Recent content by Mark31

Is there a way to reset the vertical scroll bar in excel so that it is calibrated to the information on the sheet rather than what used to be on the sheet?

2.9MW/m2 for grate area and 200kw/m3 for furnace volume

I agree with johnnymist2003, you need to be a little more specific. If you are looking at performance, you should probably check out ASME PTC4 and PTC4.1. This will give you all you need to complete a boiler performance test.

Hey....STTTTOOOPPPPPP I figured it out about 2 months ago...thanks to everyone for your comments

I don't understand your point. The first stage of the combustion process for biomass fuels, is to evap. moisture. The excess air requirements are a function of flame stability and unburnt carbon loss. Excess air also affects the production of CO and NOx. Experiance tells us that the excess...

How do you liberate oxygen by evaporating moisture????? I dont think your buddy knows what he is talking about.

You should go and talk to Coke. I crack open a little aluminium pressure vessel almost every day!..HAHA

Ideally, you should aim at increasing the combustion air temperature rather than injecting more air. Higher moisture in the fuel and more combustion air reduces your boiler efficiency. I could go on about the combustion process and why hot air is better than more air, but I think you get the idea.

Can anyone tell me where UREA injection is located for NOx comtrol on a bi-drum boiler?

I would be grateful if someone could let me know how to run a macro from an "IF" statment. I guess I am really after the syntax.... =if(a1>b1,run macro1,run macro2) what do I need to replace "run macro" with to make it work? thanks....

This question is way too silly and must be a uni assignment. Only a uni lecturer could have dreamed this one up! Haha

Alf, Have you experiance with SCAH credits or do you just want to see if I have made a mistake? The calculations are done by my boiler simulation program, there is no error in the calculation. There must be a reason why increasing the reference temperature doesnt work. Essentially, the heat...

This one should separate the men from the boys..... When calculating boiler efficiency (chemical heat or fuel efficiency), you can account for a steam coil airheater by either adding a credit to the loss account or by increasing the reference temperature. Both make sense except they give...

Does anyone have experiance with a CE Canada designed "MU" boiler firing oil or gas? I am interested to see if it performs as designed or if it struggles to make steam temperature. Thanks

I agree with vesselguy. I have ordered a few safety valves in my time. What about a back-pressure turbine? Dont they exist? If you are confused about back-pressure and dont think it exists, I think you should get out more. Perhaps it is a term misused rather than a term that doesnt exist.