Desenvolvimento de um sistema alternativo de trocador de calor para construções agroindustriais

Abstract

The conditions of climatization required in the interior of the agroindustrial constructions and in other environments, as well as the search for the thermal comfort of productive activities with a minimum cost in stuff, energy and equipment presents the alternative devices development need of environments cooling with those characteristics. The present study aimed at the assembly and evaluation of operation of an alternative device of a conductor of heat for cooling of a random environment, as well as to evaluate the economy of the consumption of water and energy. That experiment was built and carried out in Universidade Tecnológica Federal do Paraná UTFPR, in Medianeira, PR, in a place adapted for that. The system is composed by a stimulated water circulation structure by a hydraulic pump of low pressure and a net of PVC tubes which makes a drapery of water, a water conductor gutter and a reservoir. It was utilized temperature measurement, speed of air and relative humidity of air instruments, which were installed in strategic points enabling the data collecting for the subsequent analysis of the experiment operation. Associated to a forced ventilation system, the device presented, in three complete phases of tests, results that indicated that the temperature of the environment can be limited to 3 to 4ºC and with addition of 10 to 12% of relative humidity. The equipment showed construction and operation versatility, presenting good capacity of energy saving and of water consumption. The device has a functional simplified aspect; its cost is reasonable and offers no aspects that can cause the environment alteration.