Expressions Flashcards
1
Q
Isobaric?
A
p = constant
2
Q
Isentropic?
A
s = constant
- adiabatic & reversible
3
Q
s?
A
entropy = measure of the irreversibilty of a process
- belongs to 2nd law of thermodynamics
- when ideal process = s =constants
- either increases or remains constants
- reversible means no entropy change
4
Q
adiabatic?
A
no heat energy transfer
T2/T1 = T3/T4 = p2/p1 ^(k-1)/k
5
Q
isothermal?
A
T = constant
6
Q
Carnot cycle
A
- ideal reversible closed thermodynamic cycle
- most efficient
- Carnot efficiency: nc = 1- (T0/T)
7
Q
Enthalpy?
A
h [kJ/kg]
- measure of total heat present in system
- p=constant
- capacity to do non-mechanical work & to release heat
- used to calculate power output of a turbine
8
Q
Clausius Rankine cycle
A
- fuel used to produce heat within boiler
- converting water into steam which then expands through a turbine producing useful work
- steam power process
9
Q
Joule cycle
A
Gas turbines
10
Q
Exergetic efficiency
A
Carnot efficiency
NICHT in % angeben, sondern 0,31
11
Q
Watt in Megawatt
A
durch 1.000.000
12
Q
Paralellschaltung
A
1/R12 = 1/R1 + 1/R2
13
Q
Reihenschaltung
A
R345 = R3 + R4 + R5
14
Q
URI
A
U = Volt
I = Ampere
R= Ohm
15
Q
Power
A
Power [Watt] = I [A] * V [V]
