In preparing this manual, I have attempted the monumental
task of bringing together under one cover all the pertinent
information necessary to provide a practical approach
to the entire subject of fan engineering as it is applied
to the cooling tower.
Several factors inspired
me to write this manual. First and foremost was the
fact that to my knowledge such a practical manual had
never been written. Second was the fact that I had to
repeat the same answers or to write a letter for the
cooling tower engineers whenever I was asked of questions
on the fan engineering. The questions for information
on this subject were frequently asked to me by cooling
tower engineers.
The first step was to arrange
all the answering letters corresponded with the cooling
tower engineers during that time. To make a systematic
view of manual, I had to read and study some hundred
or more references scattered through many different
sources. Whenever I was unable to resolve the contents
of a particular reference, and this did occur several
times, I corresponded with the fan engineers of Hudson
or author for explanation. This proved most valuable,
as all the fan engineers at Hudson were most co-operative.
In addition to the above
reference material, I have collected for my own use
over the years a vast amount of information of great
practical value derived from personal experience in
the aircraft design. A great deal of the information
contained in this manual has never been published before
to my knowledge.
It is intended that this
manual be a handbook for the cooling tower engineers
and operators. I have tried to present this information
so that anyone with a background of designing or operating
the cooling tower will have no difficulty in understanding
the manual.
Five years have been passed
since the publication of the first edition, and only
four months have been passed since the publication of
the sixth edition. However the amount of changes in
the contents has been much greater since then than in
the first edition. The inspiration that gave me the
enthusiasm needed to produce a seventh edition was probably
caused by several factors. KEPCO Anyang Combined Heat
& Power Plant had become more concerned about the
cooling tower noise control, and some chemical &
petrochemical firms had pushed me to suggest a way for
the energy saving. Also, the fan failure in operation
turned out to be much worse in the summer of 1994 that
anyone had imaged. All of these situations caused me
to prepare this seventh edition some earlier.
Developing this seventh edition
turned out to be enormous amount of work for the engineers.
I had to work long stretches of 12-14 hour days for
four months, during which time I had to take care
of my consulting practice. However, as is always the
case, the end result is most rewarding because I believe
my efforts will help many people.
I take this opportunity to
thank all of cooling tower engineers and operators out
who have given the motivation to me. I hope this work
will please you. I believe that this will provide an
understanding of the basic design criteria to enable
you to better evaluate the performance of many designs
available. For the readers, one example for the cooling
tower thermal design and fan rating is presented throughout
this manual for giving enough confidence to you. If
any questions on this issue, please feel free to contact
me.
September
8, 1994
Chungrok ENC Company
Oick Kwon, Rep. Consultant
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