Convection is one of three forms of heat transfer and is characterized in that occursthrough a fluid (air and water) that transports heat between areas with different temperatures. Convection occurs only through fluid materials. These when heated,increase in volume and, therefore, their density decreases and displacing the fluidamount which is at the top and is at a lower temperature. What is called convection itself,is the transport of heat by means of ascending and descending currents of fluid, eg by heating water in a pan, which is in contact with the bottom of the pan is moved above,while the water is on the surface decreases, the place he left the hot, this is calledconvection
hola amigos mi nombre es Jose guadalupe galvan murrillo y en este blog publicaré toda mi evidencia sobre el II semestre como técnico en refrigeración y climatización que estoy estudiando en el cet-mar 14 de puerto peñasco sonora con apoyo del maestro Martín Alfredo Jiménez becerra, espero que les guste y gracias por visitarme
miércoles, 23 de mayo de 2012
CONVECCION-CONVECTION
La
convección es una de las tres formas de transferencia de calor y se caracteriza
porque se produce por intermedio de un fluido (aire y agua) que transporta el
calor entre zonas con diferentes temperaturas. La convección se produce
únicamente por medio de materiales fluidos. Estos al calentarse, aumentan de
volumen y, por lo tanto, su densidad disminuye y ascienden desplazando el fluido
que se encuentra en la parte superior y que está a menor temperatura. Lo que se
llama convección en sí, es el transporte de calor por medio de las corrientes
ascendente y descendente del fluido, por ejemplo: al calentar agua en una
cacerola, la que esta en contacto con la parte de abajo de la cacerola se mueve
hacia arriba, mientras que el agua que esta en la superficie, desciende,
ocupando el lugar que dejo la caliente, a esto se le llama
convección
Convection is one of three forms of heat transfer and is characterized in that occursthrough a fluid (air and water) that transports heat between areas with different temperatures. Convection occurs only through fluid materials. These when heated,increase in volume and, therefore, their density decreases and displacing the fluidamount which is at the top and is at a lower temperature. What is called convection itself,is the transport of heat by means of ascending and descending currents of fluid, eg by heating water in a pan, which is in contact with the bottom of the pan is moved above,while the water is on the surface decreases, the place he left the hot, this is calledconvection
Convection is one of three forms of heat transfer and is characterized in that occursthrough a fluid (air and water) that transports heat between areas with different temperatures. Convection occurs only through fluid materials. These when heated,increase in volume and, therefore, their density decreases and displacing the fluidamount which is at the top and is at a lower temperature. What is called convection itself,is the transport of heat by means of ascending and descending currents of fluid, eg by heating water in a pan, which is in contact with the bottom of the pan is moved above,while the water is on the surface decreases, the place he left the hot, this is calledconvection
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