Pub Date : 2022-07-06DOI: 10.1109/IYCE54153.2022.9857540
László Székely, I. Kiss, R. Cselkó
This work investigates the change of separation efficiency of an electrostatic precipitator due to different operating power supply modes. The power supply can operate with DC and impulse mode, with almost ten different settings. The dust flow is higher than its originally planned. A correlation can be observed between the corona current and dust emission, but also several parameter connections are presented, such as the effect of the gas flow rate or the amount of incoming dust on the separation. This article aims to set up an optimal operation to minimize emissions.
{"title":"Examination of the separation efficiency of an industrial ESP - a case study","authors":"László Székely, I. Kiss, R. Cselkó","doi":"10.1109/IYCE54153.2022.9857540","DOIUrl":"https://doi.org/10.1109/IYCE54153.2022.9857540","url":null,"abstract":"This work investigates the change of separation efficiency of an electrostatic precipitator due to different operating power supply modes. The power supply can operate with DC and impulse mode, with almost ten different settings. The dust flow is higher than its originally planned. A correlation can be observed between the corona current and dust emission, but also several parameter connections are presented, such as the effect of the gas flow rate or the amount of incoming dust on the separation. This article aims to set up an optimal operation to minimize emissions.","PeriodicalId":248738,"journal":{"name":"2022 8th International Youth Conference on Energy (IYCE)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123830515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-06DOI: 10.1109/IYCE54153.2022.9857527
I. Táczi, I. Vokony, B. Hartmann, G. Péter
The growing number of distributed energy resources transforms the electricity distribution into an active system. This leads to integration challenges in the operation, while the extensive topologies with low level of instrumentation could have observability issues. Control centers of the future will have numerous advanced energy management options, but the basis of those applications must be a reliable system representation. Distribution system state estimation is an important research area and recent advancements in smart grids offer new data sources and simplifications in the process. Assets with distributed control capabilities and flexible resources are highly reliable pseudo measurement inputs for the algorithm which can help to reduce the estimation error and solve observability issues even on low voltage grids. This paper overviews the role of smart assets in the state estimation process and analyzes the characteristics of serial voltage regulators, smart distribution transformers, energy storage systems, distributed generator inverter control and direct load control. The goal is to integrate these devices in the weighted least square optimization algorithm to estimate the voltages and currents in the low voltage areas. The analysis concludes in the methodical description as further research will deal with the algorithmic implementation. Smart assets can be developed into cornerstones of industrial distribution system state estimators in critical areas to help operators keep the power quality and security of supply.
{"title":"Low voltage state estimation based operation analysis of smart distribution assets","authors":"I. Táczi, I. Vokony, B. Hartmann, G. Péter","doi":"10.1109/IYCE54153.2022.9857527","DOIUrl":"https://doi.org/10.1109/IYCE54153.2022.9857527","url":null,"abstract":"The growing number of distributed energy resources transforms the electricity distribution into an active system. This leads to integration challenges in the operation, while the extensive topologies with low level of instrumentation could have observability issues. Control centers of the future will have numerous advanced energy management options, but the basis of those applications must be a reliable system representation. Distribution system state estimation is an important research area and recent advancements in smart grids offer new data sources and simplifications in the process. Assets with distributed control capabilities and flexible resources are highly reliable pseudo measurement inputs for the algorithm which can help to reduce the estimation error and solve observability issues even on low voltage grids. This paper overviews the role of smart assets in the state estimation process and analyzes the characteristics of serial voltage regulators, smart distribution transformers, energy storage systems, distributed generator inverter control and direct load control. The goal is to integrate these devices in the weighted least square optimization algorithm to estimate the voltages and currents in the low voltage areas. The analysis concludes in the methodical description as further research will deal with the algorithmic implementation. Smart assets can be developed into cornerstones of industrial distribution system state estimators in critical areas to help operators keep the power quality and security of supply.","PeriodicalId":248738,"journal":{"name":"2022 8th International Youth Conference on Energy (IYCE)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121531614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-06DOI: 10.1109/IYCE54153.2022.9857531
Kende Kocsis
This paper discusses control solutions for the heating needs of a multifunctional office and residential building. The building is heated by district heating and heat pumps, whose different bivalent plants are analysed. To determine these bivalent operating states, optimisation calculations were performed in terms of primary energy consumption, operating costs and CO2 emissions. In summary we can conclude the optimal operating mechanism.
{"title":"A heat pump strategy to meet the simultaneous heating and cooling needs of a multifunctional office and residential building","authors":"Kende Kocsis","doi":"10.1109/IYCE54153.2022.9857531","DOIUrl":"https://doi.org/10.1109/IYCE54153.2022.9857531","url":null,"abstract":"This paper discusses control solutions for the heating needs of a multifunctional office and residential building. The building is heated by district heating and heat pumps, whose different bivalent plants are analysed. To determine these bivalent operating states, optimisation calculations were performed in terms of primary energy consumption, operating costs and CO2 emissions. In summary we can conclude the optimal operating mechanism.","PeriodicalId":248738,"journal":{"name":"2022 8th International Youth Conference on Energy (IYCE)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127517471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-06DOI: 10.1109/IYCE54153.2022.9857520
Bence Sütő, B. Sinkovics, I. Táczi, L. Barancsuk, Beáta Polgári, P. Sőrés, B. Hartmann, D. Divényi, I. Vokony, D. Csercsik
The H2020 INTERRFACE project designs, develops, and exploits an Interoperable pan-European Grid Services Architecture to act as the interface between the power system (TSO and DSO) and the customers and allow the seamless and coordinated operation of all stakeholders to use and procure common services. The project exploits state-of-the-art digital tools based on peer-to-peer (P2P) local market to provide new opportunities for electricity market participation and thus engage consumers into the INTERRFACE proposed market structures that are designed to exploit Distributed Energy Resources and empowers customers to become active market participants. In this paper, a network modeling method is introduced and validated through the metering data of a test area. The model considers voltage limits, asymmetry, and overloading violations. Simulation results show that the modeling considerations are adequate to analyze the effects on the local grid assets and provide reflective tariff signals for proper grid utilization. Therefore, the proposed design can serve as the network calculation principle of low voltage P2P markets in the future.
{"title":"Feasibility study of a local peer-to-peer energy market: Implications on a real-life LV distribution grid","authors":"Bence Sütő, B. Sinkovics, I. Táczi, L. Barancsuk, Beáta Polgári, P. Sőrés, B. Hartmann, D. Divényi, I. Vokony, D. Csercsik","doi":"10.1109/IYCE54153.2022.9857520","DOIUrl":"https://doi.org/10.1109/IYCE54153.2022.9857520","url":null,"abstract":"The H2020 INTERRFACE project designs, develops, and exploits an Interoperable pan-European Grid Services Architecture to act as the interface between the power system (TSO and DSO) and the customers and allow the seamless and coordinated operation of all stakeholders to use and procure common services. The project exploits state-of-the-art digital tools based on peer-to-peer (P2P) local market to provide new opportunities for electricity market participation and thus engage consumers into the INTERRFACE proposed market structures that are designed to exploit Distributed Energy Resources and empowers customers to become active market participants. In this paper, a network modeling method is introduced and validated through the metering data of a test area. The model considers voltage limits, asymmetry, and overloading violations. Simulation results show that the modeling considerations are adequate to analyze the effects on the local grid assets and provide reflective tariff signals for proper grid utilization. Therefore, the proposed design can serve as the network calculation principle of low voltage P2P markets in the future.","PeriodicalId":248738,"journal":{"name":"2022 8th International Youth Conference on Energy (IYCE)","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116994908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-06DOI: 10.1109/IYCE54153.2022.9857528
Jure Gramc, R. Stropnik, Andrej Lotrič, M. Mori
Industrial activities are closely related to environmental issues which are displayed as frequent extreme weather conditions, natural disasters, and other intensive changes. European Green Deal is the latest European action plan to mitigate climate change and introduce sustainable development by policymakers. The environmental impact of companies is very important to meet future sustainability. One of the basic steps in the analysis of the environmental profile of the company is the identification of hot spots by using the carbon footprint methodology. The workflow and the tool for the carbon footprint methodology implementation were developed for the case of strategic planning for a medium-sized company following the standardized methodology given by the GHG Protocol. Relevant emission sources within the hot spots are identified and analyzed. The sensitivity analysis for different pre-defined scenarios is made to meet the company's mid and long-term strategic goals. Results show that the main contributors to the overall carbon footprint are purchased electricity, purchased heat, and combustion of fuels in company-owned/controlled vehicles. GHG emissions from purchased electricity and heat heavily depend on emission factors of electricity and heat sources. Also, changes in electricity and heat supply sources have a significant impact on GHG emissions.
{"title":"The impact of sustainable development approach on carbon footprint of the company","authors":"Jure Gramc, R. Stropnik, Andrej Lotrič, M. Mori","doi":"10.1109/IYCE54153.2022.9857528","DOIUrl":"https://doi.org/10.1109/IYCE54153.2022.9857528","url":null,"abstract":"Industrial activities are closely related to environmental issues which are displayed as frequent extreme weather conditions, natural disasters, and other intensive changes. European Green Deal is the latest European action plan to mitigate climate change and introduce sustainable development by policymakers. The environmental impact of companies is very important to meet future sustainability. One of the basic steps in the analysis of the environmental profile of the company is the identification of hot spots by using the carbon footprint methodology. The workflow and the tool for the carbon footprint methodology implementation were developed for the case of strategic planning for a medium-sized company following the standardized methodology given by the GHG Protocol. Relevant emission sources within the hot spots are identified and analyzed. The sensitivity analysis for different pre-defined scenarios is made to meet the company's mid and long-term strategic goals. Results show that the main contributors to the overall carbon footprint are purchased electricity, purchased heat, and combustion of fuels in company-owned/controlled vehicles. GHG emissions from purchased electricity and heat heavily depend on emission factors of electricity and heat sources. Also, changes in electricity and heat supply sources have a significant impact on GHG emissions.","PeriodicalId":248738,"journal":{"name":"2022 8th International Youth Conference on Energy (IYCE)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126175796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-06DOI: 10.1109/IYCE54153.2022.9857547
Merse Szalai, László Székely, R. Cselkó
The detectability of fault locations in low voltage distribution cables were not evolved as much as in higher voltage levels. The goal of our work is to find a similar method to detect defects in the low voltage distribution system. One possible method is the detection of intermittent arcing, which is a clear sign of ongoing degradation. We should be able to determine where discharges occur in the grid. We present an attempt to apply smart meters to detect the defects, as this would easily allow to alert the system operator. In this study we investigated fault-free and intentionally damaged underground cables. Our goal was to show that we can distinguish the current or voltage signals caused by discharges via smart meters on damaged cables from the completely intact cables.
{"title":"Detection of local defects in low-voltage distribution cables","authors":"Merse Szalai, László Székely, R. Cselkó","doi":"10.1109/IYCE54153.2022.9857547","DOIUrl":"https://doi.org/10.1109/IYCE54153.2022.9857547","url":null,"abstract":"The detectability of fault locations in low voltage distribution cables were not evolved as much as in higher voltage levels. The goal of our work is to find a similar method to detect defects in the low voltage distribution system. One possible method is the detection of intermittent arcing, which is a clear sign of ongoing degradation. We should be able to determine where discharges occur in the grid. We present an attempt to apply smart meters to detect the defects, as this would easily allow to alert the system operator. In this study we investigated fault-free and intentionally damaged underground cables. Our goal was to show that we can distinguish the current or voltage signals caused by discharges via smart meters on damaged cables from the completely intact cables.","PeriodicalId":248738,"journal":{"name":"2022 8th International Youth Conference on Energy (IYCE)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127776370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-06DOI: 10.1109/IYCE54153.2022.9857546
MD Moshiur Rahman Chowdhury, Z. Sütő
Active rectifiers are commonly used converters in interfacing AC and DC grids due to their bidirectional power flow capabilities. Nowadays the development workflow of power converters includes real-time simulation steps to validate control concepts with hardware implementation in a safe environment. The paper presents the development process of a real-time HIL simulation framework for rapid-prototyping of advanced control algorithms of an Active-Front-End (AFE) rectifier. The control concepts and the main circuit models are realized in Matlab/Simulink and fitted for code-generation.
{"title":"Validation of real-time simulation model of a three-phase Active-Front-End (AFE) rectifier","authors":"MD Moshiur Rahman Chowdhury, Z. Sütő","doi":"10.1109/IYCE54153.2022.9857546","DOIUrl":"https://doi.org/10.1109/IYCE54153.2022.9857546","url":null,"abstract":"Active rectifiers are commonly used converters in interfacing AC and DC grids due to their bidirectional power flow capabilities. Nowadays the development workflow of power converters includes real-time simulation steps to validate control concepts with hardware implementation in a safe environment. The paper presents the development process of a real-time HIL simulation framework for rapid-prototyping of advanced control algorithms of an Active-Front-End (AFE) rectifier. The control concepts and the main circuit models are realized in Matlab/Simulink and fitted for code-generation.","PeriodicalId":248738,"journal":{"name":"2022 8th International Youth Conference on Energy (IYCE)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121566877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-06DOI: 10.1109/IYCE54153.2022.9857525
Nejc Mlakar, Andrej Lotrič, M. Sekavčnik, M. Mori, Samuel Simon Araya, S. J. Andreasen, Jakob Rabjerg Vang
The objective of this paper is to determine the effect of accelerated start-stop cycling protocol on a high temperature polymer electrolyte membrane fuel cell performance under operating temperature of 160 $^{circ}mathbf{C}$ and current density of 0.4 A cm-2. The degradation rates during 200 start-stop cycles are analysed and discussed. The results are supported by polarization curves and electrochemical impedance spectroscopy. The overall degradation over 200 start-stop cycles is -49 mV and the average degradation rate per one cycle is -0.25 mV.
本文的目的是在工作温度160 $^{circ}mathbf{C}$和电流密度0.4 a cm-2的情况下，确定加速启停循环方案对高温聚合物电解质膜燃料电池性能的影响。分析和讨论了200次启停循环的降解率。结果得到了极化曲线和电化学阻抗谱的支持。在200个启停循环中，总体退化为-49 mV，每个循环的平均退化率为-0.25 mV。
{"title":"Evaluation of performance degradation of high temperature proton exchange membrane fuel cells using a simple start-stop testing protocol","authors":"Nejc Mlakar, Andrej Lotrič, M. Sekavčnik, M. Mori, Samuel Simon Araya, S. J. Andreasen, Jakob Rabjerg Vang","doi":"10.1109/IYCE54153.2022.9857525","DOIUrl":"https://doi.org/10.1109/IYCE54153.2022.9857525","url":null,"abstract":"The objective of this paper is to determine the effect of accelerated start-stop cycling protocol on a high temperature polymer electrolyte membrane fuel cell performance under operating temperature of 160 $^{circ}mathbf{C}$ and current density of 0.4 A cm-2. The degradation rates during 200 start-stop cycles are analysed and discussed. The results are supported by polarization curves and electrochemical impedance spectroscopy. The overall degradation over 200 start-stop cycles is -49 mV and the average degradation rate per one cycle is -0.25 mV.","PeriodicalId":248738,"journal":{"name":"2022 8th International Youth Conference on Energy (IYCE)","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130714033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-06DOI: 10.1109/IYCE54153.2022.9857535
Marks Marinbahs, Genadijs Kobenkins, V. Pavelko, Anatolijs Bižāns, Nikita Rilevs, Oļegs Sļiskis
The goal is a model-experimental study of the vibration that occurs in the nodes of the motor-gear unit (hereinafter referred to as MGU) installed on the motor bogie of an electric train under operating conditions. Vibration measurement was carried out experimentally on a motor stand using vibration sensors of the SKF CMXA 80 type, installed on the casing of the traction gearbox and the frame of the traction motor. For measurements, a system was used that allows continuous recording of the vibration transducer signal over eight channels. Experimental data on the parameters of vibrations that occur on the bearing shield of the output shaft of the MGU were obtained by simulating the departure of a motor bogie by instantaneous load shedding. A pattern has been established that the vibration level under skid conditions in three coordinates X, Y, Z has sharp bursts of activity. During the MGU operation in the traction mode, it was found that a sharp increase in the amplitude of harmonics with frequencies that are multiples of the gear frequency is associated with the coincidence with the natural frequency of the MGU case. When switching to the coast down mode in the frequency range of about 1.5 kHz, a random vibration is recorded on the MGU body, the RMS acceleration value of which exceeds 50 $boldsymbol{mathrm{m}/mathrm{s}^{2}}$, which is comparable to the acceleration value when passing the skid.
{"title":"Determination of the Strength Characteristics of Traction Gears Under Shock Loads","authors":"Marks Marinbahs, Genadijs Kobenkins, V. Pavelko, Anatolijs Bižāns, Nikita Rilevs, Oļegs Sļiskis","doi":"10.1109/IYCE54153.2022.9857535","DOIUrl":"https://doi.org/10.1109/IYCE54153.2022.9857535","url":null,"abstract":"The goal is a model-experimental study of the vibration that occurs in the nodes of the motor-gear unit (hereinafter referred to as MGU) installed on the motor bogie of an electric train under operating conditions. Vibration measurement was carried out experimentally on a motor stand using vibration sensors of the SKF CMXA 80 type, installed on the casing of the traction gearbox and the frame of the traction motor. For measurements, a system was used that allows continuous recording of the vibration transducer signal over eight channels. Experimental data on the parameters of vibrations that occur on the bearing shield of the output shaft of the MGU were obtained by simulating the departure of a motor bogie by instantaneous load shedding. A pattern has been established that the vibration level under skid conditions in three coordinates X, Y, Z has sharp bursts of activity. During the MGU operation in the traction mode, it was found that a sharp increase in the amplitude of harmonics with frequencies that are multiples of the gear frequency is associated with the coincidence with the natural frequency of the MGU case. When switching to the coast down mode in the frequency range of about 1.5 kHz, a random vibration is recorded on the MGU body, the RMS acceleration value of which exceeds 50 $boldsymbol{mathrm{m}/mathrm{s}^{2}}$, which is comparable to the acceleration value when passing the skid.","PeriodicalId":248738,"journal":{"name":"2022 8th International Youth Conference on Energy (IYCE)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132834968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-06DOI: 10.1109/IYCE54153.2022.9857543
A. Predajnianska, J. Takács, O. Šikula
Thermal baths in Slovakia produce waste pool water, which is most often discharged to the water recipient. Cooling of waste pool water is ensured by means of cooling ponds or canals. However, cooling the water from the pool is not sufficient. Therefore, thermal bath operators face sanctions for environmental pollution. The possibility of ensuring the maximum temperature of waste pool water is by means of a heat recovery system, which will be presented in the article. If it is not possible to apply a heat recovery system, it is necessary to ensure sufficient cooling of the water in another way. Another possibility of increasing the cooling of wastewater is to ensure a sufficient evaporate area which has a great effect on water cooling. Another crucial parameter that affects the cooling of wastewater is the speed of air flow above the water surface. The article is focused on influence of air flow rate and evaporation surface on cooling of waste pool water produced by thermal baths and briefly introduces another wastewater cooling option, which is a heat recovery system. The results presented in the article indicate a significant impact of the evaporation area on the heat flow through the evaporation.
{"title":"Influence of Air Flow Rate and Evaporation Surface on Cooling of Waste Pool Water Produced by Thermal Baths","authors":"A. Predajnianska, J. Takács, O. Šikula","doi":"10.1109/IYCE54153.2022.9857543","DOIUrl":"https://doi.org/10.1109/IYCE54153.2022.9857543","url":null,"abstract":"Thermal baths in Slovakia produce waste pool water, which is most often discharged to the water recipient. Cooling of waste pool water is ensured by means of cooling ponds or canals. However, cooling the water from the pool is not sufficient. Therefore, thermal bath operators face sanctions for environmental pollution. The possibility of ensuring the maximum temperature of waste pool water is by means of a heat recovery system, which will be presented in the article. If it is not possible to apply a heat recovery system, it is necessary to ensure sufficient cooling of the water in another way. Another possibility of increasing the cooling of wastewater is to ensure a sufficient evaporate area which has a great effect on water cooling. Another crucial parameter that affects the cooling of wastewater is the speed of air flow above the water surface. The article is focused on influence of air flow rate and evaporation surface on cooling of waste pool water produced by thermal baths and briefly introduces another wastewater cooling option, which is a heat recovery system. The results presented in the article indicate a significant impact of the evaporation area on the heat flow through the evaporation.","PeriodicalId":248738,"journal":{"name":"2022 8th International Youth Conference on Energy (IYCE)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123503755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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