Schematic diagram of the nichrome (NiCr) wire aerosol generator. All

Download scientific diagram | ​ Schematic diagram of the nichrome (NiCr) wire aerosol generator. All nichrome–nichrome joints were spot welded. The four long coils of small diameter nichrome wire were each made from a single piece of 29 gauge nichrome wire (0.287 mm dia X 2000 mm L) (60% Ni, 20% Cr, 20% Fe). Using a lathe running at a low speed, each piece was wound (under about 20 pounds of tension) onto a 6 mm diameter mandrel so as to form a uniform coil. To ensure that all four coils conducted the same electric current, all four of the original straight pieces of nichrome wire were within a few millimeters of the same length. Effectively all the Joule heating occurred in these coils. Two electric heating elements (designed for a residential electric heating furnace and purchased from the local hardware store) were disassembled and some of their parts used for the present generator. These two heating elements provided twelve ceramic discs that served as spacers for the four nichrome coils, keeping them in place even when they were heated to a dull red during the generating session (the same role they played in the heating element for the residential furnace). The ceramic discs   from publication: Size distribution and critical supersaturation spectrum of the aerosol from an electrically heated nichrome wire | An aerosol generator was constructed that produces particles from the Joule heating of a nichrome wire. This novel generator produced a stable output (+/-20%) over a 7 hour period. The approximate mean diameter was 24 nm. The critical supersaturation spectrum was measured and | Spectrum, Wire and Heat | ResearchGate, the professional network for scientists.

Schematic diagram of aerosol generator.

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PDF) Size distribution and critical supersaturation spectrum of the aerosol from an electrically heated nichrome wire

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