Acta Technica 105. (1993)

1-2. szám - Fodor, L.–Gősi, P.–Kostka, P.–Tóth, J.: On-load mechanical cleaning of heat exchangers by means of brushes

Acta Technica Acad.Sei.Hung., 105(1-2), pp. 3-!7 (1993) ON-LOAD MECHANICAL CLEANING OF HEAT EXCHANGERS BY MEANS OF BRUSHES FODOR, L.1 - GÖSI, P.2 - KOSTKA, P.3 - TÓTH, J.4 (Received: 3 January 1991) Described here is a continuous brush-type heat-exchanger cleaning system developed and used for the condenser of a 4.5 MW steam turbine of TVM, a chemical plant. A measurement system has been provided not only for the unit equipped with the cleaning system but also for another unit of identical construction but operated without on-load cleaning of the condenser so that, by comparison, the economic efficiency of on-load cleaning can be determined. NOTATIONS pipe ID pipe 0D equivalent pipé diameter 0^. = (0Q - D^ )/ln(D^/0j.) pipe wall thickness coefficient of thermal conductivity of pipe internal heat transfer coefficient (water-side) external heat transfer coefficient (steam-side) thermal resistance due to fouling overall heat transfer coefficient inlet water temperature condensing temperature logarithmic mean temperature difference condenser end-temperature difference ''"Fodor, László, H-2074 Perbál, Lakótelep C/7, Hungary 2 Gósi, Péter, H-1025 Budapest, Felsózöldmáli út 5/b, Hungary 3Kostka, Pál, H-1031 Budapest, Csónakház u. B, Hungary 4 Tóth, Dános, H-5000 Szolnok, Meder u. 20, Hungary Akadémiai Kiadó, Budapest

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