paraffin wax deposition and fouling

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5,5 wocrinentsl Resuts
with fingers or allow dirt to adhere to it.
the plate was wiped dry, every care being taken not to touch it
was then placed in a carbon tetrachioride bath The pate was
a tissue soaked in carbon tetrachloride
0 The reativel-i cea: tlate
— L9 —
5.5,1 ±ntrocuction
usea in tie ouing stud:es. Preznary tests saowe that a O
cental cata representatve of tie enavour o. tne heat excnan;crs
er cent paraffin wa: in kerosene solution woua cc suitao.e. Sacn
resoved severa taites :ron the cata to cc wipea wit:.. a cean ;ssue.
a so±ution wouc. cc conparace to the one usea in runs —2
and 29°C, resectivel-.
bien tne pate was clean t was &roc cy a tissue ana pacan In a
the average cooling water and solution bulk ter:.peratures were 6°C
fresh kerosene bath. efore beTh; back in tne sition duct
cy waer . n tnese runs the concentraton was 9,o er cent ana
tenperature of the cooling water ::uch below rco tentarature.
circulation water tez’erature was therefore naintained at ‘i5°C at
above the cloud :oint. The exDeri:Letai tines were acut 2 hou:s
rate selected gave a C c.g differential head aSross the soThtion
orifice aeter. ca Taba .5,2 the average value for tie
coefficient in euauion .5, was evaluated as 0.0355. The
The urpose of the deposition stu&ues was to obtaIn n;eri—
in all the e::DerThentai runs the bulk tenuerature was kctt 5°C
wperience snowec. unat it wouaa cc diz:cut to see; t.ce
—
—.d 1. Z. — _.
to a ancs nuacer o: aouu tn an
the ezçerinenuaticn was very tine ccnsu;.’Lng, only one
_. fl. t’ ‘-.l-. — 0
detosiffon duct was investigated. The