Browsing by Author "Aguilar, Orlando"

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Impact on energy saving and thermal comfort through the application of expanded polyurethane thermal insulation in Panama
(LACCEI Inc., 2020-07) Aguilar, Orlando; Mendoza, José; Mogollon, Luis; Aguilar Gallardo, Orlando; Henriquez, Felix
Air conditioning systems are used every day on a global scale in a search for comfort, especially in places with very hot and humid climates. Panama classifies as one of those, therefore, the use of air conditioning systems attributes to a big part of nationwide electricity consumption. As the country grows, more of these systems are used daily in residential and labor sectors, and this takes a toll on the nationwide consumption of electricity. Part of the country’s strategy is increasing the energy generation capabilities, but the rational and efficient use of the energy that’s already available could substantially help the energy situation in the country. This research focuses on evaluating the viability of the use of polyurethane based thermal insulation in Panama, with and without the use of air conditioning systems, to evaluate the impact of this technology in the human comfort and in the electricity bill payed for consumers in Panama. Various tests were conducted to evaluate different aspects such as decrease in consumption and temperature gain inside experimental houses. Test results indicate a 44% decrease in electricity consumption due to the use of air conditioning systems under the installation of polyurethane insulation on ceiling and walls. This directly translates into a reduction of the cost of electric bills in homes and offices and may positively impact on the national electric energy demand.
Influence of the addition of 2%, 3% and 5% of fly ash on the physical-mechanical properties of cement mortar
(LACCEI Inc., 2021-07) Angulo, Viviana; Aguilar, Orlando
The objective of this work was to evaluate the influence of the addition of coal fly ash, a residue from the manufacture of clay brick, in the manufacture of cement mortar; in order to reuse construction waste in the creation of new materials, reducing the cost of raw materials and contributing to the environment. The standard cement mortar designed for a resistance of 125 Kg / cm2 was compared with additions of 2%, 3% and 5% of fly ash, in axial compression, absorption and capillarity tests. The mortars with addition of 2% and 3% of fly ash reached the designed strength but did not exceed the standard mortar, with strengths of 129.04 Kg / cm2 and 128.33 Kg / cm2 respectively, while the addition of 5% reached 123.05 Kg / cm2. Capillarity with the addition of 2% decreases 29.59% in relation to the standard mortar, at 3% it increases 1.52% and at 5% it decreases 2.49%; the absorption in the 2% addition varies with the standard by 0.29%, in the other additions it increases. It is shown that the fly ash works as an artificial pozzolana, favoring the physical-mechanical properties of the hydraulic cement mortar, being viable its use in small additions.
Resistance to bending of solid beams and laminated beams for two types of woods, in the city of Cajamarca
(LACCEI Inc., 2021-07) Guarniz, Christian; Aguilar, Orlando
This research evaluated the flexural strength of solid beams and laminated beams for two types of wood, in the city of Cajamarca, due to the need to know the capacity of these two types of wood: Eucalyptus and Pine; since both types of wood are easily available in the city of Cajamarca, as well as being inexpensive in the local market. The tests were carried out in the laboratories of the Faculty of Engineering of the Universidad Privada del Norte, Cajamarca headquarters. Protocols were used for the execution of tests, whose results were processed in Excel spreadsheets, then they were analyzed and interpreted for each type of specimen: solid beams and laminated beams (wooden sheets joined together, with synthetic glue based on polyacetate vinyl). To obtain the flexural strength of the wooden beams, a maximum load was applied on the universal testing machine, considering the dimensions and the distance of the support. In the execution of the investigation, we first proceeded with the recognition of the material, its cuts and the production of the solid and laminated wooden beams, considering the dimensions of the wooden beams, based on the tests, to determine up to how much load can stand. Subsequently, the information obtained was processed and it was determined that the performance of the Eucalyptus solid beams had better performance than the Eucalyptus laminated beams, in the case of the Pine solid beams and the Pine laminated beams, these had similar behavior.