. New pumps have been order to correct issues we have had with old pumps. My question is I am trying to...
Can someone do a check on my calculation:
I am trying to convert 1000 MBs/Hour to SCFM
I am using 1.034 MBs/MCF
So 1000 (MBs/Hour) / 1.034 (MBs/MCF) = 967 (MCF/Hour)
967 (MCF/Hour) * 1000 (SCF/MCF) = 967000 (SCFM/Hour)
967000(SCFM/Hour) / 60 (Minutes/Hour) = 16116 SCFM
Does this...
How much of an increase can you expect (ballpark) from inserting turbulators into an existing shell and tube heat exchanger? Existing heater is 10.92 MMBtu/hr. Tube side is feedwater shell side is natural gas.
Curently fuel gas entering our gas preheater is at 170 deg F. The gas is raised to that temperature from a gas compressor. The gas leaving the preheater (shell and tube heat exchanger) is at around 370 deg F. We are trying to find a way to get away from the compressors because of the...
Can someone quantify entropy for me? I am having a hard time putting the theory of entropy to something real. Can anyone explain this concept to me using a real life example, possibly a heat transfer situation?
