Encontro de Energia no Meio Rural
Agrener

Resumo

BALDASSIN JR, Ricardo, CORTEZ, Luís Augusto Barbosa, JORDAN, Rodrigo Aparecido et al. Bombas de calor em propriedades leiteiras. In Anais do 6. Encontro de Energia no Meio Rural, 2006, Campinas (SP, Brasil) [online]. 2006 [citado 18 Abril 2024]. Disponível em: <http://www.proceedings.scielo.br/scielo.php?script=sci_arttext&pid=MSC0000000022006000100030&lng=pt&nrm=iso> .

Milk is a prominence product of Brazilian agriculture, with about 2/3 of the rural properties dedicated to the milkmaid cattle breeding, the second bigger flock of the world and a representative participation in the national economy. In spite of its size, the sector still suffers of low productivity, high costs, the instability of prices and tecnological delay, which resulted in many producers have abandoned its activities in consequence of this new competitive scenario. Nowadays, subjects as, the rational use of energy and intensive application of technology have been hardly discussed, and indicated, as important aspects to obtain high productivity gains. In this work, it is presented an evaluation of the use of energy in a milkmaid which processes cooled raw milk in Morungaba city, São Paulo state, Brazil, with a 1.000 liters daily production, making use of the three main processes (cooling, milking system and water heating). Aiming at to promote the rational use of energy, it was realized in this property, an adequacy in the tank milk cooler to utilize the condensation heat, of the refrigeration system, to heat cleanness water (operation according to a heat pump). Through this practical, it was objectified the exclusion of the use of the electric resistance in the heating process for term-accumulation (300 liters/day), promoting consumption reduction and rational use of energy. For the property conditions, the real reduction in the electric energy consumption was 13%, with 3,0 years of time of regain investment.

Palavras-chave : Leite; Energia; Refrigeração; Aquecimento; Bomba de Calor.