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heat related pipe run calculations: help with some math

  • 01-07-2017 7:18am
    #1
    Calahonda52
    Registered Users, Registered Users 2 Posts: 12,888 ✭✭✭✭


    Doing some heat related pipe run calculations so would like someone to check my math please.
    Details
    100m run
    nominal pipe diameter 50mm which will do so no need for ID calcs
    Use 3.1417 as "Pie"
    Part A
    So how many litres of water does that hold: my answer 0.196356 m3
    or 196.3 litres or 193.6 kg [ 1:1 is close enough]
    Part B
    What is the energy required to heat this volume of water from 20 degrees C to 85 degrees C.
    Use SHC 4.184 kJ/kg
    My answer in kJ is 53,401 kJ or 14.834 kWh, ignoring heat losses during heating.

    Thanks as always

    “I can’t pay my staff or mortgage with instagram likes”.



Comments

  • #2
    Borzoi
    Registered Users, Registered Users 2 Posts: 2,876 ✭✭✭Borzoi


    Calahonda52 wrote: »
    Doing some heat related pipe run calculations so would like someone to check my math please.
    Details
    100m run
    nominal pipe diameter 50mm which will do so no need for ID calcs
    Use 3.1417 as "Pie"
    Part A
    So how many litres of water does that hold: my answer 0.196356 m3
    or 196.3 litres or 193.6 kg [ 1:1 is close enough]
    Part B
    What is the energy required to heat this volume of water from 20 degrees C to 85 degrees C.
    Use SHC 4.184 kJ/kg
    My answer in kJ is 53,401 kJ or 14.834 kWh, ignoring heat losses during heating.

    Thanks as always

    spot on


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