T-S Diagrams
No change in entropy.
What is isentropic?
m(delta_h)
Q-W = (sum)m*h_out - (sum)m*h_in
What is the first law of thermodynamics?
Turbine, Condenser, Pump, Boiler
What are the components of a standard rankine cycle?
A perfect rectangle on a TS diagram.
What is the ideal/perfect brayton cycle?
Usually the highest component on the T-S diagram.
What is the turbine?
W_net/Q_added
What is adiabatic?
The exit of Q. (Q-)
What is the Q of the condenser?
Q_rej location.
What is after the turbine?
The left side of the vapor dome.
What is the compressed/subcooled liquid region?
(T_H + T_L)/2
What is the equation for T_opt for a feedwater heater that is optimally placed?
What is heat transfer TO the system (Q_added to boiler)?
The exit of the work (W+)
What is the turbine output?
The top and bottom lines of a brayton cycle cartoon (TS diagram).
What are constant pressure lines on a Brayton Cycle?
The vertical lines under the vapor dome (not enthalpy).
What are quality lines?
1 - (T_L/T_H)
What is the equation for carnot efficiency?
Moving from one pressure line to the next one through a pump.
What is isentropic compression?
The work input location (component) (W-).
What is the pump?
The highest point on the brayton cycle TS drawing.
What is the turbine inlet?
The right side of the vapor dome.
What is the superheated region?
W = m(h1-h2)+(m-m2)(h2-h3)
What is the work equation for a turbine?
p(absolute)-p_atm(absolute)
What is p(gage)?
The coldest point in the standard rankine cycle.
Q_added location?
What is the combustor/heat exchanger?