Determine the required standoff distance

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Reference no: EM13946682

Electrical circuitry is written onto a photovoltaic panel by depositing a stream of small (D = 55 µ,m) droplets of electrically conducting ink from a thermal inkjet printer. The drops are at an initial temperature of Ti = 200°C, and it is desirable for them to strike the panel at a temperature of Tfinal = 50°C. The quiescent air and surroundings are at Too = Tsur = 25°C, and the drops are ejected from the print head at their terminal velocity. Determine the required standoff distance L between the printer and the photovoltaic panel. The properties of the electrically conducting ink drop are pd = 2400 kg/m3, cd = 800 J/kg · K, and kd = 5.0 W/m · K.

Reference no: EM13946682

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