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| One or two pipe Type Heating System |
Will radiators give the same output if fitted to 'one pipe' or 'two pipe' systems ?
No. A radiator output depends on it's temperature and this is always higher with 'two pipe' systems, rather than 'one pipe' systems. In a 'two pipe' system, if properly balanced, every radiator will have the same 'mean' (or average) temperature, normally around 75 deg C. With a 'one pipe' system, every radiator progressively loses temperature around the system and to select the correct size of radiator, it's temperature has first to be calculated. As a 'rule of thumb', a 'one pipe' system with say six radiators on the 'loop' will lose 2 deg C mean temperature at every radiator.
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