How to compute the capacity / Flow required of a centrifugal blower
I have to decide the capacity OR Flow required of a centrifugal blower having a heat exchanger(332KW) at the exit of the same. Same will be installed with a chamber (Dryer unit) through which stainless steel strip will be passing @ 25 MPM. Specifications of the SS strip is :- 1300mm Wide (max) X 2mm thk (max). It will be coming to the dryer unit with processed condition through degreasing unit means it will be wet with both faces (upside & downside).
Servise media specifications for centrifugal blower is air (4 deg. C @ winter days & 45 deg C @ summer days).
Please help…….
There is a lot information you need to determine the total air flow from your blower and the particular advice become an engineering recommendation, which is beyond the scope of this forum.
With that said I can give you a little guidance as to the items you must consider:
1. Are you expecting the air to be the primary medium to transfer the heat and moisture from the metal parts?
2. How much total water or other evaporated liquid will you be removing form the systems with the air.
3. What are the initial conditions of the air including total moisture and temperature? Just knowing the temperature is not enough.
4. What is the allowable or anticipated condition of the air (temperature and moisture content) exiting the system?
Any good manual on process drying should be able provide you with the detailed calculation process do determine the size of the system
Niel Leon
engineering.com
Dear Sir, This is OK. But can you please tell me how to calculate the amount of air required to generate 38.22 KW of heat energy to evaporate water from the strip.
As i had calculated amount of water on the strip as flow rate (0.546 cub. mtr / Hr) and the total heat energy required to evoporate the same is 38.22 kW.
And also as you had asked, Yes i’m trying to evoporate water with the help of hot air only.
OR can you please provide me any Manual??
My e-mail id is :- surender.thakur06@gmail.com
A good starting point would be a Psychrometric Chart. Below is a link to Wikipedia as a starting point.
Niel
