Thermodynamics

Thermodynamics States About Energy Conversion Thermodynamics is the branch of science that embodies the principles of energy transformation in macroscopic systems. The general restrictions which experience has shown to apply to all such transformations are known as the laws of thermodynamics. These laws are primitive; they cannot be derived from anything more basic. The first law of thermodynamics states that energy is conserved; that, although it can be altered in form and transferred from one place to another, the total quantity remains constant. Thus, the first law of thermodynamics depends on the concept of energy; but, conversely, energy is an essential thermodynamic function because it allows the first law to be formulated. This coupling is characteristic of the primitive concepts of thermodynamics. The words system and surroundings are similarly coupled. A system is taken to be any object, any quantity of matter, any region, and so on, selected for study and set apart (men

How to measure Wind Flow

To measure wind flow in the air we must use a special tool that can record the flow of the wind automatically, because it will be difficult if we want take the data every time we want. The equipment to measure wind flow is called as Anemometer.

Anemometer is an instrument that is used in meteorology to measure the velocity of the wind. It is used in the weather station and the name for this device is derived from the Greek word "anemos" which means Wind. There are various of anemometers that have been developed from around the fifteenth century. Basically there are two type of anemometer, the first type that measure the velocity of the wind and the second type is measure the wind pressure. Both of this anemometer will take the data of wind speed.

From the physical form and base on their work the type of this anemometer can be divided into five type Anemometer:

  1. Cup Anemometer
  2. Windmill Anemometer
  3. Hot wire Anemometer
  4. Laser Dopper Anemometer
  5. Sonic Anemometer