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A acirrada competicao entre as empresas vem forcando-as a buscar fortemente aperfeicoar seus recursos, seja reduzindo custos, seja otimizando os processos. Sendo o homem seu principal ativo e responsavel direto seu resultado, criar condicoes propicias para que este produza e fundamental. Neste contexto o projeto de refrigeracao do ambiente industrial vem de encontro a essa necessidade. O projeto visa a reduzir as temperaturas extremas do verao, utilizando o telhado de aco galvanizado como um trocador de calor, pela aspersao e evaporacao de agua, que impede a transferencia de calor produzido pela radiacao solar e calor produzido internamente em um Galpao de processo industrial superaqueca o ambiente interno, e crie um ambiente insalubre e desconfortavel aos trabalhadores. O projeto aproveita a pluviometria da regiao, com a captacao, tratamento e armazenamento de agua da chuva, sistema de bombeamento otimizado, encanamentos e aspersores de irrigacao para a distribuicao homogenea da agua na area de telhado para a realizacao da troca termica. Palavras-Chave: Conforto Termico. Stress Termico. Bombas Centrifugas. Dimensionamento de Tubulacoes. ABSTRACT The fierce competition between companies has forced them to strongly improve its resources, either by reducing costs, or optimizing processes. Since the man is the main asset and directly responsible for its outcome, create propitious conditions for him to produce is key. In this context,  the industrial environment cooling project come to meet that need. The project aims to reduce extreme summer temperatures by using galvanized steel roof as a heat exchanger by spraying and evaporating water which prevents the transfer of heat produced by solar radiation and internal factory heat, preventing an unhealthy and uncomfortable environment for workers. The project takes advantage of the rainfall in the region, collecting, treating, storing rainwater, optimized pumping system, pipelines and irrigation sprinklers for the homogeneous distribution of water in the roof area for the realization of thermal exchange. Keywords: Thermal Comfort; Thermal Stress; Centrifugal pumps; Pipes Sizing.

DIMENSIONAMENTO DE UM SISTEMA DE REFRIGERAÇÃO DE AMBIENTE INDUSTRIAL POR ASPERSÃO DE ÁGUA NO TELHADO