The water line from the street to my house is 1 inch diameter and made of PVC (i.e. smooth). The line is roughly 450 ft long. The water pres

Question

The water line from the street to my house is 1 inch diameter and made of PVC (i.e. smooth). The line is roughly 450 ft long. The water pressure in the line at the street is 130 psig. If I flow 10 gpm through the pipe, what pressure would I expect when I get to my house. My house is 10 ft higher in elevation than the water line at the street

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Hồng Cúc 5 years 2021-09-05T02:21:02+00:00 1 Answers 29 views 0

Answers ( )

  1. linhdan
    0
    2021-09-05T02:22:43+00:00
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    Answer:

    The right solution is “126 Psi“.

    Explanation:

    The given values are:

    P₁ = 130 psig

    i.e.,

       = 130\times 6.894

       = 896.22 \ Kpa

    or,

       = 896.22\times 10^3 \ Pa

    Z₂ = 10ft

        = 3.05 m

    \delta = 1000 kg/m³

    According to the question,

    Z₁ = 0

    V₁ = V₂

    As we know,

    ⇒  \frac{P_1}{\delta_g} +\frac{V_1^2}{2g} +Z_1=\frac{P_2}{\delta_g} +\frac{V_2^2}{2g} +Z_2

    On substituting the values, we get

    ⇒  \frac{P_1}{\delta_g} +0+0=\frac{P_2}{\delta_g} +0+Z_2

    ⇒  \frac{896.22\times 10^3}{1000\times 9.8} =\frac{P_2}{1000\times 9.8} +3.05

    ⇒  P_2=866330 \ P_a

    i.e.,

    ⇒       =866330\times 0.000145

    ⇒       =126 \ Psi

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