Category: Thermodynamics

thermodynamics, science of the relationship between heat, work, temperature, and energy. In broad terms, thermodynamics deals with the transfer of energy from one place to another and from one form to another. The key concept is that heat is a form of energy corresponding to a definite amount of mechanical work.29-Jul-2024

A real gas is defined as a gas that at all standard pressure and temperature conditions does not obey gas laws. It deviates from its ideal behaviour as the gas becomes huge and voluminous. True gases have velocity, mass, and volume.

The overall state of the gas is determined by the interplay of pressure, volume and temperature, as defined by the Ideal Gas Law: P V = n R T where: P = Pressure, V = Volume, n = Number of moles of gas, R = Universal gas constant, T = Temperature (in Kelvin).

The term system may be defined as an orderly arrangement of a set of interrelated and interdependent elements that operate collectively to accomplish some common purpose or goal. For example – Human body is a system, consisting of various parts such as head, heart, hands, legs and so on.

The state of a thermodynamic system is defined by its current condition and the collection of its thermodynamic properties such as temperature, pressure, volume, internal energy, and entropy of the system

Gases have three characteristic properties: (1) they are easy to compress, (2) they expand to fill their containers, and (3) they occupy far more space than the liquids or solids from which they form. Compressibility. An internal combustion engine provides a good example of the ease with which gases can be compressed.

Thermodynamic properties are those that describe the state of a system in terms of its energy. The four most common thermodynamic properties are enthalpy, entropy, Gibbs free energy, and internal energy.

Broadly speaking, thermodynamics is a branch of science that deals with heat, work and temperature, and their relation to energy, radiation and physical properties of matter. It explains how thermal energy is converted to or from other forms of energy and how matter is affected by this process.