TECHICAL Series MATHEMATICS • INFORMATICS • PHYSICS Series PHILOLOGY Series ECONOMIC SCIENCES Sereies EDUCATIONAL SCIENCES Series LAW AND SOCIAL SCIENCES Series
Analysis of the Surface Roughness and of the Joint between Tubes and Tube Sheets of a Heat Exchanger
(Analiza rugozităţii suprafeţelor şi a îmbinării dintre ţeava fascicolului tubular şi placa tubulară a unui schimbător de căldură)
Vol LXIII • No. 2/2011
Mădălin Iancu
OMV - PETROM S.A., Ploieşti, Romania,
e-mail: madalin.iancu@petrom.com

 Keywords   heat exchanger, tube to tube sheet joints, loads.

 Abstract
In the present paper, it has been studied the behavior of joints between tubes and tube sheets of a heat exchanger (with the analysis of the thermal expansion coefficient between the tubular element and the tubular plate). Two types of surfaces have been used, one smooth and one which had a groove (in the tubular plate). Surface roughness was also analyzed before and after jointing.

 Rezumat
În prezentul articol s-a studiat comportarea unei asamblari prin mandrinare dintre teava fascicolului tubular si placa tubulara a unui schimbator de caldura (cu analiza coeficientului de dilatare termică dintre elementul tubular si placa tubulara). Au fost folosite doua tipuri de suprafete, una neteda si una in care s-a practicat o canelura (in placa tubulara). Totodata, s-a analizat si rugozitatea suprafetelor tevilor inainte si dupa mandrinare.



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