Thermo

Question 1

Work

Answer 1

dW = Fdl

Question 2

Potential Energy

Answer 2

PE = (mgz)/ gc

Question 3

Kinetic Energy

Answer 3

KE = (mv^2)/2gc

Question 4

Work in fluid system

Answer 4

dW = -PdV

Question 5

Ideal Gas Constants (R)

Answer 5

8.314 J/mol K or Pa m3/mol K
0.08205 L atm/mol K
1.987 cal/mol K
10.73 ft3 psi/lbmol R
0.73 ft3 atm/lbmol R

Question 6

Work done on the system

Answer 6

Endergonic

Question 7

Work done by the system

Answer 7

Exergonic

Question 8

Heat absorbed by the system

Answer 8

Endothermic

Question 9

Heat release by the system

Answer 9

Exothermic

Question 10

Gibbs Phase Rule

Answer 10

F = 2 - pi + N

pi - # of phases (liq solid gas)
N - # of components (water, alcohol etc)

Question 11

Joule’s Experiment

Answer 11

Win = Qout
delta PE = mCp(deltaT)

Question 12

Heat Capacity Cp water

Answer 12

4.184 kJ/kg K
1 BTU/lbm F

Question 13

Internal Energy

Answer 13

delta U = Q + W

Question 14

Enthalpy

Answer 14

delta H = delta U + delta (PV)
dH = dU + d(PV)

Question 15

Heat Capacity C

Answer 15

C = dQ/dT

Question 16

Isochoric (V=k)

Answer 16

W = 0
Cp = dU/dT
Q = delta U = integral CvdT

Question 17

Isobaric (P=k)

Answer 17

W = -PdV = -RdT (for ideal gas)
Q = delta H = integral CpdT

Question 18

Introduced Zeroth Law of Thermodynamics

Answer 18

Ralph Howard Fowler

Question 19

State that exists between two subsystems of equal temperature

Answer 19

Thermal Equilibrium

Question 20

Introduced the First Law of Thermodynamics

Answer 20

Rudolf Julius Emmanuel Clausius

Question 21

Energy conserved after the transfer of heat or work

Answer 21

Internal Energy

Question 22

Energies in transit. Only exists when energy is being transferred from one system to the next

Answer 22

Heat and Work

Question 23

Functions that depend on the current state of the system and not on how the system reaches that state

Answer 23

State / Point Function

H S T P V

Question 24

Functions that depend on the path followed during the process

Answer 24

Path Function

W Q

Question 25

Closed System Energy Balance (Non-flow)

Answer 25

delta U = Q + W

Question 26

Open System Energy Balance (Steady Flow)

Answer 26

delta H + delta PE + delta KE = Q + Ws

Question 27

Isothermal (T=k)

Answer 27

W = RT ln(V1/V2)
= RT ln(P2/P1)
Q = -W
delta U = 0
delta H = 0

Question 28

Adiabatic

Answer 28

Q = 0
W = delta U

Question 29

Pump Work

Answer 29

Wact = W/eff

Question 30

Turbine Work

Answer 30

Wact = W x eff

Question 31

Density of Water

Answer 31

1000 kg/m3
62.4 lb/ft3