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Field Applications
Published in Ahmad Shahid Khan, Saurabh Kumar Mukerji, Electromagnetic Fields, 2020
Ahmad Shahid Khan, Saurabh Kumar Mukerji
The use of electrostatic forces in industry is quite common. These are involved in (i) the operation of miniature electrostatic motors used in sensors and control devices; (ii) electrostatic generators used for high voltage low current applications such as electron microscope, ion implantation, etc. (iii) electrostatic precipitators employed for separating suspended particles from a gas; (iv) electrostatic coating with paint or other materials; (v) electrostatic imaging in the photostat process; (vi) X–Y recorder for holding paper; (vii) highly sensitive charge-coupled device (CCD) cameras; (viii) non-impact printing (e.g., in inkjet printers); and (ix) electrophoresis (separation of charged colloidal particles by electric field) used in biology, etc. Some of the above referenced applications are described in the following subsections.
Performance investigation of nanostructured composite surfaces for use in adsorption cooling systems with a mass recovery cycle
Published in Science and Technology for the Built Environment, 2018
L.Q. Zhu, C.Y. Tso, K.C. Chan, C.L. Wu, J. Chen, W. He, S.W. Luo, Christopher Y.H. Chao
After fabricating the nanostructured superhydrophobic surface or nanostructured superhydrophilic surface, a zeolite 13X adsorbent membrane is coated onto the nanostructured surface with an electrostatic coating method. Electrostatic coating is a coating method using a high-voltage electrostatic electric field to force the particles charged negatively to move in the opposite direction of the electric field and coat the particles onto the surface. The preparation of the adsorbent membrane is as follows:Dry the zeolite 13X adsorbent at a the temperature of 150°C for 24 h, powder it, and then put the powder into the canister of an electrostatic sprayer, which is shown in Figure 1a. Spread the binder on the area of the plate surface, which is designed for the adsorbent membrane, while the other part of the surface is covered by acrylic plates.The powder in the canister is sprayed through the spray gun due to the pressure difference created by the pressure pump. The distance between the spray gun and substrate is 20 cm and the spray direction is 90° with the substrate.Remove the acrylic plates and clean the composite surface with compressed air.