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Solid is one of the four fundamental states of matter (the others being liquid, gas, and plasma). The molecules in a solid are closely packed together and contain the least amount of kinetic energy. A solid is characterized by structural rigidity and resistance to a force applied to the surface. Unlike a liquid, a solid object does not flow to take on the shape of its container, nor does it expand to fill the entire available volume like a gas. The atoms in a solid are bound to each other, either in a regular geometric lattice (crystalline solids, which include metals and ordinary ice), or irregularly (an amorphous solid such as common window glass). Solids cannot be compressed with little pressure whereas gases can be compressed with little pressure because the molecules in a gas are loosely packed.
The branch of physics that deals with solids is called solid-state physics, and is the main branch of condensed matter physics (which also includes liquids). Materials science is primarily concerned with the physical and chemical properties of solids. Solid-state chemistry is especially concerned with the synthesis of novel materials, as well as the science of identification and chemical composition.

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  1. M

    Solid fuel back boiler and pipe stats

    Hey a question about solid fuel boilers and pipe stats. If you had a house with central heating and the house only got luke warm the pump seemed to be running (vibrating when touched) checked pipes coming from boiler they were hot could hold them for say 2 seconds so not steaming. The only...
    • mrlennie
    • Thread
    • back boiler boiler boilers central central heating system hot oil pipe pipes pump s plan solid solid fuel stats y plan
    • Replies: 1
    • Forum: Plumbing Jobs | The Job-board
  2. J

    Solid Fuel Central Heating boiler

    Hi guys, first post on these forums. I have a multifuel stove which can be converted into a boiler via a bolt-in 3-4kw 1 input/1 output boiler (picture attached), this is available on Ebay. I am undecided which is the best way to plumb it in. I know 3kw is relatively small, but I was planning in...
    • jayjayjay
    • Thread
    • boiler boilers bolt central central heating system fed gravity hot hot water indirect oil plumbing pump radiators shower sink solid solid fuel tank valve wall water work
    • Replies: 6
    • Forum: Plumbing Jobs | The Job-board
  3. S

    Twinning systems gas and solid fuel advice

    Hi I am a plumber and heating engineer/drainage engineer, and now a day’s only do my own plumbing, as concentrate on clearing drains. I have a system boiler wouster Bosch high flow 400, open vented, and I intend to add a solid fuel stove boiler in to the system. I will stick a cylinder in the...
    • stevenowen123
    • Thread
    • 22mm 28mm advice boiler central central heating system cold cold water cold water tank cylinder drainage expansion gas gas boiler high open vented pipe plumbers plumbing pump solid solid fuel systems tank tee water work
    • Replies: 0
    • Forum: Plumbing Jobs | The Job-board
  4. M

    Solid Fuel Two pipe Heating

    I hope someone can help me with this, I am fitting an Aarrow Stratford 7 with back boiler which has two pipe connections as it has been used for HW only, my question is can I use the two pipe system to do HW and heat a downstairs rad, using the rad as the heat sink for excess heat to the HW. I...
    • mally46
    • Thread
    • bathroom boiler central heating system connections control cylinder fitting gas heater high leak mains pipe pump sink solid solid fuel system tank temperature valve water
    • Replies: 2
    • Forum: Plumbing Jobs | The Job-board
  5. J

    Trianco TRG 45 Eurostar Solid Fuel.

    I had TRG 45 for 30 yrs ,no problems. The new one 18mths ago is not running the same . Any experts out there.I think the fuel is not as good( Non Clinkering Anthracite) but it seems to needs fuel to often or it will die.
    • Jazz Head
    • Thread
    • air boiler boilers central central heating system city electric gravity hetas high leak merchant merchants price problem pumps secondary solid solid fuel tank temperature trianco water
    • Replies: 15
    • Forum: Plumbing Jobs | The Job-board
  6. M

    Solid fuel backboiler - drilling?

    We have a customer with a solid fuel (coal) fire and old fashioned back-boiler behind it. We are fitting a new combi system but the customer wants to keep the fire. Obviously the BBU needs to be safe and I have heard of them being 'drilled' to make sure there is no pressure build up inside when...
    • maintain2let
    • Thread
    • backboiler boiler combi drilling fitting flow hot inside no water oil pressure remove safe solid solid fuel steam system water
    • Replies: 4
    • Forum: Plumbing Jobs | The Job-board
  7. S

    Whole New Solid Fuel Heating - Thermosyphon Height & Thermal Store Size?

    Hello! I am renovating a cottage and am starting from scratch with the heating system because the original boiler consisted a massive iron tank with 5 immersion heaters in it, which cost a fortune to run and wasn't all that effective, and the radiator circuit is very very old and needs to be...
    • Simon1
    • Thread
    • 28mm boiler central heating system circulation cylinder gas gas boiler gravity height hot hot water internet paint pipe problem radiator radiators shape size solid solid fuel store tank thermal thermal store wall water web whole work
    • Replies: 2
    • Forum: Plumbing Jobs | The Job-board
  8. T

    Linking solid fuel stove to central heating

    Gents, Your advice and experience would be greatly appreciated by this keen amateur. I want to put a wood burner with a back boiler onto the outside wall of a single story extension and then link it into the current vented gas central heating system of the rest of the house. I believe in...
    • Tank
    • Thread
    • boiler boiling building central central heating system circulation cistern condensing copper diy expansion flow gas gravity hot hot water job noisy parts pressure pump solid solid fuel stove system vent water
    • Replies: 6
    • Forum: Plumbing Jobs | The Job-board
  9. L

    solid fuel query.

    Could anyone tell me is there much work involved in taking out a HAMCO solid fuel stove and replacing it with one of those pot belly solid fuel heaters. The Hamco stove does hot water and heats the rads as well,and is linked up to an oil boiler. Is it just a matter of draining the system down...
    • lightfoot
    • Thread
    • boiler bungalow central central heating system cylinder flow gravity hose hot hot water job oil open vented pipes plumber plumbing query solid solid fuel system trade water work
    • Replies: 4
    • Forum: Plumbing Jobs | The Job-board
  10. P

    Solid fuel boilers, UK v Europe

    Lets see what my peers think of this, you will have to open the links (marked "Produit") to see what I am on about, never mind the French, pictures speak louder than words Solid Fuel Boilers, and the differences between, Open vented central heating systems, and Closed or Pressurised central...
    • Plouasne
    • Thread
    • air bar boiler boilers central central heating system circulation cold cold water expansion gas inside oil open vented pipe pressure pressurised pump radiator rubber solid solid fuel tank valve vessel water work
    • Replies: 3
    • Forum: Plumbing Jobs | The Job-board
  11. R

    solid fuel pipework

    hi guy, new to this first thread... just wondering about the pipewrk from solid fuel stove, my question is, would it b ok to run flow on the gravity circuit, from stove to attic, then back down from attic space to coil on cylinder, and return back from coil to boiler, would this work
    • rascla
    • Thread
    • boiler central heating system circulation cold combi combination costs cylinder efficiency funny gravity high hot hot water job loft pipe pipe size pipework plumbing solid solid fuel tee trade water work
    • Replies: 17
    • Forum: Plumbing Jobs | The Job-board
  12. O

    solid fuel.

    Hello all. I have a 300l solar hot water cylinder, with 2 coils, one is used for solar, 1.5 bar, the other oil fired for the back up in the grey days , thats at 1.5bar,I would like to incorparate a wood fired stove with back boiler in the system, It is a viterous lined steel tank , I will...
    • oap67
    • Thread
    • bar boiler cylinder damage heater hot hot water hot water cylinder solar solid solid fuel system tank vent water
    • Replies: 0
    • Forum: Plumbing Jobs | The Job-board
  13. B

    free!!!!!!! solid fuel stove worth £2000

    all i actually have to offer u is a question ..no free stove ..sorry .the question is free though!! new marketing ploy for posts..lies!!!!!! anyone know anything about independent solid fuel stoves [hand fed] large stoves that are fed once every other day and regulate there own burning...
    • buffy27
    • Thread
    • boilers free heating hot hot water kitchen rayburn solid solid fuel stove water worth
    • Replies: 5
    • Forum: Plumbing Jobs | The Job-board
  14. P

    Solid fuel C/H safety devices, & exp tanks

    Just trawling the net for somebody on a French forum, and came across these, thought that some of them might be of use to somebody who is doing solid fuel central heating, and wants to cover their back, if there is a power cut or pump failure, when the boiler is well alight produit...
    • Plouasne
    • Thread
    • boiler boilers boiling branch central central heating system cold cold water combi condensing cylinder drain fitting gas job overheat power pump safe safety solid solid fuel tank tanks valves water work
    • Replies: 2
    • Forum: Plumbing Jobs | The Job-board
  15. S

    disconect solid fuel back boiler

    Is it possible to disconect a solid fuel back boiler after draining down, in the cuboard next to the fire, ie cut the pipes, let what little water ramains in the back boiler burn off, and then use the fire without the back boiler, all the pipe work will be reconected to a alternative heat source...
    • spencer
    • Thread
    • air back boiler boiler google install london oil parts pipes pressure sealed solid solid fuel steam water work
    • Replies: 5
    • Forum: Plumbing Jobs | The Job-board
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