Consider two bodies at different temperatures in thermal contact Then internal or thermal energy from the hot body will flow to the cold body The energy
It is the temperature difference between the two neighboring objects that causes this heat transfer The heat transfer continues until the two objects
One thing drives heat transfers it is a difference in temperature CONDUCTION – this form of heat transfer requires that two objects be in contact Thermal
When an object or fluid, is at a different temperature than its surroundings or another body, transfer of thermal energy is also known as heat transfer
Fig 2: Thermal resistance network The rate of heat transfer between two surfaces is equal to the temperature difference divided by the total thermal
Recall that when two substances at different temperatures are in contact with each other, the faster-moving particles of the warmer object collide with slower-
Heat can transfer between two mediums by conduction, convection and radiation whenever there is a temperature difference Recall the first law of
If two objects at different temperatures are brought in contact with each other, energy is transferred from the hotter to the colder object until equilibrium is
increasing the internal energy through heat transfer (e g (heating a liquid with the discussion to heat transfer (W=0) dQ scales with the mass of an object since it takes twice as Consider two bodies masses at different temperatures T C
HT-2 Table of Tables Table 2 1: Thermal conductivity at room temperature for some Table 9 1: Total emittances for different surfaces [from: A Heat Transfer Textbook Figure 6 1: Temperature variation in an object cooled by a flowing fluid
translate (move from one location to another) and even rotate (revolve about The water's temperature, as reflected by the thermometer's reading, is a measure of between the two neighboring objects that causes this heat transfer The heat