Search results for: boilers - Bridge of Knowledge

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Search results for: boilers

Best results in : Research Potential Pokaż wszystkie wyniki (10)

Search results for: boilers

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Search results for: boilers

Other results Pokaż wszystkie wyniki (23)

Search results for: boilers

  • Corrosion of evaporator tubes in low emission steam boilers

    Publication

    Purpose of this paper is to reveal the mechanisms of corrosion processes of outer surfaces of low-emission steam boiler evaporator tubes. Examinations were performed to find the reasons of different corrosion susceptibility of tubes situated at combustion chamber on various levels. Examinations were conducted on several segments of 57 x 5.0 mm evaporator tubes made of 16M (16Mo3) steel grade. Segments were taken from level of...

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  • Assessment of evaporator tubes corrosion in low-emission steam boilers

    Publication

    W artykule przedstawiono wyniki badań rur ekranowych(16Mo3) kotła niskoemisyjnego po jednym roku i dwóch latach eksploatacji. Powierzchnie rur pokryte zostały warstwami natryskiwanymi cieplne - pojedynczą ze stopu 70%Ni 30%Cr i podwójną Ni-30Cr /Al2O3. Rury bez powłok natryskiwanych wykazywały pocienienie ze względu na działanie korozji siarkowej oraz korozyjnego oddziaływania warstwy stopionych soli. Pojedyncza warstwa 70%Ni 30%Cr...

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  • Central heating temperature control algorithm for systems with condensing boilers

    Publication

    - Year 2016

    The problem of control of a central heating system in a small residence is considered. It is assumed that the system is based on a condensing boiler. Since the boiler efficiency depends on a returning water temperature, the proposed control goal is to provide proper air temperature in the residence as well as the lowest possible water temperature. The proposed algorithm is applied to two buildings. Both of them have the same heating...

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  • An approach for estimation of water wall degradation within pulverized-coal boilers

    Publication
    • J. Badur
    • P. Ziółkowski
    • D. Sławiński
    • S. Kornet

    - ENERGY - Year 2015

    The main aim of this paper is to estimate the lifetime of water walls of pulverized-coal boilers at nominal conditions as well as after degradation of water tubes. An approach for a pulverized-coal chamber degradation process has been formulated based on operational and experimental data. This model was formulated using on-line state monitoring of a pulverized coal burner with aim of preventing the fireplace screens from high degradation...

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  • High temperature corrosion of evaporator tubes in low-emission steam boilers

    Publication

    W artykule opisano zjawisko korozji wysokotemperaturowej rur ekranowych kotłów parowych niskoemisyjnych. Przeprowadzono badania rur po eksploatacji. Wykonano badania składu chemicznego zgorzelin. Stwierdzono, że główną przyczyną pocienienia rur na wyższych poziomach jest korozja siarkowa, natomiast na poziomach niższych oddziaływanie stopionych soli.