Glossary of words for the third week of the heat transfer module
Conduction shape factor
noun
is the distribution of radiation emitted by each surface and reaching the others
Example: The conduction form factors are only applicable when the heat transfer between the two surfaces is by conduction.
es: Factor de forma de conducción
Convection resistance
noun
When a fluid comes into contact with a solid surface at a different temperature, the resulting process of thermal energy exchange is called convection heat transfer.
Example: There are two types of convection processes: free or natural convection and forced convection.
es: Resistencia de convección
Critical radius of insulation
noun
It depends on the thermal conductivity of the insulation k and the external convection heat transfer coefficient h.
Example: This trend continues until the outer radius of the insulation corresponds to the critical radius, where the heat rate reaches its maximum.
es: Radio crítico de aislamiento
Cylinder conduction resistance
noun
If the temperatures of the fluids, inside and outside the cylinder, remain constant, then the heat transfer through that tube is stationary.
Example: If the temperatures of the fluids, inside and outside the cylinder, remain constant, then the heat transfer through that tube is stationary.
es: Resistencia de conducción del cilindro
Efficiency
noun
Efficiency is the ability to achieve that effect in question with the least possible resources or in the shortest possible time.
Example: efficiency is improved by using better quality materials
es: Eficiencia
Fin effectiveness
noun
Fin temperature effectiveness or fin efficiency is defined as the ratio of the actual heat transfer rate through the fin base divided by the maximum possible heat transfer rate through the base fin, which can be obtained if the entire fin is at base temperature.
Example: The performance of the fins is judged on the basis of the enhancement in heat transfer relative to the no-fin case and is expressed in terms of the fin effectiveness
es: Eficacia de la aleta
Fin efficiency
noun
relationship between the heat actually transferred to the heat transferred by a real fin
Example: The performance of the fins is judged on the basis of improvement
in heat transfer relative to the finless case
es: eficiencia de las aletas
Interface resistance
noun
Decreased heat flow caused by imperfect contact between two materials at an interface.
Example: We discuss the effect on the different physical properties that interface resistance has in artificially grown materials in the form of heterostructures when their dimensions are on the nanometer scale.
es: Resistencia de interfaz
Plane wall conduction resistance
noun
Heat flows in a direction perpendicular to the surface. If the thermal conductivity is uniform
Example: Consider a flat, heat-transferring wall as stationary and one-dimensional.
es: Resistencia a la conducción de la pared plana
Radiation resistance
noun
By radiation, energy is transported in the form of electromagnetic waves that propagate at the speed of light. The electromagnetic radiation considered here is thermal radiation.
Example: Real bodies have resistance to thermal radiation in the same way that they absorb and transmit it
Sphere conduction resistance
noun
Now consider the one-dimensional steady-state flow of heat through a cylindrical or spherical layer that is exposed to convection on both sides into fluids that are at temperatures T1 and T2.
Example: radius and thermal conductivity define spherical resistance
es: Resistencia a la conducción de la esfera
Surfaces
noun
the outside part or uppermost layer of something (often used when describing its texture, form, or extent)
Example: Ciertos problemas multidimensionales de transferencia de calor involucran dos
superficies mantenidas a temperaturas constantes
es: Superficies
Thermal contact conductance
noun
Thermal conductance is a measure of heat transfer through materials, made up of one or more layers, and under laboratory conditions. In this case, the amount of heat transferred through the material in a unit time and surface is measured, for a specified thickness (not necessarily unit).
Example: Thermal conductance It is calculated as the thermal conductivity of the material divided by the thickness of the layer
es: Conductancia de contacto térmico
Thermal contact resistance
noun
is the inverse thermal property to the contact conductivity
Example: thermal contact resistance is highly dependent on surface roughness. The pressure that holds the two surfaces together also influences the contact resistance
es: Resistencia al contacto térmico
Total thermal resistance
noun
Thermal resistance is a heat property and a measurement of a temperature difference by which an object or material resists a heat flow. Thermal resistance is the reciprocal of thermal conductance.
Example: Thermal energy represents the total internal energy of an object: the sum of its potential and kinetic molecular energies
