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Careful consideration of the bioreactor agitation and aeration system is required in order to maintain a homogeneous environment and provide sufficient oxygen transfer rates to meet cellular metabolic requirements.
Both agitation and aeration need to be considered together as they have an influence on the mechanical design of the fermenter, the oxygen transfer characteristics of the vessel and its power requirements.
There are a number of components that contribute to the aeration and agitation system efficiency including the height/diameter ratio. These are:
i. the impeller system (marine, flat-blade turbine etc) ii. the baffles (can also provide additional cooling capability) iii. the air sparger (ring, cross orifice, porous, nozzle) iv. the drive seal (mechanical, magnetic)
Dear Sir I would to know what is the min. time required for carbon steel tube A214 @ zero C to 50 C
more about the carbon dioxide(co2) moulding process,for my seminar topic.
Cooling of storage tanks: A research involving using a bench top scale wind tunnel to investigate heat losses from storage tanks. A series of small scale model tanks have bee
SHELLS: In the topic (SHELLS) , we have seen the assumptions made in the analysis of thin shells. For a spherical shell, which is symmetrical in all of the directions, the ho
Point of inflexion: Define the term point of contraflexure or point of inflexion. Also define point of zero shear force? Sol.: The points (other than extreme ends of beam)
Describe the test specimens that were used in the testing program, and what one hopes to learn by testing them. Show the "test matrix" (i.e. a listing of what specimens made of wh
(a) Illustrate why a rich mixture is required for the following (i) idling (ii) sudden acceleration (iii) Maximum power (b) A simple jet carburetor is required to supply 5Kg
Three basic types for microbial systems: Porous, nozzle and orifice Porous sparger Laboratory operation, usually constructed from sintered glass or metal. Disadvantages a
To design a cantilevered truss to support the loads shown in the figures, two layouts are proposed as shown in Figs. A and B. All truss members are steel with allowable stress of 2
calculate the head required
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