BIOPROCESS ENGINEERING - EXAMPLE 14.1 : In differential centrifugation of cells with diameter D in centimeter, the square of D is given by D x D = [18n ln (RF / RI) ] / [ (RP - RFF) Wt ] where n is the fluid viscosity (poise), RF is the final radius of rotation (cm), RI is the initial radius of rotation (cm), RP is cell density (g / ml), RFF is the fluid density (g/ml), W the square for the rotational velocity in (radians / s) (radians / s), t is the time required to sediment from RI to RF (s). Derive an equation for W as a function for D, n, RF, RI, RP, RFF and t, with the stated units above, in radian & degree.

Answer Posted / kangchuentat

BIOPROCESS ENGINEERING - ANSWER 14.1 : By algebraic formula, W = [18n ln (RF / RI) ] / [ (D x D) (RP - RFF) t ] where W is in (radians / s) (radians / s). One radian is approximately 57.288 degrees, then the W (radian) = (57.288) (57.288) W (degree) or W (in radian) = 3281.96 W (in degree). The answer is given by Kang Chuen Tat; PO Box 6263, Dandenong, Victoria VIC 3175, Australia; SMS +61405421706; chuentat@hotmail.com; http://kangchuentat.wordpress.com.

Is This Answer Correct ?    0 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

For amonia manufacturing process if pressure, temperature would be increase over optimum level what would be happen?And what steps should be taken?

1753


how much maximum power can be generated by 320v, 10kg-cm synchronus motor if shaft is roteted mechanically at 50 to 60 rpm?

1708


Explain what are the disadvantages of using gear pumps?

614


Where the Induced draft, forced draft & balanced draft furnace are to be used? Selection of furnaces are based on which criteria?

3069


y we do not differ b/w atomic mass and atomic wieght? from engrtauseef2008@gmail.com

1643






hello everyone do anyone have interview questions for any chemical industry please email me at

1689


hai can anyone send me soft copy of o.p gupta or tell me downloading link please please at saify_0@hotmail.com

2024


What is a common failure mechanism for above ground atmospheric storage tanks?

656


What is the use of gear pumps in motor?

645


sir, kindly explain to me that how to calculate volume of torrispherical vessel which is used in pharma company ss reactor bottom dish volume. thank u.

2150


Are there any general rules for flushing slurry lines?

622


While there, are many tests available to detect leaks on vessels, is there a technology available to quantify the leak, or measure the flow through a leak?

704


What does capacitor load means? How does it connect?

588


What are the design considerations for a piping system for the transfer of slurries?

695


Are there any general rules that should be considered when designing a slurry piping system?

564