Engee documentation

Interface (TL-IL)

The boundary between thermal liquid and isothermal liquid networks.

interface tl il

Description

The Interface (TL-IL) unit allows thermal liquid and isothermal liquid networks to be connected.

The mass flow rate and fluid pressure are matched between the networks, but fluid properties are not transferred between them. To preserve the properties of the liquid between the thermal and isothermal components of the model, connect the Isothermal Liquid Properties (IL) block with the desired properties to the isothermal network side.

You can connect the Thermal liquid library blocks to the Isothermal liquid library blocks. If the Controlled temperature check box is unchecked, the temperature of the isothermal liquid is constant and is set in the Interface temperature parameters. If Controlled temperature is checked, the isothermal liquid temperature is set by the thermal liquid temperature through the T port.

interface il tl 1 en

The mass flow rate is stored in the two networks:

where

  • - is the mass flow rate of thermal liquid at the boundary;

  • - isothermal liquid mass flow rate at the boundary.

Absolute pressure of liquid in thermal liquid and isothermal liquid sections of the block, as well as inside the block itself is kept constant:

Ports

Conserving

# IL — isothermal liquid port
isothermal liquid

Details

The inlet or outlet port of an isothermal liquid network.

Program usage name

isothermal_liquid_port

# TL — thermal liquid port
thermal liquid

Details

The inlet or outlet port of a thermal liquid network.

Program usage name

thermal_liquid_port

Input

# T — temperature of thermal liquid
thermal liquid

Details

The temperature of a thermal liquid.

Dependencies

To use this port, select the Controlled temperature checkbox.

Data types

Float64.

Complex numbers support

No

Parameters

Parameters

# Controlled temperature — switch on the adjustable temperature option

Details

When unchecked, the isothermal liquid temperature is constant and set in the Interface temperature parameters.

If this checkbox is selected, the isothermal liquid temperature is set by the thermal liquid temperature through the T port.

Default value

false (switched off)

Program usage name

controlled_temperature

Evaluatable

No

# Interface temperature — constant temperature of liquid in isothermal liquid network
K | degC | degF | degR | deltaK | deltadegC | deltadegF | deltadegR

Details

Constant liquid temperature transferred from a thermal liquid network to an isothermal liquid network.

Dependencies

To use this parameter, deselect the Controlled temperature checkbox.

Values

K | degC | degF | degR | deltaK | deltadegC | deltadegF | deltadegR

Default value

293.15 K

Program usage name

T_thermal_liquid_const

Evaluatable

Yes

# Cross-sectional area at port TL — cross-sectional area of thermal liquid port
m^2 | cm^2 | ft^2 | in^2 | km^2 | mi^2 | mm^2 | um^2 | yd^2

Details

Port cross-sectional area TL for thermal liquid.

Values

m^2 | cm^2 | ft^2 | in^2 | km^2 | mi^2 | mm^2 | um^2 | yd^2

Default value

0.01 m^2

Program usage name

port_area

Evaluatable

Yes