Work (thermodynamics) of the energy went out as heat, and how much as work. This can be summarized by saying that heat and work are not state functions of the system. This is in contrast to classical mechanics, where net work exerted by a particle is a state function. Pressure–volume work (or "PV" work) occurs when the volume of a system changes. "PV" work is often measured in units of litre-atmospheres where = . However, the litre-atmosphere is not a recognised unit in the SI system of units, which measures P in Pascal (Pa), V in m, and PV in Joule (J),
Energy Research Institute of Russian Academy of Sciences divided into the following research areas: The Institute’s work is based on complex mathematical modeling, a unique database, and advanced computer technologies. Today, ERIRAS is a major scientific center that is at the forefront of fundamental and applied research. The knowledge produced by ERIRAS provides the basis for energy development forecasting and policy in Russia, the CIS, and for international energy markets. Energy Research Institute of Russian Academy of Sciences Founded in July 1985, the Energy Research Institute of the Russian Academy of Sciences (ERIRAS) was originally an outgrowth of the general energy department at Institute for High Temperatures RAS