DEVICE FOR EXPRESS CONTROL QUALITY ENERGY SAVING OF DOUBLE-GLAZED WINDOWS
Authors:   Chernihiv National University of Technology, Naumchyk Pavlo , Novik Ekaterina ,   Chernihiv National University of Technology
Published: January 2021

Urgency of the research. It is known that to reduce the thermal conductivity fill with argon, which has low thermal conductivity, under atmospheric pressure inside a double-glazed window, and according to State standard of Ukraine [1] the air content in a double-glazed window should not exceed 15%. Since over time, part of the molecules of argon is replaced by molecules of air, thus deterioration of the thermal insulation properties, which leads to energy and financial losses. Therefore, there is a need to check the concentration of argon in the glass units. Target setting. An important task is to produce available devices for express control quality of energy saving doubleglazed windows. The principle of operation of the device is based on the fact that the electrical strength of air in conditions close to normal is approximately 1.6 times greater than that of argon. Replacing part of the molecules of argon with air molecules leads to an increase in the breakdown potentials difference. Actual scientific researches and issues analysis. In recent studies of methods for checking the concentration of argon in a double-glazed, it is proposed to use methods of spectral analysis, as well as physical methods of analysis, which include electrochemical processes. Among them, the GASGLASS V2 device, which can check the composition of the gas contained in the double-glazed unit, but the indicated device has a high cost (7900 €) and is difficult to use. In addition, the quality of double-glazed windows is estimated according to the method described in in State standard of Ukraine. Uninvestigated parts of general matters defining. Thus, for the use of the device proposed by us, it is necessary to know the dependence of the electrical strength of the mixture of argon and air on the concentration of air. The formulation of the problem. Conduct research on the dependence of the electrical strength mixture of the argon and air to the concentration of air, and offer a model of a simple and affordable device for concentration of argon in the double-glazed unit. The statement of basic materials. To carry out an experimental study, we assembled an installation that includes a vacuum plate, a vacuum pump, an electroforming machine, an arrester, a voltmeter, and a balloon filled with argon. During the experiment, with the help of a caliper, it was established at which the smallest distance was the spark electrical discharge between the discharge bullets of the electroforming machine and measured the discharge voltage. It should be noted that the spark discharge between the balls of the electroforming machine occurred at a much lesser distance, than between the bullets of the arrester, which placed under the lid of the vacuum plate with argon. In total, 6 series of experiments were conducted for different concentrations. According to the data, a graph of the dependence of electrical strength on the concentration of air in argon, which can be used to calibrate the unit for assessing the quality of the double-glazed windows, was constructed. The structure and principle of the device for controlling the concentration of argon have been analyzed. It was determined that the device should contain the following parts: contact electrodes, indicator of current, a button for launching a high-voltage generator, electric discharger and the stabilizer AMS1117-3.3. Conclusions. During the experiment, the dependence of electrical strength in real-time was established with the help of theoretical and experimental research on the developed methodology, using the installation for the experiment. Also, the dependence of the spark discharge on the concentration of argon on the graph was plotted.