Análise da substituição de uma geradora de água quente alimentada por gás liquefeito de petróleo por uma geradora alimentada a pellet

Abstract

The history of global industry is directly linked to the use of fossil fuels as an energy source, especially liquefied petroleum gas (LPG), which has been used for decades in the most diverse production sectors. It is undeniable that oil and its derivatives have this contribution and leading role in the development of the global industrial matrix as we know it today, however, history has also shown at various times other nuances of this dependence on oil and its derivatives, one of which is The main aspects of this dependence are linked to the volatility of its price. Given this scenario, this course completion work was developed at the company Todeschini, with the aim of determining the technical and financial feasibility of replacing a hot water generator currently powered by LPG fuel, with another piece of equipment that operates with gas pellets. pine as standard fuel. The work began with a bibliographical review on the types of boilers and their respective operating methods, followed by a bibliographical research on the concepts of heat transfer and an in-depth look at fossil and renewable biomass fuels, also in this review. the concepts of complete and incomplete combustion were revisited. During the work, measurements were made of the volumetric flow and combustion parameters of the current equipment. This data was collected with the support of the company Tomé Engenharia de Energias. Subsequently, the mass flow of the current equipment was evidenced through an equation, with an approximate value of 26.91 kg/s, then the thermal efficiency of the current equipment was calculated, which was estimated at 244,488.39 kcal/h. Furthermore, with information on current thermal efficiency, a new hot water generator with a capacity of 309,600 kcal/h was specified to meet the current process. Finally, the financial viability of the project was verified with the new hot water generator using pine pellets as fuel. If the project were implemented, it would present a return on investment in approximately 44 months. [resumo fornecido pelo autor]