Browsing by Author "Jara Cobos, Nelson Gustavo"

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Impacts on the consumption of electric power by the use of efficient refrigerators - Ecuador case
(2017) Jara Cobos, Nelson Gustavo; Reinoso Avecillas, Fran Zhovani; Isaza Roldán, César; Espinoza Abad, Juan Leonardo
This article presents an analysis of the impacts that the Renova Refrigerator program will have, on electricity consumption in Ecuador; the main objective of this program is to replace refrigerators that are more than 10 years old with efficient class “A” domestic refrigerators. The development and implementation of the program reduces energy consumption by 8%, motivates people to use electric energy efficiently and encourages the national industry to use new technologies, which increases productivity and domestic product consumption. Additionally, in compliance with the current Ecuadorian and international regulations, the variation in electricity consumption of a domestic refrigerator is evaluated when it runs at the different temperatures determined by the thermal floors, which are very distinct in the Coast, Sierra and eastern regions of Ecuador.
Instrumentación de un refrigerador doméstico para el análisis del comportamiento de las variables de presión y temperatura de operación
(2017) Reinoso, Fran
Abstract: Due to the high consumption of electric energy that represent the use of a domestic refrigerator in homes, due mainly to one of its main parts such as the compressor, it was established the need to analyze the thermodynamic behavior in order to know its operating conditions, so in this article presents mainly the results of the temperature behavior of the freezing compartment and the pressure at the compressor outlet of a domestic refrigeration system, obtained on the basis of the minutal measurement of said variables during a period of operation of 6 hours. This has been achieved through the instrumentation of a 234 liter total volume refrigerator / freezer that works with R134a refrigerant. In addition, the influence of the on / off condition of the compressor on the measured temperature and pressure variables has been analyzed. It has been verified that once the compressor is switched on, the freezer temperature drops to -20.7 ° C in 90 minutes, at which temperature the compressor switches off. The average time for restarting the compressor is 7 min. As for the pressure values at the output of the compressor, a variation between 0.9 and 14.67 bar is observed, which are influenced by the on / off state of the compressor. Concluding that the energy consumption of the refrigerator is a direct function of the operating temperature ranges, thermal load and the frequency of opening and closing refrigerator doors.