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Basically you can't
The whole point in a fan is the inefficiency that is used to push the air forward, the only efficient type of fan you could find would be the propeller of an aircraft, this is the most efficient form of fan that moves huge volumes of air with minimal energy input.
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∙ 12y ago
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How do you calculate the efficiency of the car?
check here http://www.wonderhowto.com/how-to-calculate-cars-fuel-efficiency-mpg-084812/
How do you calculate cooling coil efficiency?
Calculate condenser and coils
How do you calculate the efficiency of vapour absorption machine?
how to calculate the vapour absorption mechine efficiency and per TR steam consumption
How can you calculate efficiency?
b**ch
How you can calculate HRSG efficiency?
b**ch
What is used to calculate mechanical efficiency?
work
How do you calculate 1050 miles in gas price for a trip?
You need to know the fuel efficiency of the vehicle when you are driving (driving styles do make a difference).Use the fuel efficiency to calculate the amount of gas you will need and then use the gas price to calculate the cost of fuel.You need to know the fuel efficiency of the vehicle when you are driving (driving styles do make a difference).Use the fuel efficiency to calculate the amount of gas you will need and then use the gas price to calculate the cost of fuel.You need to know the fuel efficiency of the vehicle when you are driving (driving styles do make a difference).Use the fuel efficiency to calculate the amount of gas you will need and then use the gas price to calculate the cost of fuel.You need to know the fuel efficiency of the vehicle when you are driving (driving styles do make a difference).Use the fuel efficiency to calculate the amount of gas you will need and then use the gas price to calculate the cost of fuel.
Calculate indirect labor efficiency?
There are different ways to calculate labor efficiency, I normally use "total hours paid divided by total yielded productivity" This will give u an idea of the gap in efficiency. Thanks, Farhan
What will tell you the efficiency of a chemical reaction?
You need to calculate the yield of the reaction.
How do you calculate power if flowpressure and efficiency is given?
formula are given at www.calculatoredge.com
How theoretically can calculate volumetric efficiency in diesel engines?
1282kg/s
What is the formula to calculate percent efficiency?
(work out/work in) x 100
