natural gas flow rate

Old 08-19-10, 03:19 PM
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natural gas flow rate

So heres my situation. I just bought a new house that had all the appliances pulled out (foreclosure), so I need to buy a new oven/range. Having worked in a few commercial kitchens I have come to really appreciate commercial grade ranges.

My problem is that the commercial grade ranges are in the neighborhood of 200,000 BTU/hr. From my calculations I will need a natural gas flow rate of about 3.5 CFM for the worst case scenario of all burners and oven running full blast. From what I've seen most residential grade ranges are 40,000 - 85,000 BTU/hr

What flow rate could I expect from a normal residential kitchen gas line? How can I verify my connection?
Would it be unsafe to connect such a stove to a lower rate connection?
Does the house usage as a whole need to be taken into account? There are two boilers and a water heater as well.

Calculation I used:
215000 BTU/hr of range
1030 BTU per cu.ft. natural gas. (Is this even right?)

215000 (BTU/hr) * 1/60 (hour/minutes) * 1/1030 (cu.ft./BTU) = 3.47896 (cu.ft./minute)

Thanks in advance!
Old 08-20-10, 04:15 PM
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Don't you think it would be better to ask the local gas company those questions? You don't want guess work.

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