DOI: 10.14489/td.2016.05.pp.053-054

Moiseev А.А.
MASS ESTIMATION OF THE HIGH TEMPERATURE SEDIMENTS ACCORDING TO THE INDIRECT MEASUREMENTS
(pp. 53-54)

Abstract. The existing methods of thermal stability investigation are insufficient satisfactory on precision and reliability. To improve these methods it is possible to use some flowing methods based on a classical model of the high temperature sediments forming at oils leaking through a tubular heater. In particular, this approach realized in desk-size stand HiReTS is used for thermal stability determination in the turbulent oil flow. The peculiarity of the method is related with scanned pyrometer use for estimation of axial temperature distribution along a tubular heater. The temperature drop in this situation is dependent on sediments thickness on the inner heater surface. The oil thermal stability is now estimated on temperature drops sum for the given points. It is interesting whether we could use these data as the indirect measurements for evaluation of the high temperature sediments characteristics. The considered mathematical model represents the modification of a classical model of the high temperature sediments formation at oil product leaking in a heated pipe. It is based on the assumption of a heat balance between the powers of heating and heat sink to the oil flow. This balance allows to perform recalculation of the measured temperature gradient into the sediments thickness and can be used for the sediments mass estimation in these conditions.

Keywords: oils, thermal stability, high temperature sediments, tubular heater, thermal balance, HiReTS, temperature drop.

 

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