Basic Energy Principles

As a designer there are many things one takes into consideration and one of the main things is heat. Heat will revolve around a building all the time so one has to design heating and cooling strategies to understand the principles of energy transfers. There are several terms that undergo the phases of the transferring, they are, Conduction, convection, radiation, and change in phase, latent and sensible.

Sensible– When heat is dry, in other words temperature is a measure of average intensity of molecular vibration in the substance but this also depends on the  mass and the amount of matter in an object.

Latent- This is when heat is released or absorbed by a substance when the substance undergoes some type of change for example when ice melts into water or when water evaporates.

Conduction-  In simple words id f two objects of different temperature are in direct physical contact the heat will be transferred in conduction for example if a person starts rubbing their hands together their hands will produce heat and get hotter.

Convection- This form of heat transfer deals with liquids and gasses, when they absorb and contract as they loose heat by conduction. When the gases and and liquids expand they become less dense and less potential to gravitational pulls.

Radiation- This is the movement of heat through a vacuum or air . All objects above absolute zero emit and electromagnetic energy by means radiation. The radiation could be transmitted through radiation.

Another important word to heat transfer is Emittance, is is when an object like glass, to radiate electromagnetic energy is affected by its emittance. Heat transfers also depends on the location there are areas where heat is more intense than other. then you have cold and very cold areas,hot and humid and hot dry and mixed dry. Then this brings the topic of the sun and sun rotation and how it travels. There are three different equinox the summer solstice the spring equinox and the winter solstice.  So this concludes the heat transfers and what one should consider when designing an efficient building.

 

 

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