Post a New Question

Physics

posted by .

Many hot-water heating systems have a reservoir tank connected directly to the pipeline, so as to allow for expansion when the water becomes hot. The heating system of a house has 74 m of copper pipe whose inside radius is 9.10 10-3 m. When the water and pipe are heated from 20 to 75°C, what must be the minimum volume of the reservoir tank to hold the overflow of water?
m3

  • Physics -

    The volume of the pipe is
    pi R^2 L = 1.93*10^-2 m^2 = 19.3 liters

    Calculate how much that volume of water increases when being heated from 20 to 75 C. You will need the bulk thermal expansion coefficient of water. It varies a lot from 20 to 75 C, but a suitable mean value is 4*10^-4 K^-1. See
    http://hypertextbook.com/physics/thermal/expansion/

    delta V = V*4*10^-4*(75 - 20)
    = 0.43 liters

    That volume expansion will be the minimum reservoir volume needed.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. hot heating systems

    I don't know what heats the walls of a firebox, but i know that it is either air or water! Nearly always, it is hot gases that flow in the air box of a fireplace that heats the walls. Water would be dangerous, as if it boiled, pressures …
  2. Physics

    Many hot-water heating systems have a reservoir tank connected directly to the pipeline, so as to allow for expansion when the water becomes hot. The heating system of a house has 74 m of copper pipe whose inside radius is 9.10 10-3 …
  3. Physics--Pressure

    a house at the bottom of a hill is fed by a full tank of water 5m deep and connected to the house by a pipe that is 110m long at an angle of 58 from the horizontal. a) determine the water gauge pressure at the house b) how high could …
  4. Physics

    A copper pipe with an outer radius of 0.011 m runs from an outdoor wall faucet into the interior of a house. The temperature of the faucet is 4.4° C and the temperature of the pipe, at 3.1 m from the faucet, is 24° C. In fourteen …
  5. Physics

    a) Family Smith has already installed PV in their house. Now, they also want to cover their needs for warm water with solar energy. For this, they consider having a solar thermal water heating system. Considering that the need for …
  6. Solar Energy Please Help

    a) Family Smith has already installed PV in their house. Now, they also want to cover their needs for warm water with solar energy. For this, they consider having a solar thermal water heating system. Considering that the need for …
  7. physics

    A house at the bottom of a hill is fed by a full tank of water 5.0 m deep and connected to the house by a pipe that is 110 m long at an angle of 58° from the horizontal (Fig. 13–48). (a) Determine the water gauge pressure at the …
  8. Science

    I really need help in Science. Right now in science we are doing renewable energy. For the assignment we have two choices, a house or car of the future, I decided to do a house. The question is, "How could renewable energy sources …
  9. physics

    A copper pipe with an outer radius of 0.010 m runs from an outdoor wall faucet into the interior of a house. The temperature of the faucet is 3.3°C, and the temperature of the pipe, 3.0 m from the faucet, is 25°C. In fifteen minutes, …
  10. Physics

    Many hot-water heating systems have a reservoir tank connected directly to the pipeline, so as to allow for expansion when the water becomes hot. The heating system of a house has 57.4 m of copper pipe whose inside radius is 7.52 x …

More Similar Questions

Post a New Question