Determinación de la eficiencia térmica del poliuretano utilizado como aislante térmico, en la empresa ESPROM-PUR Ambato.

Abstract

Determining the thermal efficiency of the polyurethane used as thermal insulation in the company ESPROM PUR CIA was performed. LTDA. Located in the city of Ambato. For the development of research, began building four calorimeters laboratory scale, with the most frequent isolated refrigerator market materials which are expanded polystyrene, glass wool and polyurethane, the room calorimeter did not have insulation in order to compare final data; a digital tester also constructed with a temperature sensor LM-35 and a temperature sensor PT-100. We proceeded to perform the procedures taking as reference fluid water known to its boiling point, it was finally collected and tabulated the data shown by the digital tester calorimeters. To determine the efficiency of the relevant calculations which reflected that the polyurethane is the best thermal insulator resulting in a 65.76% efficiency, which is the highest percentage compared to other insulation, also according to Fourier's Law has held been able to determine that the polyurethane is the lower heat insulator has missed during testing in the calorimeters be 17.30 W / m heat transmitted during the measurement. According to the results we recommend using sprayed polyurethane foam to insulate refrigerated motor vehicles and public transport, which must have insulation that is flame retardant according to regulation 043 RTE INEN: 2010.