Banca de QUALIFICAÇÃO: FRANCINELSON PONTES DO CARMO

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : FRANCINELSON PONTES DO CARMO
DATE: 22/12/2023
TIME: 09:00
LOCAL: meet.google.com/cmp-vyjt-dmf
TITLE:

INTEGRATION OF SUSTAINABLE PHASE CHANGE MATERIALS INTO
SOLAR DESALINATION SYSTEMS: MODELING
MATHEMATICS, EXPERIMENTAL VALIDATION AND EVALUATION OF THE
IMPROVEMENT OF THERMOPHYSICAL PROPERTIES

KEY WORDS:

solar desalination; phase change materials; PCM; modeling and simulation.

PAGES: 36
BIG AREA: Engenharias
AREA: Engenharia Química
SUMMARY:

Projections for the coming years indicate an increase in global dependence on fossil fuels. Oil demand is predicted to peak between 2024 and 2027, with natural gas also showing a 10% to 20% increase by 2035 compared to 2022. By 2050, global demand for natural gas and oil is expected to grow by 28% and 17%, respectively. These energy sources have significant environmental impacts, from extraction, storage and transportation, including oil spills that can pollute bodies of water. However, the most serious environmental problems arise when these fuels are burned to produce energy. Among clean energy sources, solar energy deserves special attention.
Looking at investments in alternative energy sources, there is a steady growth in interest in solar energy between 2020 and 2022. Last year, a total of US$298.21 billion was invested in solar energy, with a focus on photovoltaic panels, and US$9.30 billion was allocated to the use of solar thermal energy. The use of solar thermal energy has gained prominence in research, mainly in its application in water desalination technologies. In current saline and/or brackish water desalination processes, salt water is subjected to energy in the form of pressure, heat or electricity and is separated into two streams: one composed of desalinated water (the objective of the process) and the other where it is find the
reject, that is, the brine. Desalination can be classified into two categories: desalination via membrane separation and desalination via thermal processes. Solar distillation is an underutilized method globally due to challenges in still design, resulting in relatively low freshwater production. The main limitation in solar still designs is the intermittency of energy
solar, which makes it impossible to operate the equipment in the absence of sunlight. To overcome this problem, researchers have widely explored the integration of solar energy thermal energy storage (AET) systems with stills. The purpose of this dissertation is to develop mathematical models for conventional solar distillation systems that incorporate eventually improved organic PCMs.
from a thermophysical point of view. Initially, distiller configurations and organic PCM will be selected based on pre-established criteria. Mathematical models will be used to check whether the system has insufficient thermal power, which would prevent it from operating throughout the night. If this occurs, a review of the technical literature will be carried out, seeking the most recent advances in improving the thermophysical properties of organic PCMs. The results obtained will be incorporated into global energy and exergy balances of the most common configurations of solar stills
found in the literature.

COMMITTEE MEMBERS:
Presidente - 2929066 - ANDRE LUIS LOPES MORIYAMA
Interno - 1584174 - DOMINGOS FABIANO DE SANTANA SOUZA
Externa ao Programa - 1224101 - VANJA MARIA DE FRANCA BEZERRA - UFRN