paraffin wax deposition and fouling

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APPENDIX 4 THE PRDGR’M TTJBEX AND THE
EXPEPIMENTAL RESULTS Oi’
Ifl iOULANG STUDIES
A
program called TUBEX was developed to process the data obtained
in the fouling studies, Section 4.
The
cooling water and solution flowrates were calculated using
the calioration constants given in Tables A3.3.1 and A3.3.2 in equation
A3 .3
The physical properties of the paraffin wax in kerosene solution
were calculated using the relations given in Appendix I, at the
average bulk temperature.
The appropriate Waither equation constants
were obtained from figure A1.3.
The overall heat transfer resistance was calculated from:
R = T (4.i)
2o
ana was given in icW/m C. The heat flux was ana . he logan hniic
mean :epera;ure ci fference .across tne exchanger.
Prandtl and Reynolds numbers were calculated in the usual way.
Although the progra was made to calculate friction factors, the low
zcnzitivity of the pressure transducer used (see Appendix 3), did not
allow this.