Artificial smoke is produced by heating a smoke fluid chemical above its boiling point within a heat exchanger. The fluid is then vaporised, and it is when the vapour exits the heat exchanger and mixes with the relatively colder atmosphere that rapid condensation of the vapour takes place, resulting in a visible smoke (or technically fog).
It is important that the vaporisation of the fluid within the heat exchanger is complete, otherwise the production of a 'wet' smoke, or a smoke with a very large particle size will result.
Conversely, it is important that the heat exchanger through which the smoke fluid is passed is not operating at too high a temperature, otherwise unpleasant and potentially hazardous pyrolysis products will be formed.
Depending on the type of smoke fluid being vaporised it may be necessary to use an inert propellant gas as a “carrier” for the fluid as it is heated within the heat exchanger.
Concept's machined range of heat exchangers produce a smoke or fog effect with a particle size an order of magnitude less than conventional smoke systems, giving significant benefits in terms of smoke concentrations required to achieve obscuration targets, health and safety, flammability and settling velocities of the resulting fog.
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> view allAfter using the Spirit 900 Smoke Generator and attending Concept's complimentary service and maintenance course:
"Concept offer a fantastic after sales service whether it be maintenance courses or queries - fully satisfied. With my experience of dealing with Concept I find it difficult to see where improvements can be made as I feel 100% satisfied with the product, information and answers to any queries.
I feel that it gives a more realistic setting for difficult exercises, which improves the experience and motivation of students / crews. The only other way would be to use obstruction masks that take the realism out of any training.
I would like to add, having worked with Concept over the last 18months I have found it educational and the staff are a credit to the company. I would like to thank all the staff for the patience they have shown with dealing with my queries."