Pub Date : 2022-10-26DOI: 10.1109/SIITME56728.2022.9987958
Melinda Vajda, Daiana Albulescu, D. Ursu, Elisei Ilieş, Magdalena Marinca, A. Gontean, N. Miclău, N. Duțeanu, S. Bularka, M. Miclau
As an environmentally compatible device, combining low costs, transparency of the entire Photosynthetic Active Radiation (PAR) domain, and an optimal efficiency of the solar cell for the elimination of any energy provided by the conventional sources, dye-sensitized solar cells (DSSCs) are proposed as the most promising candidates for a wavelength-selective photovoltaic greenhouse. Here, we report the influence of temperature and a small concentration of water in the organic electrolyte on the photocurrent density–photovoltage (J–V) characteristics of UV dye-sensitized solar cells. Our results have highlighted that using a special architecture of the photoanode, up to 60 °C, no degradation effect of 10 % water on the photovoltaic performance of DSSC was observed. On the contrary, a small concentration of water has a beneficial effect on the thermal stability of the DSSC confirming the attractive premises for future implementation of DSSCs in the roof of the greenhouse and the long-term stability in outdoor conditions.
{"title":"Preliminary study for outdoor testing: Effect of Moisture and Temperature on the Stability of UV Dye Sensitized Solar Cells","authors":"Melinda Vajda, Daiana Albulescu, D. Ursu, Elisei Ilieş, Magdalena Marinca, A. Gontean, N. Miclău, N. Duțeanu, S. Bularka, M. Miclau","doi":"10.1109/SIITME56728.2022.9987958","DOIUrl":"https://doi.org/10.1109/SIITME56728.2022.9987958","url":null,"abstract":"As an environmentally compatible device, combining low costs, transparency of the entire Photosynthetic Active Radiation (PAR) domain, and an optimal efficiency of the solar cell for the elimination of any energy provided by the conventional sources, dye-sensitized solar cells (DSSCs) are proposed as the most promising candidates for a wavelength-selective photovoltaic greenhouse. Here, we report the influence of temperature and a small concentration of water in the organic electrolyte on the photocurrent density–photovoltage (J–V) characteristics of UV dye-sensitized solar cells. Our results have highlighted that using a special architecture of the photoanode, up to 60 °C, no degradation effect of 10 % water on the photovoltaic performance of DSSC was observed. On the contrary, a small concentration of water has a beneficial effect on the thermal stability of the DSSC confirming the attractive premises for future implementation of DSSCs in the roof of the greenhouse and the long-term stability in outdoor conditions.","PeriodicalId":300380,"journal":{"name":"2022 IEEE 28th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130531413","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 : 2022-10-26DOI: 10.1109/SIITME56728.2022.9987959
V. Ionescu, A. Neagu
This study investigates the thermal and electrical behaviour of an energetic system composed of a thermoelectric cooler (TEC) module, used as a heat source, and a thermoelectric generator (TEG) module. TEG device worked in this configuration as an energy conversion module for heat recovery and the use of heat released by TEC during its cooling. Under a temperature gradient between its external plates, the TEG module converts thermal energy into electrical energy. TEC-TEG system is cooled in two ways: by natural convection cooling with air circulation under free convection through aluminium heat sink fins and forced convection cooling with a system containing an externally powered cooler in direct contact with the heat sink. The mode of operation for the TEC-TEG system was tested under a gradually increased load resistance, from 3 Ω to 80 Ω. The main critical parameters were investigated and discussed: temperatures of thermoelectric modules, the temperature difference between TEG plates, output voltage, current, power and efficiency of thermoelectric conversion.
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Pub Date : 2022-10-26DOI: 10.1109/SIITME56728.2022.9988695
Madalin Moise, M. Pantazica, Bogdan Nedelcu
This paper presents a wireless measuring and data acquisition system for a hydro-generator's stator and rotor which are part of the subsystem for monitoring, analysis, and diagnosis of the hydropower unit (hydraulic turbine and hydro-generator) for the production of electricity from hydroelectric power plants [1]. The system aims to measure the air gap, the magnetic field and the rotor pole temperature. The advantage over other existing devices is the immunity to EMI (Electro-Magnetic Interferences) of the air gap readings and the fact that there is no fixed power supply, no battery, but a supercapacitor for energy storage. The reading / transmission of information from the sensors is done multiplexed in order to rationalize the power consumption.
{"title":"Implementation of a Wireless Measuring and Data Acquisition System for Hydro-generator Monitoring","authors":"Madalin Moise, M. Pantazica, Bogdan Nedelcu","doi":"10.1109/SIITME56728.2022.9988695","DOIUrl":"https://doi.org/10.1109/SIITME56728.2022.9988695","url":null,"abstract":"This paper presents a wireless measuring and data acquisition system for a hydro-generator's stator and rotor which are part of the subsystem for monitoring, analysis, and diagnosis of the hydropower unit (hydraulic turbine and hydro-generator) for the production of electricity from hydroelectric power plants [1]. The system aims to measure the air gap, the magnetic field and the rotor pole temperature. The advantage over other existing devices is the immunity to EMI (Electro-Magnetic Interferences) of the air gap readings and the fact that there is no fixed power supply, no battery, but a supercapacitor for energy storage. The reading / transmission of information from the sensors is done multiplexed in order to rationalize the power consumption.","PeriodicalId":300380,"journal":{"name":"2022 IEEE 28th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125035212","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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