Three research teams from the Universitat Jaume I are working on improving energy efficiency in refrigeration, WWTP and optoelectronic devices.



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## Three research teams from the Universitat Jaume I are working on improving energy efficiency in refrigeration, WWTP and optoelectronic devices.

06/02/2023 |
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* [![ pei-energia IMG_8343](/com/investigacio/arxiu/noticies/2023/2/pei-energia/IMG_8343.jpg)](#)

Three projects of the Universitat Jaume I of Castelló have obtained more than three hundred thousand euros in the last call of the National Plan for Scientific, Technical and Innovation Research 2021-2023 in the field of energy to improve the efficiency of refrigeration technology, oxygen transfer in wastewater treatment plants and optoelectronic devices such as solar cells and light-emitting diodes (LEDs).

The project "Advanced multi-stage cooling systems for low temperature applications (HELTHA)", led by researchers Daniel Sánchez and Rodrigo Llopis of the Thermal Engineering Research Group (GIT) and in which the Thermal and Fluids Engineering Group (ITF) of the Public University of Navarra also participates, aims to advance knowledge and technology of cooling to provide solutions that improve its energy efficiency, the use of which is responsible for 7.8% of greenhouse gas emissions.

To this end, the two research teams will work to expand the map of natural refrigeration technologies in three aspects: new high-efficiency refrigeration architectures, new refrigerant blends, and hybrid applications of two technologies together (vapour compression and thermoelectricity). The development of this project has two coordinated sub-projects called ARALT and NOTEVAC, led by the Thermal Engineering Research Group (GIT) and the Thermal and Fluids Engineering Group (ITF), respectively. The joint budget allocation was 242,000 euros, with 133,100 euros for the project developed at the UJI.

The study "Improving energy efficiency in WWTPs by intensifying oxygen transfer processes through dynamic ventilation and increased agitation", led by researchers Sergio Chiva and Raúl Martínez of the Multiphase Fluids Group (GFM), will focus on studying and improving the efficiency of one of the most energy-consuming processes in wastewater treatment plants (WWTPs), which is the transfer of oxygen through the ventilation process, which accounts for about 50% in treatment plants with active sludge.

To this end, the research team will carry out an experimental study of two intensification procedures (use of submersible agitators and dynamic ventilation) with the aim of improving the efficiency of the oxygen transfer process and favouring energy savings. Funded with 114,950 euros, the experimentation will be carried out in two operating facilities, one of which is the CIRTESU, the first Centre for Research in Robotics and Underwater Technologies of the Valencian Community, located on the university campus in Castellón.

The project "Perovskite quantum dots (PQD) completely covered by a crystalline layer through core/shell engineering for stable light-emitting diodes (LED) (She-LED)", led by researcher Sofía Masi of the Advanced Semiconductor Group (GAS) and the Institute for Advanced Materials (INAM), aims to improve the efficiency of optoelectronic devices such as solar cells and light-emitting diodes (LED) to develop energy-saving technologies.

Funded with 84,700 euros, the study will focus on optimising the long-term stability of perovskite quantum dots and photoluminescence quantum yield to manufacture stable optoelectronic devices in air and LEDs (white or monochromatic) with properties beyond the current state of the art in terms of light emission, brightness, luminance and environmental and aquatic stability that will also have applications in photocatalysis.

SPANISH RESEARCH PLAN

The research staff of the Universitat Jaume I of Castelló has obtained 4.17 million euros from the State Research Agency, two more than in the previous call, for the development of 38 new research projects of the National Plan for Scientific, Technical and Innovation Research 2021-2023, which focuses its objectives on the most strategic sectors for recovery, such as health, ecological transition and digitalisation.

The success rate (number of projects approved out of the total submitted) stands at 70% (the national average is 50%) and with an average funding per project of around 110,000 euros and 14 more projects than in the previous edition. With the 2021 call, the Universitat Jaume I achieves the 23.7 million euros of funding for R+D+i since the launch of the Spanish Strategy for Science, Technology and Innovation a decade ago.

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