## Characteristics of an ideal working fluid in vapour power cycles

We all know any thermodynamic power cycle depends on some working fluid for the transfer of heat from source to the point where it is converted to some useful work. Picking a working fluid for any vapour power cycle is not a random decision, since in case of any malfunction…

## Availability and dead state of a thermodynamic system

When a system is not in equilibrium (or dead state in this case) with its surroundings there is an opportunity in convert this departure from equilibrium to some useful work. For example, if there is a difference between the temperature of system and surroundings then this temperature difference can be…

## Specific heat and latent heat

Specific heat Specific heat is defined as the amount of heat required to raise the temperature of one kg substance by one degree Kalvin. The value of specific heat (c) is obtained by following equation  c = Q/ (m* Δt) J/kg K Where Q is amount of heat transfer in…

## Path function and point function

A brief discussion on path function and point function For solving problems based on Thermodynamics, knowledge of path function and point function is necessary. Hence it is necessary for a student to understand this concept properly. Path function A Path function is a function whose value depends on the path…

## Thermodynamic property, process and cycle

Thermodynamic property A thermodynamic property is a state variable whose value defines a state of the system for e.g. pressure, temperature, and volume. Thermodynamic properties are macroscopic in nature. When these values are constant, the system is said to be in a definite state. Thermodynamic properties are generally divided into…

## Thermodynamic system (open, closed, isolated)

A thermodynamic system can be defined as a quantity of matter or a region in space which is under investigation, anything external to the system is called surrounding or environment. A system is separated from the surrounding with the help of boundary. A boundary may be rigid or flexible. Both…

## Irreversibility of a thermodynamic process

To understand Irreversibility of a thermodynamic process first we have to understand what is reversibility. If in the end of a process both the systems and surroundings get restored to their original condition, the process is called reversible process. Similarly, if the system and surrounding are not restored to their original…