Topic
Vapours
About: Vapours is a research topic. Over the lifetime, 1153 publications have been published within this topic receiving 15022 citations.
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TL;DR: In this article , the authors investigated the mass transfer between absorption and evaporation in sessile droplets in contaminated atmospheres with Methanol and Butanol organic vapours and demonstrated that very small volumes of liquid droplets are shown to absorb many times their initial volume of vapour from the surrounding atmosphere.
01 Jan 1974-Zentralblatt für Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene. Zweite Naturwissenschaftliche Abteilung: Allgemeine, Landwirtschaftliche und Technische Mikrobiologie
TL;DR: In this paper, the fungicidal effect of AITC vapours was demonstrated in pure cultures of micromycetes and the length of the inhibition increases with the time of exposure.
Patent•
21 Oct 1987
TL;DR: In this article, a multi-stage mixed condensation of vapours, in particular vapours produced in regenerating spinning bath solutions, is described, where the overflow from each mixed condenser circuit is conveyed to the next cooler mixed-condenser and the working liquid is fed in countercurrent to the cooling solution in the mixed condensers in the interconnected recooler system.
Abstract: In a process for the multi-stage mixed condensation of vapours, in particular vapours produced in regenerating spinning bath solutions, the heat liberated in the mixed condensers [9, 10, 11] is utilised by means of surface condensers [15, 16, 17] to heat a working liquid. Every condensation stage has a separate mixed condenser with its own mixed condenser circuit [12, 13, 14] for the cooling solution used and also a recooler for heating the working liquid. The process is characterised in that the overflow [21, 22] from each mixed condenser circuit is conveyed to the next cooler mixed condenser and the working liquid is fed in countercurrent to the cooling solution in the mixed condensers in the interconnected recooler system.
Journal Article•
TL;DR: In this article, a thick film of composite was prepared by using PMMA and TiO 2 (PMTi), and the composite's gas sensing behavior for acetone vapour was tested by measuring the resistance change of the composite at room temperature.
Abstract: People may develop a headache, fatigue and even narcosis when the concentration of acetone in air is higher than 10,000 ppm. Hence, detecting and measuring acetone concentrations in the workplace or human body are necessary for our safety and health. Gas sensors play vital role in detecting, monitoring and controlling the presence of hazardous and poisonous gases in the atmosphere at very low concentrations. In the present work, a thick film of composite was prepared by using PMMA and TiO 2 (PMTi). Then, the composite’s gas sensing behaviour for acetone vapour was tested by measuring the resistance change of the composite at room temperature. An increase in resistance has been observed with a response time of about ten seconds. The PMMA/ TiO2 (PMTi) composites were characterized by using PXRD, FTIR and SEM. The results show that the thick film of PMTi composite can function as a very good gas sensor for acetone vapours.
TL;DR: In this article, a three-dimensional numerical heat transfer model has been developed for the fluorination reactor using a commercial software, Fluent 6·1, to identify the heat taken away by argon during the reac...
Abstract: The preparation of yttrium fluoride (YF3) by fluorination of yttria with ammonium bifluoride is an established process. During fluorination, large amounts of ammonium fluoride (NH4F) vapours are generated in the reaction zone. In order to prevent back reaction, the vapours must be suitably removed from the reaction zone. In usual practice, gas purging (argon or dry air), at fairly high flowrate, removes the vapours suitably. The high flowrates have a considerable effect on the temperature inside the reactor. The ammonium fluoride vapours, transported with the inert gas, condense on the cooler regions of the reactor. The condensed vapours being highly corrosive attack the reactor wall. The present study attempts to address the above issue. A three-dimensional numerical heat transfer model has been developed for the fluorination reactor using a commercial software – Fluent 6·1. The simulations were attempted with varying argon flow velocities, to identify the heat taken away by argon during the reac...