Lazagna

14 hours ago, Mikey98118 said:

These charts usually have orifice size and PSI amount listed too;some are even interactive. Work backward from the end figures to come up with what you want.

You can also find the amount of air needed for proper combustion for a given fuel, and add that figure into the mix.

Perfect, thanks!

1 minute ago, ThomasPowers said:

If you are trying to figure out the BTUs; then the easiest way to measure  BTUs is to weigh the propane bottle before and after a measured time and convert weight of propane used to BTUs.

I probably should have stated that I want to make sure I know how much air I need to make sure I have when I add a fan/blower.  I want to make sure that I have more than enough air for a given PSI based on the current burner.

I could be overthinking it, but I am thinking that if I know the volume of propane, I can calculate the minimum air required for combustion and then increase from there.  I don't want to add a blower (my estimate is using a hair dryer at this moment) and find out that I have to little air available to the forge.

1 hour ago, Mikey98118 said:

look for a typical fuel BTU chart online.

I'm confused as to how this will help.  Can you explain this more?  I know the BTU of propane, but I don't know how much propane is being pushed through my orifice at a given PSI.

I keep looking for information regarding how to calculate the flow rate of propane knowing the PSI and orifice size.  I have seen several references on the forum, but each one is broken as they are from 2011 that I have found so far.  Can someone point me in the right direction?