isobaric process is a kind of izoprotsessa, which is a thermodynamic.During his mass of substance and one of its parameters (pressure, temperature, volume) remain unchanged.For isobaric process is a constant pressure.
isobaric process and the law of Gay-Lussac
In 1802, through a series of experiments, the French scientist Joseph Louis Gay-Lussac brought regularity that at constant pressure, the ratio of gas to the temperature of a given mass of the substance to be a constant value.In other words, the volume of gas is directly proportional to its temperature at a constant pressure.In Russian literature, the law of Gay-Lussac has called the law of volumes, and in English - the law of Charles.
formula that gave the French physicist under isobaric process is suitable for absolutely any gas and vapor-liquid when passed the boiling point.
Isobar
To display these processes in graphical form using the isobar, which is a straight line in a two-dimensional coordinate system.There are two axes, one of which - the gas volume, while the second represents the pressure.An increase of one of the parameters (temperature or volume) increases proportionally and the second indicator, which provides a direct line as a graph.
example of isobaric process in daily life is to heat the water in the kettle on the stove, when the atmospheric pressure is constant.
Isobar may exit point at the coordinate axes.
work at isobaric process gas
Due to the fact that the gas particles are in constant motion, gas, respectively, are constantly putting pressure on the wall of the vessel in which it was concluded.By increasing the temperature of the gas motion becomes faster and therefore stronger the force with which the particles begin to bombard the walls of the vessel.If the temperature starts to drop, in this case, the process is reversed.If one of the walls of the vessel is movable, then the corresponding increase in temperature due, - when the force of pressure on the inside wall of the gas container is higher than the resistance force, - a wall starts to move.
The school children to explain this phenomenon by the example of heating with fire glass bulb filled with water and capped when the latter at higher temperatures flies out.This teacher always says that the pressure of the atmosphere is constant.
In mechanics considers the motion of the body in relation to space, and thermodynamics studies the movement of parts of a body relative to each other, the speed of the body will remain zero.When we talk about the work in thermodynamics, first of all, we mean the change in internal energy whereas a mechanical we are dealing with a change in kinetic energy.Working gas in the isobaric process can be determined by the formula, in which the pressure multiplied by the difference between the quantities: initial and final.On paper, the formula is as follows: A = pi (O1-O2), where A - do work, p - pressure - constant values, when talking about the process of isobaric, O1 - the final volume, O2 - the initial volume.Therefore, when there is compression of the gas, the operation we will have a negative value.
Due to open by Gay-Lussac in the early 19th century, properties of gases, we can move on cars where the engine incorporated principles of isobaric, enjoy the coolness that on a hot day we are presented with modern air conditioning.In addition, the study of isobaric process is happening today, and that make the work on the improvement of the equipment used in the energy sector.
