En un evaporador de circulación natural se distribuyen una serie de tubos verticales de longitudes muy variables (calandria de tubos) dentro de una carcasa. Short-Tube or Calandria Evaporator This evaporator type consists of a vessel (or shell) which contains a bundle of short vertical tubes [Fig. l(b)[ through which. requerimientos de control: nivel en cada vaso evaporador, concentración de la meladura . calandria del evaporador y del condensado en la calandria.
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As a study object was defined both the cane juice and Roberts evaporator.
Concerning the position and distribution of the juice into the evaporator, the results indicated that the juice temperature is influenced by the juice distributor. Regarding the temperature profile, the fluid reaches the highest temperatures in the middle of the height of the calandria and pressure decreases uniformly from the bottom to the body of the evaporator.
The values of the temperature field both simulated computationally as those measured experimentally shown to be in good agreement, validating the computational model developed in this thesis. In the sugar industry, evaporators play an important role in the crystallization process of crystal sugar and heat economy.
Eccentric juice distributors to the central axis of the evaporator have the highest heat transfer coefficient. In this thesis two main objectives are intended to achieve it. Universidad Nacional de Trujillo Abundant juice recirculation occurs between the outlet pipe of juice evaporated and the down take of recirculation. ecaporador
The first objective was to determine the behavior of the field of velocities, temperatures and pressures of cane juice, of a two-phases system of a evaporator Roberts.
The first objective was to determine the behavior of the field of velocities, temperatures evapoorador pressures of cane The second objective was to determine the effect of inlet design on the juice to the evaporator heat transfer coefficient. Villarreal Albitres, William Fernando.
To determine the effect of the juice supply system on the heat transfer coefficient; three evaporators of m2, m2, and m2, respectively, were used. To validate the temperature field profile computationally simulated, boiling juice experimental data were measured by placing temperature sensors above and below the evaporator calandria.
Madariaga Aranibar, Steven Alonso Published: Computational results obtained from computer simulation of the velocity, temperature and pressure fields of calanddria juice of an evaporator Roberts showed that the juice velocity drops dramatically at the bottom of the calandria.