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A real-scale pilot installation simulating an open surface treatment tank with a push-pull ventilation system has been designed. From experiments carried out, typical representations of the total and transversal linear efficiencies show that when total efficiency is related to push flow rate, taking as a parameter the pull flow rate, a parabolic profile is(More)
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,(More)
Methodologies are proposed for determining capture efficiencies in the ventilation systems of surface treatment tanks, using test-scale equipment. The equipment, which incorporates a lateral and push-pull ventilation system, can measure and control the variables of interest because it incorporates a tracer gas generator (sulfur hexafluoride, the(More)
A full-scale installation which simulates a surface treatment tank provided with a push-pull ventilation system has been designed. This study examines the influence of the geometry of the push element on the capture efficiency of the system. It is observed that: (i) capture efficiency increases with the number of holes because of the continuous curtain(More)
A pilot installation was designed that simulates a surface treatment tank fitted with a push-pull ventilation system. The installation contained elements for measuring and controlling the operational variables (flow rate and tank temperature) and smoke generating equipment for injecting smoke through the holes of the push unit and from the tank surface.(More)
In this paper, the influence of sample pressure on benzene measurements obtained with two automated in situ gas chromatographs is studied. The analysers were calibrated using a non-linear regression at 293 ± 1 K and 101.3 ± 0.2 kPa. A gas mixture of benzene in air (5 μg/m3) was produced and measured at calibration conditions. Subsequently, the sample(More)
Automatic palaeographic transcription of medieval manuscripts is a challenging task. Transcribing and deciphering these manuscripts is considered complicated and problematic, especially due to particular characteristics of medieval handwriting and the composition and conservation of these documents. In this paper, a new problem in handwriting recognition is(More)
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