Definition - What does Isothermal Compression mean?
Isothermal Compression is the change of the volume of a substance when the temperature remains constant. It is a useful concept that determines the compressible properties of a reservoir. It denotes the relationship between the pressure and density when the gas undergoes the compression process. It also depends on the nature of the process, as in the entire process the temperature remains constant thus the internal energy also remains constant. However, the volume and the average distance changes during the Isothermal Compression. It is used as a standard with which actual compression can also be checked.
Petropedia explains Isothermal Compression
Isothermal Compression mainly occurs in high structured machines and in living cells. It occurs when the phase changes either during the melting point or evaporation. While calculating the Isothermal Compression, the thermodynamic sign convention remains negative. Moreover, the reciprocal of modulus of elasticity also defines the Isothermal Compression of gases. Formation volume factor displays a close relationship between the molecules of gas and isothermal gas compressibility. Apart from this, the compression is used to monitor the efficiency of engines, as it can be used to determine the working of various parts of heat engines through the Carnot cycle.