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Join Date: Jul 2008
Location: Clover, SC / Richmond, VA
Posts: 26
#5
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Re: A valid formula for calculating a customer's usage factor for natural gas???

05/13/2009 7:28 PM

Thank you. That is a heap more info than I had before; due to friction loss in that long run of pipe, the pressure needs to be high to get an adequate volume of gas to the appliances.

One chart I looked at (and there are several used to size fuel gas pipe) shows that for 1" outside diameter (OD) schedule 40 black steel pipe (1.049" inside diameter) having a total equivalent length of 2000 feet (That is the 1300 feet times a 1.5 factor for losses thru fittings + 50 feet) the volume of gas that can be moved thru that pipe at 10 PSI with a 10% pressure drop goes from 3259 cubic feet 100 feet from the beginning down to 443 cubic feet at 2000 feet from the beginning. I don't know all the details (As in I haven't seen a sketch).

So YOU pay the gas company for them to get the gas to your house. I see your point. So, the gas company's philosophy (Apparently) is that once the gas pipe passes your property line, the gas in that pipe becomes yours, and you are responsible for the economic impact of the forces of nature/physics on the gas in that pipe.

I can see their point as well. One improvement for your costs would derive from moving the meter up to the house.

Good luck!

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