1．How to choose the type of fans?
The applications of
fans can be found almost in every field of country
economy, so it is very important to choose the fit fans
and the feat fans can increase the efficiency of
production, improve the environment, enhance the
benefit. Generally, we can choose the appropriate fans
as following:
A. The principle of choosing
1) Find out the manufacture of
fans in homeland and the situation of productions`
quality, before choosing, such as the specification and
brand of goods.
2) Choose the different fans
for special purposes basing on the difference of
transportation medium, for example the physical or
chemic fans.
3) Pick out the fans which are
more efficient, of smaller size and larger range of
regulation, if there are two or more types of fans.
4) The fans which will be
chosen should be fit for the old equipments, easy to
install and secure to run completely.
B. Prepare sufficiently based
on the principle of choosing.
1) Confirm the actual flow
needed by pass.
2) The pressure to supply or
lead fans should be measured practically and figure out
the total pressure.
3) When fans are running, pick
the highest temperature; and before that, it is required
to measure.
4) Go further to check the
drawing and determine the outer radius of air convey and
induction’s impellers.
5) If use the old motor, it is
necessary to check the responding rate of revolution and
capacity.
C. Methods of choosing
Choose according to the
standard curve. |
