Download Boiling heat transfer and two-phase flow by L S Tong PDF

By L S Tong

This can be a first-class publication to have for an engineer who take care of two-phase flows and warmth move, if you layout and function nuclear reactors, thermal strength crops and different thermal administration platforms. It presents a origin, with an intensive number of empirical formulae that can be valuable if effectively utilized. What feels lacking during this ebook, - and is normal function of BOOKS on two-phase flows and boiling - is the heavy empiricism, the inability of a systematic thought, the absence of strong theoretical therapy that one may still own after studying this kind of complete compilation. that's to assert, it really is solid for a few one that understands the subject/field, now not for educating anyone approximately boiling warmth move and two-phase flows.

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Extra resources for Boiling heat transfer and two-phase flow

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Assuming the perfect gas law, (2- 1 8) where n� is the number of moles of inert gas in the cavity, T� is the absolute temper­ ature of the cavity environment, and V' is the volume of the cavity at maximum penetration conditions, Eq. (2- 1 7) can be written as (Dwyer, 1 976) , PL where _ , PG _ f T� _ 2 a' ' (r )3 - r' (2- 1 9) POOL BOILING 19 f = 3n�R(tan �/2 ) 1T[COS( �/2 + a)p The value of f depends on the characteristics of the particular surface liquid sys­ tem , the amount of inert gas trapped in the cavity, and the maximum penetration conditions.

01 7-in. 0 1 7 in. 085 in. 0 mm). Although all the above experimental results were obtained with cylindrical cavities, conical cavities would probably give the same results, as long as \fI/2 < ::; 90° (Dwyer, 1 976). Considerable attention has been given to the effect of preboiling conditions on the incipient boiling wall superheat of liquid metals. As indicated before, an active cavity is one that is either partially or wholly filled with vapor or a mixture of vapor and inert gas. Liquid metals, particularly the alkali metals, tend to fill or quench the larger cavities in a heating surface because of their strong wetting char­ acteristics, thus liquid metals penetrate the cavities under subcooled conditions prior to the heating/boiling process.

PL + YG r (2-1 6) Under the conditions for deepest liquid penetration, Eq. g. = r , (2- 1 7) where the primes represent the conditions of maximum boiling suppression. Dwyer ( 1 969) extended Holtz 's concept and not only related r at incipient boiling to r ' at maximum boiling suppression but also related Pi . g. to P ; g . As a result, he was able to achieve simultaneous solutions of Eqs. (2-3) and (2- 1 7) on a more realistic basis. Assuming the perfect gas law, (2- 1 8) where n� is the number of moles of inert gas in the cavity, T� is the absolute temper­ ature of the cavity environment, and V' is the volume of the cavity at maximum penetration conditions, Eq.

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