Specific Electrical Energy Research Articles

Analytical investigation of the dew point water recovery system with potential application for drinking water production

The article presents the analytical investigation of the Dew Point Water Recovery (DPWR) system with potential application for drinking water production. Four different configurations of the DPWR system were proposed, differing in the number and type of dew point cooling exchangers used, and their operation was described using a validated convective heat transfer coefficient mathematical model. It was found that the three stage configuration of the DPWR system with a regenerative exchanger has the best water recovery performance, while the three stage configuration with a counter-flow exchanger has the best ratio of energy supplied to the system in relation to the amount of water produced. It was also found that the DPWR system can operate in a wide range of operating conditions with a specific electric energy consumption reaching below 0.9 kWh/m3 and GOR in the range of 0.36–2.16. What distinguishes the DPWR system from other methods of drinking water production is the ability to work without an additional source of thermal energy apart from the energy of the air supplied to the system. Thanks to this property, the system has the potential to fill the technological gap of a low-energy and easily accessible method of drinking water production.

Shape-controlled synthesis of lead dioxide nanoparticles for enhanced electrocatalysis of electrochemical ozone production

Shape-controlled nanomaterials of PbO2 have attracted considerable attention in designing highly efficient electrocatalyst, since the physicochemical properties of PbO2 vary from their structure and morphology. PbO2 materials demonstrating promising ability in electrochemical ozone production (EOP) have attracted the focus of research recently, and therefore boost the strategical improvement in their key performance, such as electroactivity, current efficiency and space-time yield. In this work, the PbO2 crystals with controllable structures of rod-like, sphere-like as well as star-like PbO2 were acquired to explore their physicochemical properties and EOP performance systemically. Among the samples, PbO2 nanorods, benefitting from their abundant active surface chemisorbed oxygen, exhibit relatively high electrocatalytic activity towards EOP. Such structural feature is beneficial for triggering the generation of a rapid charge, improving mass transfer, and subsequently enhancing the corresponding electrocatalytic reactions. A maximum EOP current efficiency of 14% was achieved by the PbO2 nanorod electrode at a cell potential of 4.0 V corresponding to a specific electric energy consumption of 101.53 kWh·(kg·O3)−1. Overall, an in-depth understanding of the nanostructure–performance relationship of PbO2 and EOP performance is demonstrated in this work, which can provide an insight into the rational design of PbO2 for the EOP.

Influence of Factors Determining Weeds’ Plant Tissue Reaction to the Electric Pulse Damage Impact

Due to the emerging danger to the life of animals and people, today there is a turn to safe technologies for controlling weeds by physical methods, both from the point of view of ecology and food safety, which include the destruction of plants using an electric current, in particular, high-voltage electrical pulses. The purpose of the study presented in the article is to identify and evaluate the effect of high-voltage electrical pulses on the irreversible damage to the intracellular structures of the plant tissue of weeds and unwanted grasses during their electric weed control, characterizing and evaluating the parameters and modes associated with such processing. Experimental studies were carried out using a laboratory experimental setup that consists of a pulse voltage generator, a control circuit for a spherical forming spark gap, and schemes for measuring the electrical resistance of the plant tissue of the weed sample. The lesion level made it possible to control the depth of irreversible damage to the internal structure of the plant tissue of weeds by measuring its tolerance (the conductivity of the tissue increased with increasing damage to the cellular components of the tissue).The irreversible damage to the plant tissues of weeds for weeds of various biological groups, which is characterized by reaching the value of at least 4.0–7.5 degrees of damage to their tissues, can be acted on them with high-voltage electrical pulses in the treated tissue of an electric field intensity of at least 3.74 kV/cm, while ensuring specific processing electric energy for the reliable processing of weeds: for Euphórbia virgáta, thise quals 5.2…17.5 J/cm3; for Amaránthus retrofléxus, it is 3.5…7.7 J/cm3; for Cirsium arvense, it is 2.7…10.9 J/cm3;for Sónchus arvénsis, it is 3.7…15.8 J/cm3; and for Lactúca tatárica, it is 3.3…8.1 J/cm3.

Analysis of the Specific Energy Consumption of Battery-Driven Electrical Buses for Heating and Cooling in Dependence on the Technical Equipment and Operating Conditions

This paper analyzes methods of heating battery-driven electrical buses. The examined buses were two identical airport transport buses and two buses used in local transportation. To heat the first buses, an electrical water heater with a heating capacity of 20 kW, and for air conditioning, a rooftop air conditioner with a cooling capacity of 20.6 kW was installed. Climate control in the city buses was achieved using an R744 heat pump with a cooling capacity of 25 kW and a heating capacity between 14 and 21 kW, along with an electrical water heater with a capacity of 32 kW. During the project, the measurement data of the buses described above were taken for a full year and evaluated. The analysis of the measurement data brought insights into the specific electrical energy consumption of climate control in the buses in real operating conditions at outdoor temperatures between 2 °C and 36 °C. The results of this project additionally provide information on the optimization potential for the climate control of buses.

CO2-Minimized Ferrochrome Production Utilizing Silicon Wafer Cutting Slurry as an Alternative Reductant

Direct emissions due to the use of carbon-based fossil-reducing agents contribute to the overall CO2 emissions of pyrometallurgical production processes. This study investigated the replacement of fossil coke by silicon-rich cutting waste from the solar wafer cutting process to produce ferrochrome in an electric arc furnace. Laboratory test work and thermochemical simulation were carried out to examine the product quality at various additions of cutting waste and lime. The experimental trials resulted in products in accord with international standards, however, adjusting the slag composition by the addition of lime was necessary, otherwise high silicon contents in the alloys were obtained. Due to the highly exothermic reaction of silicon with iron- and chromium oxides, the silicothermic reduction results in a decreased specific electric energy consumption compared to the carbothermic reduction according to the thermochemical simulation. Low phosphorus and sulfur contents in the alloy might result in premium prices, aiding the economic viability of the process.Graphical

Modeling and Validation of a LiOH Production Process by Bipolar Membrane Electrodialysis from Concentrated LiCl.

Electromembrane processes for LiOH production from lithium brines obtained from solar evaporation ponds in production processes of the Salar de Atacama are considered. In order to analyze high concentrations' effect on ion exchange membranes, the use of concentrated LiCl aqueous solutions in a bipolar membrane electrodialysis process to produce LiOH solutions higher than 3.0% by mass is initially investigated. For this purpose, a mathematical model based on the Nernst-Planck equation is developed and validated, and a parametric study is simulated considering as input variables electrolyte concentrations, applied current density, stack design, process design and membrane characteristics. As a novelty, this mathematical model allows estimating LiOH production in a wide concentration range of LiCl, HCl and LiOH solutions and its effect on the process, providing data on final LiOH solution purity, current efficiency, specific electricity consumption and membrane performance. Among the main results, a concentration of 4.0% to 4.5% by LiOH mass is achieved, with a solution purity higher than 95% by mass and specific electrical energy consumption close to 4.0 kWh/kg. The work performed provides key information on process sensitivity to operating conditions and process design characteristics. These results serve as a guide in the application of this technology to lithium hydroxide production.

Investigation into Solar Drying of Moroccan Strawberry Tree (Arbutus unedo L.) Fruit: Effects on Drying Kinetics and Phenolic Composition

Solar drying is affordable, requiring low energy and an eco-friendly method. Thus, the present paper studies the efficiency and characteristics of the indirect solar convective drying in the fruits of Arbutus unedo L. as well as its effects on the fruit phenolic compounds. The fruit samples were dried at 60 °C, 70 °C, and 80 °C. Phenolic compounds were investigated using a Liquid Chromatography platform. Experimental results revealed that the effective moisture diffusivity determined by Fick’s second law varied from 1.51 × 10−9 to 4.68 × 10−9 m2/s, and the activation energy recorded was 2203.62 kJ/kg. Both the total energy consumption and the specific electrical energy of the dried fruits decreased as temperature increased. The Midilli–Kucuk model was selected as the best-fitted model for drying Arbutus unedo L. Significant effect of temperature on phenolics was observed. The concentration of the phenolic compounds decreased by 15.54, 39, and 40.63% at 60, 70, and 80 °C, respectively.

NaClO-ს მიღება NaCl-ის დაბალი კონცენტრაციის წყალხსნარების ელექტროლიზით

The work aims to develop a method for producing NaClO by electrolysis of 20–25 g/L NaCl aqueous solution under conditions other than optimal, ensuring the maintenance of competitive technical and economic indicators of this product, primarily in terms of specific electric energy consumption. NaClO produced by electrolysis of a low concentration NaCl aqueous solution is used in the process of modifying zeolite with MnO2 by indirect electrochemical oxidation, where the mediator is the redox system NaCl – NaClO. Optimal conditions for producing NaClO by electrolysis of aqueous solution of 20–25 g/L NaCl are determined: concentration of available chlorine in the solution produced by electrolysis – 2.0–2.3 g/L; Anodic current density – 200–300 A/m2 ; Electrolyte temperature – 20–250C. Under these conditions, the available chlorine yield is 74.8–82.5%, and the specific electric energy consumption is 5.12–7.61 kWh/kg, which is equal to the value of a similar characteristic obtained under optimal industrial conditions.

Lactose Mother Liquor Stream Valorisation Using an Effective Electrodialytic Process.

The integrated electrodialysis (ED) process supports valorisation of a lactose-rich side stream from the dairy industry, creating an important source of milk sugar used in various branches of the industry. This work focuses on the optimization of the downstream processes before the crystallization of lactose. The process line includes a pre-treatment and desalination by ED of the industrial waste solution of the lactose mother liquor (LML). The LML was diluted to 25% total solids to overcome hydraulic issues with the ED desalination process. Two different levels of electrical conductivity reduction (70% and 90%) of the LML solutions were applied to decrease the mineral components and organic acids of the LML samples. The ED performance parameters such as ash transfer rate (J), the specific capacity (CF) of the ED and specific electric energy consumption (E) were determined and the influence of the LML solution on the monopolar ion-exchange membranes has been investigated. A higher degree of desalination is associated with higher electric energy consumption (by 50%) and lower specific capacity (by 40%). A noticeable decrease (by 12.8%) in the resistance of the anion exchange membranes was measured after the trials whereas the resistance of the cation exchange membranes remained practically unchanged. Any deposition of the alkaline earth metals on the membrane surface was not observed.

Optimal electrocoagulation as a post-treatment to photochemical oxidation: Minimal electrical energy consumption and lower acute toxicity of dairy wastewater

This work presents the enhancement of the electrocoagulation (EC) as a post-treatment to photochemical oxidation (UV/Fe2+/H2O2) by selecting of the current density (j; A m-2) and electrolysis time (t; min) for minimal specific electrical energy consumption (SEC; kWh per kg COD removed) and lower average lethal concentration (LC50; %) of dairy wastewater. According to Harrington desirability function and based on experimental data, some scenarios were systematically evaluated to determine the EC conditions that could result in the most desirable overall profile to improve EC effectiveness. The performance was evaluated by the removal of the COD, TOC and Fe2+ remaining of the UV/Fe2+/H2O2. The EC effectiveness was characterized by the ideal current efficiency (ϕ; 1.15 ± 0.05), and the electrode mass consumed (g Al; 0.674 ± 0.030), by considering the minimal SEC (19.20 kWh per kg COD removed) and lowest operating cost (US $ 8.89 per kg COD removed), as well. This occurred in 85.71 A m-2, 35 min and initial pH 2.95, that ensured the degradation/mineralization of the organic matter (≈ 90 % of removal) and the required circumneutral final pH (6.85 ± 0.06) for safely directable final disposal. Besides, COD/TOC ratio went from 3.47 to 2.69, suggesting an increasing biodegradability of this wastewater, and a reducing of the toxicity that was verified by the lower acute toxicity (LC50 ≈ 88 %).

Hybrid multi-stage flash (MSF) and membrane distillation (MD) desalination system for energy saving and brine minimization

A hybrid multi-stage flash and multi-stage membrane distillation system for freshwater recovery from the rejected MSF brine is studied. The proposed system reduces environmental impact through reducing the rate of rejected brine, desalination energy and product cost. This is achieved by utilizing the energy rejected from the brine heater to heat a portion of MSF reject that is fed into the MD system since MD systems operate at relatively low temperature and are tolerant to high salinity input. The system includes a multi-stage MD system with a capacity ranging from 75 to 200 m3/day that help in reducing brine volume as model novelty. MD energy is supplied from the condensate leaving MSF brine heater. The effect of MD feed inlet temperature on the performance of stand-alone MD and hybrid MSF-MD systems is investigated for various layouts of the integrated system. Performance of the proposed system is quantified in terms of productivity, MD gained output ratio (GOR), specific electric energy consumption (SEEC), freshwater recovery rate (RR) and water cost. The hybrid MSF-MD system can be used for rejected brine reduction. Parallel feed – parallel coolant integrated arrangement provides the best performance among other configurations, with a productivity, RR, GOR, and SEEC of 218.3 m3/day, 3.544 %, 0.921 and 1.107 kWh/m3, respectively for the MD system. Additionally, the hybrid MSF-MD system yielded about 30,098m3/day, 57.544 %, and 8.583 in productivity, RR and GOR, respectively. MD freshwater cost is reduced by 70 % - 90 % compared to the conventional MD system with an independent energy supply.

Material and energy flow analysis of craft brewing: A case study at a California microbrewery

Small breweries have been growing in number and volume share in the US marketplace. Brewing is water- and energy-intensive, especially for small brewers who do not benefit from the same economies of scale as large brewers. A systematic approach to characterizing the water and energy flows in small breweries will help researchers and process owners identify opportunities for efficiency improvement by reducing waste. The information from such analysis yields granular information about where water and energy (electrical and thermal) are embedded into beer. It also contextualizes a small brewery's specific water and energy consumption relative to peer breweries, providing a quantitative basis for decision-making that ultimately impacts economic competitiveness. In the present work, a case study is performed on a microbrewery in northern California. Visualization tools are provided that delineate how water and energy flow through the brewery. Specific electrical energy consumption was 183.7 MJ per US beer barrel (bbl) (1.6 MJ/L) packaged in the first half of 2018, thermal energy 489.4 MJ/bbl (4.2 MJ/L), water 12.8 bbl consumed/bbl (12.8 L/L), and wastewater 10.8 bbl discharged/bbl (10.8 L/L). These specific resource consumptions are placed into context relative to other small breweries. The metrics are high due to general inefficiency relative to peer facilities, reverse economies of scale in small breweries, and associated utility costs impacted by geographic location. Overall utility costs were $26.95 per bbl packaged vs. $16.01 for similar-sized breweries. This analysis sheds light on the virtuous cycle of how reducing one input in the beer-water-energy nexus will often lead to other resources being conserved as well, due to the overlapping nature of their embedment in the final product.

Multi-objective analysis of evacuated tube solar-electric hybrid drying setup for drying lotus bee pollen

This work aims to develop an evacuated tube solar-electric hybrid drying setup and enhance its performance using evacuated collector and photovoltaic systems. The setup performance was evaluated by dehydration of lotus bee pollen using two different strategies inducing solar heating drying and mixed heating drying at three different temperatures (40, 50, and 60 °C). The system was also compared with open sun drying. Compared with open sun drying, about 45%, 23%, 30%, and 41% reduction in the process time was induced by solar heating drying and mixed heating drying (40, 50, and 60 °C), respectively. For both solar heating and mixed heating drying, the mechanical energy, thermal energy generated by electric heating tubes, and radiation thermal energy accounted for were in the range of 12.2–38.5%, 0.0–15.3%, and 60.5–87.8%, respectively. From the perspective of drying efficiency and energy consumption, the developed evacuated tube solar-electric hybrid drying setup was more beneficial under mixed heating drying at 40 and 50 °C. The dryer efficiencies under the cases of mixed heating drying at 40, 50 °C were 48% and 34% higher than that of solar heating drying, while mixed heating drying had lower total energy consumption, specific energy consumption and specific electric energy consumption. The developed equipment can effectively reduce greenhouse gas emissions and has a short payback period of 1.24 years. Based on the findings of this research, it could be concluded that, resulting in decreased drying time, GHG emissions and enhanced energy efficiency, the developed equipment is a promising drying technology.

Batch reverse osmosis (BRO)-adsorption desalination (AD) hybrid system for multipurpose desalination and minimal liquid discharge

Brine disposal and energy consumption are the two most important challenges for desalination. In this study, a new hybrid desalination process integrating batch reverse osmosis (BRO) and adsorption desalination (AD) is proposed for high recovery and energy efficiency. Hybrid BRO-AD produces distilled water and drinking water simultaneously. It also provides cooling. Simulation results reveal high recovery of 96.0 % and 64.8 %, low specific electrical energy consumption of 0.536 and 2.089 kWh/m3, specific thermal energy consumption of 182.3 and 312.2 kWh/m3, with cooling power generation of 302.5 and 139.5 kW achieved in brackish water and seawater desalination, respectively. The thermal energy consumption can be supplied by low-grade waste heat. The effects of feed concentrations in the ranges of 1–8 g/L (for brackish water) and 30–44 g/L (for seawater) and feed temperature of 25–35 °C are also investigated. The performance of the BRO-AD is compared against non-hybrid BRO and AD systems. The study shows that the BRO-AD hybrid achieves higher recovery than BRO, while reducing the large amounts of adsorbent material needed by AD. With its versatile characteristics, the BRO-AD hybrid system can be considered a breakthrough step in minimal/zero liquid discharge.

Evaluation of drying characteristics, energy consumption and quality of parboiled paddy: Two stage drying

This study aims to investigate the drying kinetics, energy analysis and milling performance of two common rice varieties namely BRRI-28 and BR-16 by two stage drying. Parboiled paddy samples were dried employing two schemes of two stage drying. First scheme is first stage by fluidized bed drying at temperature profile of (150–170 °C) with fixed bed thickness of 10 cm, tempering (30 min) and followed by fluidized bed drying again using lower temperature 80±2 °C and second scheme is first stage fluidized bed drying (150–170 °C) and tempering and followed by sun drying method. In addition, sun drying method as complete single stage drying was considered as control drying. Drying results indicated that total drying time required in first scheme, second scheme and control drying are 1.4, 4.75 and 11–12 h, respectively. Energy analysis showed that for both paddy varieties, first scheme yielded the highest specific electrical (12.6 MJ/kg H 2 O evaporated) and thermal energy consumption (10.5–11.6 MJ/kg H 2 O evaporated) compare to second scheme (0.58–1.6 MJ/kg H 2 O evaporated) of drying. Milling quality as head rice yield (HRY) was significantly varied among the drying schemes. For BR-16 variety, first scheme yielded the highest HRY (66 ± 0.706%) compare to BRRI-28 variety that yielded the lowest HRY (43.9 ± 0.571%). Better milling recovery (75 ± 0.64%) was obtained in first scheme compare with control dried sample (71 ± 0.56%). Therefore, parboiled paddy is suggested to be dried by any scheme of two stage drying for achieving quality dried grain with minimum energy consumption. • Two schemes of two stage drying was investigated for parboiled paddy. • Energy consumption for drying of parboiled paddy was evaluated. • Total energy consumption varied from 2.06 to 24.6 MJ/kg moisture evaporation. • Head rice yield for two stage dried parboiled paddy varied from 37.5 to 75.66%.

Modeling the drying kinetics of microwave vacuum drying of concentrated skim milk: correlation of dielectric properties, drying stages, and specific energy demand at pilot scale

This study establishes a correlation between dielectric properties, drying parameters, drying rate and energy demand for microwave vacuum drying (MVD) of concentrated skim milk (CSM). MVD was conducted using a EnWave nutraReV™ unit, at various specific power inputs (0.86, 1.29, 1.72 W g-1), drying pressures (30 to 147 mbar), and CSM layer thickness (1 to 4 mm). The drying rate based on moisture ratio was estimated using the Page model. The specific energy consumption was lowest as CSM dried from 50 to 15% moisture, then rapidly increased as the drying rate decreased due to a low ε” at <15% moisture. The loss factor ε” of CSM at 2.45 GHz increased up to 35% total solids, then steadily decreased up to 95% solids. The specific electrical energy demand of the MVD unit, which accounted for all utility flows at full capacity, was 2.85 kWh kg-1 water evaporated, with the magnetrons accounting for 2.14 kWh kg-1. This study provides valuable data on drying kinetics and energy demand during MVD of CSM, and an approach that can help processors assess the energy efficiency of MVD for various food applications.

Performance analysis of solar-biomass hybrid heat pump batch-type horizontal fluidized bed dryer using multi-stage heat exchanger for paddy drying

The paddy drying performance of a solar-biomass hybrid heat pump batch-type horizontal fluidized bed dryer (FBD) using a multi-stage heat exchanger was investigated. Drying experiments were performed under two different operating modes: the drying system with heat recovery (FBD-WHR mode) and the drying system without heat recovery (FBD-NHR mode). The FBD-NHR and FBD-WHR reduced the paddy moisture content from 28.52% dry basis (db) to 16.28% db with a mass flow rate of 0.10328 kg/s in 26.76 and 23.68 min, at average temperatures of 69.8 and 70.3 °C, respectively. The average specific energy consumption, specific thermal energy consumption, and specific electrical energy consumption were 8.85, 5.81, and 3.04 kWh/kg, respectively, for FBD-NHR and 7.43, 4.22, and 3.21 kWh/kg, respectively, for FBD-WHR. The average specific moisture extraction rates were 0.19 and 0.24 kg/kWh for FBD-NHR and FBD-WHR, respectively. The average pick-up and exergy efficiencies were 41.3% and 51.0%, respectively, for FBD-NHR and 40.4% and 57.7%, respectively, for FBD-WHR. The improvement potential ranged from 199.5 to 628.7 W for FBD-NHR and from 113.1 to 669.1 W for FBD-WHR, with average values of 295.6 and 247.7 W, respectively. The thermal dryer efficiencies varied from 3.5% to 29.6% and from 3.7% to 40.8% for FBD-NHR and FBD-WHR, respectively, with average values of 16.5% and 21.8%, respectively. Thermal energy savings of approximately 46.7% were achieved by using the FBD-WHR mode.

Performance Comparison of Cross- and Forward-Flow Configurations for Multiple-Effect Vacuum Membrane Distillation.

This work addresses retrofitting the infrastructure of multiple-effect vacuum membrane distillation (V-MEMD) units by using cross-flow configuration (CFC). In this configuration, the feed water is evenly divided and distributed over the effects. In this case, the feed water stream for each effect is kept at a high temperature and low flow rate. This will lead to an increase in the vapor pressure gradient across the hydrophobic membrane and can also maintain the thermal energy of the stream inside the individual effect. It is found that CFC improves internal and global performance indicators of productivity, energy, and exergy. A mathematical model was used to investigate the performance of such a modification as compared to the forward-flow configuration (FFC). The cross-flow configuration led to a clear improvement in the internal performance indicators of the V-MEMD unit, where specifically the mass flux, recovery ratio, gain output ratio, and heat recovery factor were increased by 2 to 3 folds. Moreover, all the global performance indicators were also enhanced by almost 2 folds, except for the performance indicators related to the heat pump, which is used to cool the cold water during the operation of the V-MEMD unit. For the heat pump system, the specific electrical energy consumption, SEEC, and the exergy destruction percentage, Ψdes, under the best-operating conditions, were inferior when the feed water flow was less than 159 L/h. This can be attributed to the fact that the heat rejected from the heat pump system is not fully harnessed.

Investigation of a low-pressure flash evaporation desalination system powered by ocean thermal energy

To alleviate the consequences of the freshwater crisis and fully utilize marine resources in tropical coastal areas, this study presents a low-pressure flash evaporation desalination system driven by ocean thermal energy (OTE). Through gravity and atmospheric pressure, a natural vacuum can be formed in the evaporator, which achieves flash evaporation for warm surface seawater. Then, the vapour is condensed into freshwater via an inner coil condenser with flowing cold deep seawater. Using a water pump to fill the evaporator intermittently, the non-condensable gas accumulated in the desalination process can be thoroughly discharged. Based on the process of mass and heat transfer inside the system, a thermodynamic model was developed. Several performance evaluation indices, including water productivity, specific electrical energy consumption (SEEC) and recovery ratio (RR), were experimentally investigated under different parameters. The results indicate that productivity and SEEC are higher with increasing seawater flow rate and decreasing deep seawater temperature. Under a warm seawater temperature of 30 °C and a deep cold seawater temperature of 8 °C, the system obtained a maximum water productivity of 5.3 kg/h, and the corresponding SEEC and RR were 0.126 kWh/kg and 1.5%, respectively. Finally, compared with solar-driven desalination systems, the proposed OTE desalination system requires less energy consumption, which shows an attractive application prospect.

An Experimental Study of the Oxygen Permeability of a PET Film With a Nanosized Aluminum Oxide Layer

Results of an experimental study of the oxygen permeability of a PET film with nanosized aluminum oxide layers formed by reactive magnetron sputtering have been described. An experimental dependence of the oxygen permeability coefficient of PET film with the aluminum oxide layer in the range of 20 &amp;divide; 80 nm, providing its value up to 1 cm3/(m2∙24h∙0.1MPa), have been determined. The effect of various factors on the formation of a high-quality reproducible oxide PET film and the characteristics of a nanosized aluminum oxide layer and the specific electric energy consumption for the magnetron deposition of the layer has been defined. The planar surface structures and surface roughness parameters of PET and oxide films with layers of different thicknesses have been determined. A qualitative interpretation of the results has been given.