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Geothermal Energy, Heating, And Cooling Essay

953 words - 4 pages

Geothermal Energy, Heating, and Cooling
In order to full under stand geothermal heating and cooling you first need to understand what geothermal energy is. Geothermal energy is a form of energy conversion that is provided by nature and that can be used by humans to cook, bath, heating and generate electric power. The energy is created by capturing and harnessing the heat energy. This heat is formed underground and is created by the radioactive decay of certain elements such as potassium, thorium, and uranium in Earth. One way to produce energy from geothermal heat is to use the heat to create steam to drive turbines that spin an electric generator, this method and others like it can create ...view middle of the document...

Mechanical based heat pumps systems all have some common components: a compresser, a condenser, and an evaporator. The whole system is made of pipes that circulate a fluid that allows the transfer of heat. The evaporator is what transfer heat from the air in the room to the fluid inside of the system of pipes. The condenser is what takes the heat from the fluid and transfers it to the air outside. The compressor is what does all the work to create the necessary entropy for this heat transfer to take place. The work done by the compressor creates entropy that mix at the nature flow is what make it possible transfer for from cold to heat, without this work done on the fluid this transfer could not happen because it break the second law of thermodynamics. The law stats that “Entropy of a thermally isolated system never decreases,” and the flow from cold to hot would increase the entropy. The work done to the fluid by the compressor is down with consumption of electricity. The larger the difference in temperature between inside and outside air the more work that will need to be done by the compressor allow the flow of heat to go from cold to hot.
A geothermal heat pump takes the condenser that would be outside normally be on the side of a house used to transfers the heat from the fluid to the outside air. And would replaced it with a heat exchange like the one is in the example given in Figure 3. This heat exchange is a series of looped pipes buried in the ground. Since the pipe is under ground and we now know the pipe should be buried at a depth between twenty-six to five hundred feet below the Earth surface where the temperature is averages in...

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