Ideal flow rate source (TL)#

The Ideal flow rate source (TL) block is an ideal source of mechanical energy in a thermal hydraulic network.

Hint

The source can maintain a predetermined mass flow regardless of the differential pressure.

Important

There is no flow resistance and heat exchange with the environment in the block.

Hint

The block can operate with and without performing work on the medium.

If isentropic mode is selected, then the following expression is valid for operation (1) :

(1)#\[\phi_{раб}=\frac {\dot m \cdot (p_B-p_A)}{\rho_{ср}} \]

where:

\( ho_{med}=\frac{ ho_A + ho_B}{2}\), [kg/m\(^3\)];

\(\dot m\) – medium mass flow rate, [kg/s];

\(p_A\), \(p_B\) – medium pressure at inlet and outlet, [Pa].

Then the energy conservation equation (2):

(2)#\[\phi_A+\phi_B+\phi_{раб}=0\]

where:

\(\phi_A\) – energy flow at the input, [W];

\(\phi_B\) – energy flow at the output, [W];

\(\phi_{oper}\) – power transmitted to the medium, [W].

(3)#\[\phi_A+\phi_B=0\]

1. Properties#

Property	Default Value	Description	Units of measurement
Source type: Constant; Controlled	Constant	-	-
Mass flow rate, available when selecting `Source type` - `Constant`	1.0	-	kg/s
Power added: Isentropic; None	Isentropic	-	-
Ports cross-sectional area	0.01	-	m\(^2\)

Parameters	Input/Output	Description	Units of measurement	Port type
Mass flow rate, available when selecting `Source type` - `Controlled`	Input	-	kg/s	Automation
Input	Input	-	-	Thermohydraulics
Output	Output	-	-	Thermohydraulics

In order to see the connection capabilities of the block, you need to go to page Description of block ports