Questar Gas - Good Practices for Gas Piping and Appliance ...
Questar Gas - Good Practices for Gas Piping and Appliance ...
Questar Gas - Good Practices for Gas Piping and Appliance ...
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just selected, determine the gas dem<strong>and</strong> <strong>for</strong> the outlet. If<br />
the exact figure of dem<strong>and</strong> is not shown, choose the next<br />
larger figure in the horizontal line.<br />
(f) Above the dem<strong>and</strong> figure will be the correct size of gas<br />
piping.<br />
(g) Proceed in a similar manner <strong>for</strong> each outlet <strong>and</strong> each section<br />
of gas piping. For each section of piping, determine the<br />
total gas dem<strong>and</strong> by that section as follows (using an<br />
assumed gas content of 890 Btu/Cu. Ft.).<br />
EXAMPLE OF SIZING A HOUSE PIPING SYSTEM<br />
FIGURE 4<br />
SOLUTION AND EXAMPLE: (Rated Input/890 Btu/Cfh)<br />
(1) Maximum dem<strong>and</strong> <strong>for</strong> outlet “A” 34 CFH<br />
Maximum dem<strong>and</strong> <strong>for</strong> outlet “B” 28 CFH<br />
Maximum dem<strong>and</strong> <strong>for</strong> outlet “C” 84 CFH<br />
Maximum dem<strong>and</strong> <strong>for</strong> outlet “D” 153 CFH<br />
Total Dem<strong>and</strong> 299 CFH<br />
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