6.5. Converters

Fig. 6.5.1 Schematic overview of a converter

Fall type

type label	description	active
Converter liquid to heat	Converter to enable the connection of liquid component to heat components	Yes

6.5.1. Mathematical model

Liquid to Heat

The converter component converts the core quantities of one domain to the core quantities of another, which enables the combination of different domains. No hydraulic losses are taken into account over the converter.

The basic equations for the liquid to heat converter are:

(6.5.1)\[P = \rho g \left( H - z \right)\]

with:

Variable	Description	Units
\(Q\)	Flow rate	m3/s
\(\rho\)	Fluid density	kg/m3
\(g\)	Gravitational acceleration	m/s2
\(H\)	Energy head	m
\(z\)	Height at the connection point	m
\(P\)	Total pressure	barg

The method to define the density of the fluid depends on the flow direction, when the flow direction is from:

1. the heat domain towards the liquid domain, the density is known (i.e., based on the fluid temperature at the connected heat node).

2. the fluid domain towards the heat domain, the density is unkonwn. Therefore, the temperature of the fluid must be supplied with an action table, a constant value, or a control component.

In both cases, the density is derived from the fluid properties table using the temperature.

6.5.2. Liquid to heat converter

6.5.2.1. Hydraulic specifications

Description	Input	unit	range	default	remarks
Inner diameter	Real	[m]			This is only used to calculate the velocity
Temperature at [t = 0 s]	Real	[oC]

6.5.2.2. Component specific output

6.5.2.3. H-actions

In transient calculations the temperature can be change over time by using an action table or by control.

6.5.2.4. Component messages

Message	Type	Explanation