Increase of the intensity of the electrostatic field may be carried out in different ways, for example by increasing the charge or changing the environment conductivity. Higher overall intensity does not necessarily lead to an increase of productivity of nanofibers, because it is influenced also by the distribution of the intensity of the electrostatic field. Optimization efforts for a productivity increase of currently designed lines producing inorganic nanofibers is a very complex problem that depends on the distance of electrodes, voltage value, characteristics and type of the polymer solution, humidity, ambient temperature and other parameters. These parameters affect the potential and electric field intensity. Electrostatic field distribution is influenced by the design of reservoir filled with polymer solution. Geometric design and used construction material obviously affect the final intensity. For the assessment of distribution of electrostatic field in the design of production lines FEM simulation models have been created. FEM simulations were done for various material relative permittivity and design of the reservoir. For the comparison of the simulations and the real behavior the functional model of the reservoir was constructed and tested in a production line working on the Nanospider principle. Increase of the intensity of electrostatic field can be achieved by utilization of the suitable material of the reservoir.
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