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THE FRANCO-CROSTI PRINCIPLE. The purpose of the system was to make better use of the heat remaining in the exhaust gases. The firebox gases go through a normal boiler and then through a preheater, which heats the feedwater before it reaches the boiler.
The principle is that after completing its cycle in the first engine, the working fluid (the exhaust) is still hot enough that a second subsequent heat engine can extract energy from the heat in the exhaust. Usually the heat passes through a heat exchanger so that the two engines can use different working fluids.
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Presentation on CFBC Boilers - SlideShare
30/12/2016 · Today, Alde's boilers use the same principle and are at the forefront of efficient design. They have mushroomed in popularity over the last few years. Alde's Compact boiler and flue. Alde's water tank has a capacity of eight litres and can heat very quickly under either electric or gas power.
New Boiler Replacement & Installation Costs 2021 | Boiler
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