Thermosyphons :: physics

Tasked with the quest to economically and efficiently extend civilization into the Northern regions, the construction industry has been hindered by the presence of perennially frozen ground. The thermosyphon is a gismo that facilitates the harmonious meat of structure and ice. This paper will serve as a tutorial on thermosyphons, and present an exploration into the physical concepts that al clinical depression their operation. The physical concepts and phenomenon that alter the operation of thermosyphons can at times be complex-but dont be scargond. This tutorial will start with the most rudimentary description of thermosyphons, and proceed from there to deliver more in depth examinations in a step by step process. Lets sop up right down to business.The steps in thermosyphon operation are measuring 1-Heat flows into the thermosyphon, STEP 2-Heat flows through the thermosyphon tube, and STEP 3-Heat is released into the air.Simply stated, a thermosyphon is a device which moves h eat from one place to another. There are different types of thermosyphons which are used for different applications, but for the purposes of this primer we will concentrate on thermosyphons used by the construction industry to stabilize frozen ground. For example, care a road built over permafrost.. In this situation it is worthy to keep the ground from thawing, otherwise the road embankment will be destroyed. A thermosyphon collects heat from the frozen ground. This collected heat is brought to the top of the thermosyphon and the cooling fins, where it is released into the atmosphere. In this way, the ground remains frozen.Now, the thought of frozen soil warming the atmosphere may be hard to grasp. This brings us to an important point about(predicate) the thermosyphon- they only work when the ambient air temperature is below the temperature of the soil (less than 31 degrees Farenheight). With this in mind, we can consider thermosyphons from a different perspective a thermosypho n increases the exposure of sub-surface soil to freezing temperatures. Another thought, although not totally line up from a physical standpoint, is that the thermosyphon brings cold into the soil.Lets examine the thermodynamic process by which a thermosyphon operates. This process is outlined below in a step by step chronology.Step 1-There is an accumulation of the working silver-tongued in the bottom of the thermosyphon. The most important factor that governs the plectrum of a working fluid is that it must have an extremely low boiling point. Permafrost soil is typically at a temperature of 31F and consequently the fluid boiling point should be less than 31F.