Yes. There are scenarios where pressure can change along with volume, but you can't have work done with a pressure change and no volume change.sp3sp2sp said:Why isn't it called deltaP *delta V work? Or deltaP*V work?
Does the expression mean that P is constant while V changes...
A hydraulic or pneumatic piston....and also what is an example of that?
Pressure Volume Work is called P*delta V because it is the product of pressure (P) and change in volume (delta V). This term is commonly used in thermodynamics to describe the work done by a system as it undergoes a change in volume.
To calculate Pressure Volume Work, you multiply the pressure (P) by the change in volume (delta V). The formula is W = P * delta V. The unit for work is typically Joules (J).
Pressure Volume Work is significant in thermodynamics because it is a measure of the energy exchanged between a system and its surroundings during a change in volume. It is an important concept in the study of heat and energy transfer.
Yes, Pressure Volume Work can be negative. This occurs when the system does work on its surroundings, such as in the case of a gas expanding against a piston. In this scenario, the work is considered to be negative because the energy is being transferred out of the system.
Pressure Volume Work is a type of work described in the First Law of Thermodynamics, which states that energy cannot be created or destroyed, only transferred or converted from one form to another. In the case of Pressure Volume Work, the energy is being transferred between a system and its surroundings in the form of work.