Analytical model for evaluating lateral capture efficiencies in surface treatment tanks.
A pilot scale installation 1.8 m long and 1.6 m wide was designed to simulate a surface treatment tank incorporating a lateral capture system and a distribution network that permits the surface emission of tracer (SF6). The capture efficiency, ET, was determined as a function of the specific capture flow qc, m3/sm2, for three tank lengths, L, (1.2, 1.53, and 1.8 m) and several temperatures, T, from ambient to 95 degrees C, keeping the surrounding air velocity low (v < or = 0.1 m/sec). The data showed a satisfactory fit to a model that related capture efficiency with two exponential functions: the first dependent on the ratio capture velocity/air velocity in the vicinity of the tank, and the second on the ratio capture velocity/velocity of rising drafts provoked by the temperature of the tank.
Marzal
F
F
Universidad Politécnica de Cartagena, Departamento de Ingeniería Térmica y de Fluidos, Paseo de Alfonso XIII, 48, 30203 Cartagena, Murcia, Spain. FJ.Marzal@upct.es
González
E
E
Miñana
A
A
Baeza
A
A
D000392:Air Movements; D000395:Air Pollutants, Occupational / Q000032:analysis; D015920:Gas Scavengers; D008962:Models, Theoretical; D014691:Ventilation / Q000295:instrumentation*
D000395:Air Pollutants, Occupational