Central Heating System
Basics One Pipe System
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water is pumped through a single pipe underneath all the radiators, then back to
the boiler for re-heating. Hot water rises into each radiator at one
side of the radiator and the cooler water falls back into the single
pipe on the opposite side of the radiator. The last radiator is always cooler as
the water has already given out most of its heat in the rest of the
radiators These
systems were popular 30 years ago and a lot of them are still working. There is
no restriction to the number of radiators, so they are ideal for industrial use,
but all modern domestic systems use two pipes
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