law 1 termo
3
E E E in out system Q W E net net system 2 1 ( ) net in out net out in other b b Q Q Q W W W W W PdV E Internal energy K inetic energy Potential energy E U KE PE = + + = + + 2 0 0 2 V V z z mV KE mV dV PE mg dz mgz E U KE PE Q W U KE PE net net Q W U Q W net net cycle net net BOUNDARY WORK Q net −W net =ΔE JADI JIKA PE = KE = 0 b friction atm crank 2 friction atm crank 1 ( ) W W W W F P A F ds W P dV b
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Transcript of law 1 termo
JADI
BOUNDARY WORK
JIKA PE = KE = 0
Constant Temperature, ideal gas(ISOTERMAL)
Constant Pressure(ISOBARIK)
Constant Volume(ISOKHORIK)
PV21
P-V Diagram For P = Constant
P-V diagram for V = constant
P12
V
Ketika bondary work
Energi Dalam dan Perubahan Enthalpy Pada Solids and Liquids
Ketika Gas Ideal
Polytropic Process
ProcessExponent nConstant pressure 0Constant volumeIsothermal & ideal gas1 Adiabatic & ideal gask = CP/CV
Asumsi panas specific constant (Cp = 0)
Persamaan Entalphy
Ketika bondary work
Jika incompresibel
Untuk liquid jika P = 0
Untuk liquid jika T = 0
Untuk solid dimana volume specific = 0
Jika Cp = 0
HUKUM PERTAMA UNTUK VOLUME ATURHUKUM PERTAMA UNTUK SISTEM TERTUTUP
