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Flashcards in Module 1 Deck (30):
1

What is the 1st law of TD

Conservation of Energy - Energy cannot be created or destroyed

2

What is the second law of TD

Entropy can be created but not destroyed

3

Whats the difference between Classical and Statistical TD

Classic: Engineering (macroscopic)
Stastical: Average behaviour of particles (microscopic)

4

What are the two types of non mass energy transfers

Work and Heat

5

What is heat transfer?

Energy transfer due to temperature difference

6

What is the 0th law of TD

if SYS A and SYS B are in equilibrium with SYS C they are in equilibrium with eachother

7

What are the three types of Heat transfer modes

Conduction (Stationary Medium), Radiation (EM waves), Convection (Fluid)

8

What is the difference between the 'd' and delta symbols

d: small change in a property
delta: small quantity being added or removed

9

What are the two types of SYS

CM: Controlled Mass
CV: Controlled Volume

10

What is a CV system

fixed sized system. m,Q,W may transfer across boundary. Boundary usually fixed but may move (keeping volume constant)

11

What is CM system?

specific amount of matter. No m transfer across the boundary, but W and Q still possible. Boundary often changes

12

What is an isolated system?

No transfers across boundaries

13

What is the difference between extensive and intensive properties

extensive: dependent on amount of matter, intensive: independent on amount of matter (paper test)

14

What is a Pure Substance

uniform chemical composition throughout substance. phase may vary

15

What is a state equation?

EQ used to relate TD properties (Pv = RT)

16

What is Internal Equilibrum?

In internal balance, no observable macroscopic changes within the system

17

What is TD Equilibrium

All properties are in balance, no gradients exist.

18

What is a FT process

process occurs over a set amount of time

19

What is a Brief Moment process

A small instant in a FT process (deals with dE, dW etc). Integrating Brief Moment processes yields FT processes.

20

What is Rate Analysis?

Use Rate balance EQs (dE = dQ- dW)

21

What is a Quasi Equilibrium Process

process proceeds slowly enough that internal equilibrium is maintained

22

What is a process path

Describes a process state at every instant in the process

23

What is a process cycle

A sequence of processes where a CM Sys returns to its original state at the end

24

What is Steady State(SS)

state of Sys does not vary with time

25

What is a SF system

Flows in and out of a system are constant

26

What is the general form of a FT Balance Eq?

(B2 - B1) = (Badded + Bgen) - (Bremoved + Bdestroyed)

27

what is the general form of a Rate Balance EQ

dB/dt = (dBadded/dt + dBgen/dt) - (dBremoved/dt + dBdestroyed/dt)

28

What is the general mass balance equation

m1->2 = madded - mout. for CM, m1->2 = 0

29

What is the general Energy Balance eq

E1->2 = Ein - Eout

30

What is the general form of Entropy Balance Equation

S1->2 = Sadded + Sgen - Sout