Component 144: Multi-value transmitter

Specifications

Line connections
1	Signal-entry
2	Signal-exit

General User Input Values Physics Used Displays Example

General

For auxiliary constructions, it is often necessary to transmit several or all attributes from one line to another one. In contrast to Component 36 (Value transmitter), which allows to transmit only one quantity, Component 144 is able to transmit all quantities in a component.

The component has one logic inlet and one logic outlet. To transmit values from a source line to a target line, a logic line has to be drawn from the logic inlet that ends somewhere on the source line, and a logic line from the logic outlet that ends somewhere on the target line.

The following flags serve to set which quantities are to be transmitted:

FM: mass flow is transmitted (1) or not (0)
FP: pressure is transmitted (1) or not (0)
FH: enthalpy is

o directly transmitted (1),
o transmitted in such a way that there is the same temperature at Pin 2 as at Pin 1 (2)
o not transmitted at all (0)

FCOMP: composition (including calorific value) is transmitted (1) or not (0)

However, transmitting the temperature instead of the enthalpy only makes sense if there is a different composition or a different pressure on the target line than on the source line as otherwise in the case of identical temperatures the enthalpies will be identical as well.

Stripes of the respective colour visualize which quantities are transmitted:

White for transmission of the mass flow
Red for transmission of the pressure
Blue for transmission of the enthalpy and green for transmission of the temperature respectively
Brown for transmission of the calorific value and the composition

In contrast to Component 36, Component 144 only enables a simple transmission (1:1). If it is necessary to consider factors, offsets or characteristic lines or to map different quantities onto each other, Component 36 will have to be used.

The composition can also be transferred from a water/steam line to a classic line of the air, flue gas, coal, etc. type. This then contains 100% H2O.

User Input Values

FM	Flag for specification Mass flow transfer = 0: No = 1: Yes
FP	Flag for specification Pressure transfer =0: No =1: Yes
FH	Flag for specification Enthalpy transfer =0: No =1: Yes (enthalpy) =2: Yes (temperature)
FCOMP	Flag for specification Composition transfer =0: No =1: Yes

Generally, all inputs that are visible are required. But, often default values are provided.

For more information on colour of the input fields and their descriptions see Edit Component\Specification values

For more information on design vs. off-design and nominal values see General\Accept Nominal values

Physics Used

Equations

if FM=1:

M2 – M1 = 0 (1)

if FP=1:

P2 – P1 = 0 (2)

if FH =

1: H2 – H1 = 0 (3)

2:            HX1 = H1
                               TX1 = T(P1,HX1)
                               HX2 = H(P2,TX1)
                               CP1 = CP(P1,HX1)
                               CP2 = CP(P2,HX2)
                               DH = HX2/CP2 – HX1/CP1
                             (1/CP2)*H2 – (1/CP1)*H1 =DH

Component Displays

Display Option 1

Example

Click here >> Component 144 Demo << to load an example.

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