Banca de DEFESA: CALINE NUNES DE CARVALHO

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : CALINE NUNES DE CARVALHO
DATE: 31/03/2022
TIME: 09:00
LOCAL: on line
TITLE:

Optimization of the manufacture process of a well logging tool for carbon footprint reduction

KEY WORDS:

Greenhouse gas, carbon footprint, continuous furnace, brazing, industrial refrigeration

PAGES: 123
BIG AREA: Engenharias
AREA: Engenharia Química
SUBÁREA: Tecnologia Química
SPECIALTY: Balanços Globais de Matéria e Energia
SUMMARY:

One of the most severe issues of the current society is the global climate change caused by uncontrolled greenhouse gas (GHG) emissions. Determining the carbon footprint (CF) of any processes or products is an important step to identify activities with highest potential of GHG emissions. Industry processes represent almost 30% of the global GHG emissions. Despite the efforts to green the global economy, considerable attention must be focused to assess and characterize the environmental impact of products and processes from all different industry sectors. Heat treatment methods are often used to manufacture critical parts for petrochemical, aerospace, and automotive industries. The continuous hydrogen furnace is an equipment that provides the controlled atmosphere required for heat treatment, producing high integrity assemblies. This research presents a proposal to quantify the CF and to define a strategy to reduce it related to the application of hydrogen furnaces for brazing processes. Initially it was done a systematic and critical bibliometric analysis of CF reduction techniques implemented in different industry sectors along the last three decades by using the softwares StArt® and the VOSViewer®. In addition to guiding de methodology choose for this research, the framework and results of this systematic literature review can be used as a baseline for future empirical researches also providing innovative directions. The proposed method is based on modifying the furnace cooling system by replacing the current water supply for a closed loop. For that, two scenarios have been proposed using the UniSim® software: one connecting the water flow from the furnace to the facility chiller system, and another one keeping the same conditions as water closed loop but changing the chiller refrigerant from R-134a to ammonia. The data obtained as a result of the simulation were essential to estimate the energy needs of each scenario. Also considering furnace manufacturing manual and datasheet, the carbon footprints were determined using the software SimaPro®. The change on the furnace water supply for a closed loop allowed a significantly decrease of water consumption, eliminated the monthly disposal of 800,000 liters of that resource. The application of ammonia as the refrigerant generated 97% reduction of the overall carbon footprint, leading therefore to a climate change mitigation.

BANKING MEMBERS:
Presidente - 347057 - TEREZA NEUMA DE CASTRO DANTAS
Externo ao Programa - 347289 - AFONSO AVELINO DANTAS NETO
Externa ao Programa - 1415657 - ANDREA OLIVEIRA NUNES
Externa à Instituição - PATRÍCIA CRISTINA DE ARAÚJO PUGLIA DE CARVALHO - UFMS
Externo à Instituição - PEDRO TUPÃ PANDAVA AUM - UFPA