User:Aclifton6

Thermal Energy

This topics focuses on the energy and work of a system. Energy transfer is one of the fundamental principals of Physics, thermal energy falls under this category. This type of energy falls under the abbreviation of Q which stands for the heat that is expelled from an object once a reaction or kinetic energy is transferred; as well as the movement of tiny particles within the object. There are three forms of Thermal Energy: Conduction, Convection and Radiation. Conduction is the transfer of heat energy though collisions between adjacent molecules. Convection is the transfer of heat through motion of a fluid such as air or water; when the fluid is heated it is caused to move away from the source of heat, therefore carrying the heat energy with it. Radiation is the transfer of heat through waves or particles through a material or space.

Definitions

E(total) = delta K + delta U + Rest Energy [1]

Units

All types of energy are expressed in Joules. Thermal Energy(Heat) is no different from the other forms of energy with the expression of units; therefore Thermal Energy(Heat) is also expressed in Joules as well.

A Computational Model

You are able to view the transfer of heat through the link provided.[2] This link gives credit to the author, Andi Lucas; it is a video I found interesting and entertaining, however I did not create the video.

First Law

Heat Energy transfer falls under the Law of Thermodynamics. This is defined as the internal energy (E) which is equal to the change of heat transfer (Q) into a system and work (W) done by the system. When heat is removed from a system it results with a negative answer, and when heat is added to a system allows for a positive transfer of heat and thus a positive answer. Heat can not be stored like Potential energy, due to the process that is needed; thus resulting in Kinetic energy. Due to this many different arrangements of the system are able to exist.

Specific Heat

With liquids and solids that are changing temperature, there is a specific heat associated with a temperature change. This means that the specific heat is variable upon the mass of an object, the change in time as well as the material that is absorbing or expelling heat.

Specific Heat Formulas

Q= m*c *(change in time)

Within this equation heat is found by mass* "C" which is a constant multiplied by the change in time.

Connectedness

How is this topic connected to something that you are interested in?

           This topic is interesting to me because thermal heat was the most enjoyed topic that was studied all semester.

How is it connected to your major?

            My major is Building Construction and this is related because we calculate the change in heat within expansion joints for concrete.

Is there an interesting industrial application?

            The application applied relates to all materials used in construction with expansion and contraction.

History

The idea of thermodynamics was idealized during the late 17th century, but was truly recognized during the 18th and 19th centuries. Jean Baptiste Biot (1774-1862) worked on the analysis of heat conduction, however unsuccessful. Then Baron Jean Baptiste Joseph Fourier (1768-1830) continued the work of Boit and completed his(Fourier's) masterpiece which was known as the mathematical theory of heat conduction which was stated within Theorie Analytique de la Chaleur (1822). "Around 1850 Rudolf Clausius and William Thomson (Kelvin) stated both the First Law - that total energy is conserved - and the Second Law of Thermodynamics. The Second Law was originally formulated in terms of the fact that heat does not spontaneously flow from a colder body to a hotter." The terminology, "thermodynamics", was not created until the year 1854, during this time a British mathematician and physicist, William Thomson (Lord Kelvin) created the terminology thermo-dynamics when he wrote a paper upon On the Dynamical Theory of Heat.

References

Georgia Tech Physics Department Example Page http://physics.bu.edu/~duffy/py105/notes/Heattransfer.html https://en.wikipedia.org/wiki/Heat_transfer http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/heatra.html https://s-media-cache-ak0.pinimg.com/736x/2a/5e/d6/2a5ed64011dd8c93ecf6bdccca3ba537.jpg https://www.youtube.com/watch?v=pnVVJfUMkAo