It is that fundamentalists who support his analysis of the value of the dollar in a wide number of variables are not in agreement. Numerous indicators that throw hand to assess the value of the American currency, reaching different conclusions which generates a bit of bewilderment. Cannot choose one specifically because they all have weaknesses. What determines the value of the dollar? In a simple and concrete response, the strength of the American economy is what determines its value. Going to the detail, we should see how the main economic variables such as trade balance and current account, fiscal spending and the public deficit, interest rates, inflation and the growth of the economy behave both real and potential. While the model that uses the OECD to assess the value which should be the currency, said that the dollar is undervalued against the euro, other estimates show otherwise. Most of the indicators that economists use point out that the dollar is overvalued against the yuan, but some show that it is too cheap against the euro.
Even the rate of the dollar of Intercontinental Exchange, which measures its performance against a basket of six major currencies of the world dominated by the euro, shows a weaker dollar to future expectations and decreased its minimum of the past 14 months and not far from its historic low of 71,33 75,48 last week, corresponding to April 2008. Looking at some of the main economic variables in the U.S. we have rates of interest at historic lows, a fiscal deficit that has been historic record, a deficit in current account difficult to reverse and an economy that will remain weak more time than desired. From the point of view of economic variables, there are too many arguments that the dollar can be sustained to retrieve value. At its worst, Governments and investors give it back to the dollar.
Some of the most important pieces of any of the boilers that are on the market are those which are known with the name of exchangers. These elements that enjoy priority in them because they are responsible for carrying out the transfer of heat between two media that are in contact or well that are separated by any barrier in question. When we talk about heat exchangers, first thing that should be stressed is that there are several types clearly differentiated according to their characteristics and components. In particular, we we focus on three of the most relevant classes. On the one hand are those who receive the name of compact. These are defined because that pursue is to achieve a large surface of transfer of heat depending on the unit of volume. In them the two fluids move in directions orthogonal calls among themselves and this movement in turn can be classified in mixed and non-mixed. On the basis of all this must be stressed that this type of exchangers is found, for example, in cars radiator.
On the other hand side, would be known as of double tube. A name given since they are formed by two concentric tubes which have very different diameters, making a fluid to circulate through the smaller size and the other flowed through the space between both parts. This circumstance gives rise to also have two kinds of configurations based on the aforementioned fluid flow: the parallel, which is that takes place when both circulate in the same direction and enter through the same end; and the backflow preventer that is when they start at different ends and also circulate in opposite directions. And thirdly we should talk about Shell and tube exchangers. These are those most frequently used in the industrial field and acquired their name because they are shaped by a broad set of tubes which, in turn, found inside a helmet. In this case, the proverbial heat transfer occurs by the movement of a fluid through tubes and other fluid so is the helmet. Heat exchangers, electric boilers and boilers of steam