Análise do rendimento de uma caldeira flamotubular sem o reaproveitamento de retorno de condensado através de um pré aquecedor de água
This paper presents the analysis, sizing and installation of a heat exchanger in a threepass flamotubular boiler that operates with natural gas. The boiler outlet gases at 200ºC were used to preheat the available boiler feed water to 30ºC. The method adopted for the heat exchanger sizing was the e...
| Autor principal: | Freitas, Marcelo da Costa |
|---|---|
| Grau: | Trabalho de Conclusão de Curso |
| Idioma: | por |
| Publicado em: |
Brasil
2021
|
| Assuntos: | |
| Acesso em linha: |
http://repositorio.ifam.edu.br/jspui/handle/4321/518 |
| Resumo: |
|---|
|
This paper presents the analysis, sizing and installation of a heat exchanger in a threepass flamotubular boiler that operates with natural gas. The boiler outlet gases at 200ºC were
used to preheat the available boiler feed water to 30ºC. The method adopted for the heat
exchanger sizing was the effectiveness Number of Transfer Units (NUT). After installation of
the heat exchanger, also called economizer, the feed water enters the boiler at 75 ° C. This
temperature gain has made it possible to soften steam generation interruptions as replacement
water enters the boiler, keeping steam working pressure more stable and improving the
condition of steam generation. This made the equipment more efficient, reducing the
production costs of the Styrofoam product. The economist's employment generated a monthly
savings of 20% in natural gas consumption, or around 1620 Nm³ per month. |