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Further design considerations

The primary function of a fermenter is to provide conditions which are conducive to microbial growth. Assuming that the fermenter contains the appropriate nutrients, [Pg.402]

Fermenters with a capacity of over about 10 litres are too heavy to sterilise in autoclaves. Whilst they may still be laboratory-sized, they have to be constructed so that they may be sterilised in situ. They become, as a consequence, pressure vessels and the extensive use of glass becomes impractical and the preferred material of construction is a stainless steel. Seals are typically of silicone or other synthetic rubber or fluorinated plastics, with borosilicate glass being retained for sighting windows. This format is retained for vessels which are far larger than the laboratory scale, and Fig. 5.80 outlines the construction of a typical industrial deep tank fermenter. [Pg.404]


A further design consideration is the resistance of each polymer to different environments. For example poly(methyl methacrylate) is highly resistant to the action of sunlight, while polystyrene has low resistance. Conversely, polystyrene has excellent resistance to water where poly(methyl methacrylate) is only fair. (From Ref. l)... [Pg.1446]

Additional correlations for w p, v, and for different extractor designs are found in special design literature of manufacturers and [6.18, 6.19]. Further design considerations are found in Chapter 6.2.4. [Pg.421]

This door shall be designed to withstand the stresses produced by the credible tornado-borne missiles listed in the General Criteria for Design of Civil Structures, N14-50-D702. For further design considerations by others see Shield Door at Equipment Access Hatch Criteria, N4-MAD740C. [Pg.350]

Advantages to plastic cell cases are cost and electrical isolation in the 320 V and higher battery packs common to today s electric vehicles, where even high resistance leakage currents to other vehicle components must be considered. Further design considerations for plastic cell cases include development costs for permanent molds, gas permeation, thermal conductivity, and sufficient plastic thickness for gas pressure containment without can wall bulging. NiMH battery modules using plastic cell cases are shown in Fig. 30.3. [Pg.879]

These first-created enantiophores are rudimentary, but may serve as useful guidelines for a further design of more sophisticated and efficient search queries in consideration of possible alternative modes of binding and conformational changes in the CSP receptor structure. Undoubtedly, this query optimization will soon take advantage of the backgrounds of our new 3D-database project called CHIR-SOURCE. [Pg.111]

Microhotplates, however, are not only used for metal-oxide-based gas sensor applications. In all cases, in which elevated temperatures are required, or thermal decoupling from the bulk substrate is necessary, microhotplate-like structures can be used with various materials and detector configurations [25]. Examples include polymer-based capacitive sensors [26], pellistors [27-29], GasFETs [30,31], sensors based on changes in thermal conductivity [32], or devices that rely on metal films [33,34]. Only microhotplates for chemoresistive metal-oxide materials will be further detailed here. The relevant design considerations will be addressed. [Pg.6]

The reduction in overall efficiency on scale-up deserves further design and performance consideration. The net power output was lower than expected from the summed performance of the individual units and the optical, solid state or electrochemical factors which contribute to this reduction in performance need to be classified. [Pg.248]

The significance of this history is that over a span of many centuries engineers had only about nine basic materials with which to work. Further, they were limited in their design considerations by the properties of these few materials. So, within just the past 60 years we have seen the advent of these fifty or so separate families of plastics and literarily hundreds of modifications of these materials. [Pg.10]

This rearrangement involves considerable molecular flexibility (motions) and thus it is expected that the rate would depend upon the physical properties of the medium, such as the solvent viscosity and solvent interaction. In solid state and at 77 K such a rearrangement would not have been significant. Further design experiments using specific derivatives of GAV as the reactant given in a later section unequivocally confirm this rather unusual radical rearrangement. [Pg.108]

Industrial reactors generally operate adiabatically. Cholette and Blanchet [8] compared adiabatic plug flow reactor to the CSTRmm. For exothermic reactions, they inferred that the performance of a CSTRmm is better than that of a plug flow reactor at low values of conversion, and vice-versa at high values of conversion. They further showed that the design considerations for endothermic reactions are similar to those for isothermal reactions. [Pg.776]

A further design uses triple headed pumps, where the pistons are effectively working 120° out of phase, with two heads in different stages of filling as the third is pumping, thus smoothing the flow considerably. [Pg.279]


See other pages where Further design considerations is mentioned: [Pg.102]    [Pg.256]    [Pg.402]    [Pg.619]    [Pg.332]    [Pg.102]    [Pg.256]    [Pg.402]    [Pg.619]    [Pg.332]    [Pg.348]    [Pg.2257]    [Pg.436]    [Pg.439]    [Pg.478]    [Pg.40]    [Pg.587]    [Pg.178]    [Pg.28]    [Pg.240]    [Pg.1025]    [Pg.306]    [Pg.112]    [Pg.259]    [Pg.757]    [Pg.41]    [Pg.245]    [Pg.160]    [Pg.160]    [Pg.24]    [Pg.2013]    [Pg.332]    [Pg.174]    [Pg.961]    [Pg.117]    [Pg.517]    [Pg.745]    [Pg.459]    [Pg.1339]    [Pg.2261]    [Pg.150]    [Pg.363]    [Pg.254]   


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Design considerations

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