Outlet quality

Vapor quality, a. for inlet quality, for outlet quality kg/s IVh... 

Another correladou for vapor-shear-coutrolled condensation is the Boyko-Kruzhiliu correlation [Jnt. J. Heat Ma.s.s Transfer, 10, 361 (1967)], which gives the mean condensing coefficient for a stream between inlet quality ac and outlet quality ay, hD,... 

Figure 13 Pressure drop versus outlet quality (i>h = 2 mm).

Garimella and Bandhauer [32] conducted heat transfer experiments using the same test sections that were used for the pressure drop experiments of Garimella et al. [24, 25, 27, 28] described above. The high heat transfer coefficients and low mass flow rates in microchannels necessitate modifications to the test facility and test procedures described above. For the small zlx required in the test section, the heat duties at the mass fluxes of interest are relatively small. Calculating this heat duty from the test section inlet and outlet quality measurements would result in considerable... 

The term is the effective mean heat-transfer coefficient for condensing a stream from an inlet quality (mass fraction vapor) X to an outlet quality x . For the usual case of totally condensing a satnrated vapor stream (x, = 1 x = 0), the bracketed term in Equation (6.86a) becomes... 

Effect of Tube Length. The critical heat flux decreases with tube length as shown in Fig. 15.117. The total power input increases with length (also shown in Fig. 15.117). Some data show an asymptotic value of power input over a wide range of tube length, corresponding to a constant outlet quality for the critical condition. 

Vapor quality, Xj for inlet quality, x for outlet quality kg/s ib/h... 

With the phase condition of the fluid known at both the inlet and the outlet of the test section, the phase condition between the two points could be estimated. The device was useful during the cool-down period. The fluid flow rate was restricted by the use of the throttling valve until the test section outlet quality meter indicated a steady single-phase flow condition had been obtained. 

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