Question

What is the theoretical mass oxygen transfer per hour assuming 0.5 standard cubic feet per minute (SCFM) oxygen, 96% oxygen transfer efficiency (OTE), and a 50 gallon per minute (GPM) water pump?

Answer 1

Solution

Conversion:  

Assumption: Theoretical mass oxygen transfer per minute = Th

Standard mass oxygen transfer per minute = Ts

Given:

Standard cubic feet per minute mass of oxygen (SCFM) = 0.5

flow rate of pump = 50 gallon per minute

= 50*0.133681 = 6.684 cubic feet per minute

Standard mass oxygen transfer per minute (Ts) = 0.5/6.84

= 0.0748

We know that:-

Oxygen Transfer Efficiency

  

  

   per minute

Theoretical oxygen mass transfer per hour = 0.0718*60

= 4.308 per hour Answer

COMMENT :

Theoretical oxygen mass transfer is asked per hour if it is asked per minute then we should keep the solution as before itself.