Retrofitting of Industrial Fans
                     Retrofitting of Industrial Fans
Anthea Johnson
Writer at Knowledge-peak.com 
creates content to support 
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Retrofitting is changing one or more parts of an equipment to make 
design modifications so that it improves the effect of existing 
performance. Fan retrofit is a profitable exercise for companies and 
have a great impact on company’s yield, profit and safety. Almost all 
type of centrifugal fans and axial fans can be retrofitted.
Need for retrofitting
•Optimization of existing fans
• Retrofitting of industrial fans involves adding of a component 
to the existing fans system in order to achieve increased 
performance.
• In fans, retrofitting helps in changing the system resistance 
either to increase or decrease it.
If system resistance did not match with the pressure at the best efficiency 
point, the fan will not deliver its best output. System resistance is a kind 
of pressure demanded by system connected to fan for a given flow rate of 
gases.
As the retrofitting is done, in the working area itself an individual can 
have their choices on how to modify the system.
Economic alternative
Retrofitting is an economic alternative as there is no need to buy an entire 
new system. It also involves less time for installation.
Retrofitting involves simple part assembles which does not require skilled 
labor. This requires man power who can work for lesser pay than more 
skilled workers.
Data Access
 Have you ever thought the customer information that is sitting in your 
database is more valuable and can generate good amount of online 
revenues for your business. The site owners can charge for the data that 
they will be sharing with third parties or can deliver messages with 
banners and images in the newsletters on behalf of the advertiser to 
their customers. In this model, the revenues mostly depend upon the 
information that exists in the database because the more number of 
email lists you have, the more emails can be sent to the customers 
regularly.
Regulate pollution
Retrofitting indirectly helps in controlling the pollution as the 
performance of the fan is increased. Due to performance increase, a fan 
will perform more work at the same given input. Secondly, when the fan 
is retrofitted the amount of contaminant gases will be effectively taken 
out of the work place and this helps in regulation of pollution.
Key ways of retrofitting
When the flow of a fan is reduced, rotor and inlet cone are replaced in 
order to enhance flow and pressure for the same input power of an 
industrial fan.
Industrial fan also consists of small parts which are to be modified to 
obtain increased efficiency. The parts which are involved are casing of 
fan,Centrifugal Fan inlet boxes, dampers and silencers etc.
Bearings in fan are one of the most important parts. The life of a fan 
depends on the working condition of bearings. Retrofitting of bearings 
will ensure more life and lesser maintenance.
Industrial fan consists of rotating parts, which cause wear of the material. 
Changing the material of construction of rotor or any other parts of fan 
will result in good wear life.
Retrofitting also involves design changes and modifications for lesser 
noise and power consumption.
Retrofitting is a better alternative to optimize the fan performance. This 
enhancement process is very cost-effective, advantages and requires less 
time span.
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