Encontro de Energia no Meio Rural
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Resumo

PERISSINOTO, Maurício, MOURA, Daniella Jorge de, MATARAZZO, Soraia Vanessa et al. Evaluation of energy efficiency of climatization system in dairy cattle free-stall. In Anais do 6. Encontro de Energia no Meio Rural, 2006, Campinas (SP, Brasil) [online]. 2006 [citado 25 Abril 2024]. Disponível em: <http://www.proceedings.scielo.br/scielo.php?script=sci_arttext&pid=MSC0000000022006000100023&lng=pt&nrm=iso> .

The objective of this research was the evaluation of the economical efficiency, in relation to water and energy expenses, of two different evaporative cooling systems, misting and sprinkler, associated with forced ventilation. The study was carried out in a commercial dairy cattle farm located in a small city of Sao Paulo State. The experimental period was twenty-eight consecutive days of November 2003. For the economical analysis of each system of climatization the cost with electrical energy and water expended in each system was considered and also the feeding consumption. The sprinkling cooling system presented a greater consumption of water and energy than the misting system. Even those treatments promoting similar feed intake (the difference was 3.0 kg DM.animal^-1.month^-1), the sprinkling system associated to forced ventilation led to an increase (18.0 liters.animal^-1.month^-1) of 3% in milk production. As consequence, it was observed an increase of 5,8% in total month profit in relation to misting system.

Palavras-chave : sprinkler; fogging; thermal comfort.