Ingeniería Mecánica

Permanent URI for this collectionhttp://repositorio.uta.edu.ec/handle/123456789/900

Browse

Filters

20211

Settings

Author: search.filters.author.Cunalata Guachamboza, Oscar VinicioSubject: search.filters.subject.TRANSFERENCIA DE CALOR

Search Results

Now showing 1 - 1 of 1
  • No Thumbnail Available
    Item
    Diseño y construcción de un prototipo de recuperador de calor por placas para calentamiento de aire para el Laboratorio de Energía de la Carrera de Ingeniería Mecánica
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2021-01) Cunalata Guachamboza, Oscar Vinicio; Cabrera Anda, Santiago Paúl
    This project was developed in order to recover the residual heat of the combustion gases, taking advantage of it for air heating. Information collection was done by reviewing functional characteristics, material types, and board configurations. Subsequently it began with the design of the ducts so that the flow circulates without complications, a detachable exchanger core was built allowing easy cleaning. The square configuration for airflow and trapezoidal for the flow of exhaust gases by way of forming ducts was determined on the plates, all in aluminium. For the supply of fresh air a low pressure centrifugal fan-extractor was chosen and to maintain the temperature glass mineral wool was placed, all these materials were selected according to criteria such as: cost, availability, thermal conductivity and flow rates. By means of calculations of forced convection in internal flow, the temperatures, speeds and pressure drop of the flows were determined, for validation a finite element analysis software was used to determine the increase in air temperature, being the inlet temperature of the exhaust flow, inlet temperature and fresh air flow rate of 105 degrees Celsius , 20 degrees Celsius and 20 meters per second, respectively; reaching an increase of 11.3 degrees Celsius and an output speed of 13 meters per second in the airflow. Experimental tests showed an air outlet temperature of 58 degrees Celsius with the following parameters, exhaust gas temperature at 90 degrees Celsius and 0.01 cubic meters per second, 7 meters per second and 20 degrees Celsius from fresh air. In addition, the crossflowing heat exchanger handles flow rates between: 0.01 to 0.05 cubic meters per second and temperatures between: 20 to 105 degrees Celsius.