A definite area or space where some thermodynamics process takes place. thermodynamics System has boundries
Universe = SYSTEM + SURROUNDING
TYPE OF SYS - MASS TRANS. - ENERGY TRANS
CLOSED- NO. YES
OPEN. YES. YES
ISOLATED. NO. NO
ISOLATED SYSTEM has fixed mass
Example of closed system - piston cylinder without valve
Example of open system - turbine, pump, compressor.
Example of isolated - thurmus flux, universe.
Fixed Body- Rigid box containing gas.
Movable boundary - cylinder and piston.
Property of system......
Properties are point function and are exact or perfect differential. E.g.-internal energy entropy, enthalpy.
INTENSIVE PROPERTY - Those properties which does not depends on the mass availability ex- Temperature, pressure, mue, specific heat(Cp,Cv), Specific enthalpy , velocity.
EXTENSIVE PROPERTIES - Depends on mass. E.g.- velocity, energy, magnetism, electric charge,etc.
# some terms like specific volume, specific energy, etc comes under the category of specific extensice.
POINT FUNCTION - depends on the nit path history, tempreture, pressure, volume.
PATH FUNCTION - Depends on the path history, ( work, heat).
TYPES OF THERMOMETER-
RESISTANCE THERMISTER- WHEAT STONE BRIDGE-RESISTANCE.
THERMOCOUPLE- SEEBACK EFFECT - EMF (V)
CONSTANT VOLUME GAS THERMISTER- IDEAL GAS EQUATION -PRESSURRE
CONSTANT PRESSURE GAS THERMISTER- IDEAL GAS EQUATION- VOLUME (HG IN A GLASS)
LAW OF THERMODYNAMICS