The conversion equation you quoted is correct. You have to be careful with the units though. You HAVE to enter the reading in hft3(hecto cubic ft or 100xft3). Most older gas meters (including mine) read in cubic feet (ft3) but the last two digits (usually in read) are ignored in the meter readings. Thus the meter readings read and quoted by the companies are in 100xft3 and NOT in ft3. I think that is where your frightening paradox lies.

If you really want to know more about the gas conversion equation:

1 hft3 = 100 ft3= 2.8317 m3 this explains the first factor.

1.02264 is a "bodge factor" to correct from the nominal (assumed by the company gas temperature and pressure from the "standard values" of 15 °C and 1013 mBar assumed in the calculation of the calorific value

39.3 is the currently quoted "calorific value of gas" by Eon.This converts from M3 to MJ /m3 (MJ stands for Mega Joule, 1 joule = 1 Ws -watt second). Typical values of "calorific value" of natural gas range from 37.5 - 43 MJ/m3 depending on how rich it is on heat generating hydrocarbons (Methane etc.).

Finally the 3.6 divider is supposed to convert from seconds to hours required for the final kWh figure (1h = 3600 s ; the 1000 factor together with another 1000 factor for the kW is cancelled by the mega = 1000000 factor in the calorific value).

I hope that this is all clear to you but if you have any more questions just shout !

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Just this last month changed over to Eon for dual fuel, Energyonline extra saver 5.

As I'm slightly sad I decided to take meter readings each morning for the next few weeks, monitor my usage and set up a spreadsheet to calculate my bills (told you I was sad

)

Just phoned Eon to find out the conversion factor for m3 to Kwh to calculate the gas bill, apparently its as follows

(((Reading x 2.8) x1.02264) x 38.9)/3.6

For an average use per day of 4.6 m3 of gas this gives a quarterly bill larger than some countries national debt

(I'm exagerating slightly, but it is bloody huge

)

Does anybody know what Eon's actual conversion factor is, not sure I can stand the excitement of phoning them again.

Phlik

Originally posted by **Phlik**
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