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volume

Volume is a scalar quantity expressing the amount of three-dimensional space enclosed by a closed surface. For example, the space that a substance (solid, liquid, gas, or plasma) or 3D shape occupies or contains. Volume is often quantified numerically using the SI derived unit, the cubic metre. The volume of a container is generally understood to be the capacity of the container; i.e., the amount of fluid (gas or liquid) that the container could hold, rather than the amount of space the container itself displaces.
Three dimensional mathematical shapes are also assigned volumes. Volumes of some simple shapes, such as regular, straight-edged, and circular shapes can be easily calculated using arithmetic formulas. Volumes of complicated shapes can be calculated with integral calculus if a formula exists for the shape's boundary. One-dimensional figures (such as lines) and two-dimensional shapes (such as squares) are assigned zero volume in the three-dimensional space.
The volume of a solid (whether regularly or irregularly shaped) can be determined by fluid displacement. Displacement of liquid can also be used to determine the volume of a gas. The combined volume of two substances is usually greater than the volume of just one of the substances. However, sometimes one substance dissolves in the other and in such cases the combined volume is not additive.In differential geometry, volume is expressed by means of the volume form, and is an important global Riemannian invariant.
In thermodynamics, volume is a fundamental parameter, and is a conjugate variable to pressure.

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  1. B

    Trevi CTV volume control handle removal

    I'm removing a Trevi CTV but struggling removing the volume control handle. The temperature control knob is removed but I can't see how to remove the volume control handle. It won't budge. Does it just clip off?I Any help would be appreciated Thanks
  2. T

    Small volume of hot water

    I’ve a conventional gas boiler and unvented water tank which is probably about 500l; it’s two mètres tall and about a meter across. I get good hot water pressure at a good temperature (it’s set at 60c) but only enough to fill about 10cm of the bath before it runs cold. Does anyone have any...
  3. S

    How can I improve Hot Water pressure and Volume throughout the house?

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  4. I

    Gas volume calculation

    hey Guys I wonder if someone could help me out. I wanted to find out if I could work on this domestic installation. It’s a house with 2 boilers 24 kw each so 48 in total, the gas meter is a g10 which I believe can be used as domestic and commercial. The gas pipe is run in majority 28 mm at 12...
  5. Rob Foster

    Condensing Boilers - what volume of codensate is discharged

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  6. D

    Advice required: Heating a large volume of water with LPG Gas boiler

    First time posting on here and I am after some help and advice on a project I have ongoing at home - a bit cheeky I know but as they say around here ‘Shy bairnes get nowt’! My children (10 and 8 at the time) were lucky enough to be given an above ground 15ft round swimming pool from some...
  7. G

    Request for advice re a Trevi boost shower (stuck "clutch").

    The volume control of my Tevi boost shower has stopped turning easily. It is now so difficult to turn off the cold supply that I'm turning that off via the isolation valve rather than the shower. It also takes many turns of the volume control to get the shower hot. It doesn't seem to be the...
  8. E

    Water piping project

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  9. S

    Balancing heating system

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  10. P

    Large volume of air in 1970's Baxi Bermuda Ch system. Help with fault finding please!

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  11. T

    estimated the water volume

    How can I estimated the water volume of underfloor heating? so as to size the correct expansion vessel? I don't know the exact length of pipework that's been installed as i didnt install it Thanks
  12. B

    High volume water heating

    Can someone please tell me, what would be the cheapest method of heating 36oC water to 45oC at the rate of 80 Litres per minute for 15 minutes and then maintaining this temperature for an hour? All to be repeated every hour. I will have multiple 1200 Litre baths that will fill within 15 minutes...
  13. B

    Easy way of working out a system volume ?

    Hi all. I want to give my central heating system a dose of cleaner. Host of the the cleaners I look at spec and mount of cleaner per system volume. How do you estimate the capacity of a system? I have a mix of UFH and 7 rads spread out over a bungalow. I have no idea how much water is in it to...
  14. L

    gas pipe volume

    Can any body give me a link to gas pipe volume calculation thanks
  15. Scott_D

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    Does anyone have a chart for gas pipe volume for commercial sizes? I need info for 54mm to 108mm stainless steel or copper pipe, Volume of gas per meter of pipe. I cant find my book that has it. Thanks
  16. M

    Ideal pressure for large commercial heating system

    Got a heating system in a large commercial premises to look at, its had a leak and the pressure has dropped to almost nothing. There is an O&M manual for the system but it does not state what the design pressure is for it was, is it likely to be the same a domestic installs 1 - 1.5 bar or...
  17. spanner

    Test installation volume HELP For ACS

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  18. A

    not enough flush power?

    Hi chaps, Apologies if going over old ground but this is one I get from time to time - usually an OAP who says the flush is not working properly. On digging a little deeper it turns out the flush valve is working OK but occasionally does not wash everything away. What do you guys do in this...
  19. hammers4spanner

    pipe volume

    Seeing alot of stainless mapress these days on installs and curious if this is similar to barrell with delivering volume of gas to an appliance or is it more same as copper with volume??
  20. J

    what is the volume of a U6 meter

    I want to see who knows the right answer as I struggled with this on my acs exam and will hopefully teach people something new and see how many people actually know...
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