Parallel production
Parallel production makes it possible to configure multiple productions that work simultaneously in one system. The following figure shows on the left the base circuit of parallel production and on the right the parameter window that pops up when you click on the base circuit. The numbers on the base circuit indicate which gate is the primary and secondary gate.
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The parameter window has three different parameters that determine the operation of this base circuit. Namely ‘Heat flow on primary circuit’, ‘Primary power percentage’ and ‘Power propagation’.
Parameter | relates to | Value range |
|---|---|---|
Heat flow on primary circuit | The absolute power coming from gate 1 | [0 ; 100] MW |
Primary power percentage* | The relative power coming from gate 1 to total demand | [0 ; 100] %** |
Power propagation | How the power is divided over the gates*** | Drop-down menu with three options**** |
* This parameter is optional and does not need to be filled in.
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When the Parallel production base circuit is set on ‘regular’, the heat flow that is filled in at ‘heat flow on primary circuit’ is filled in on the primary gate and the rest, 200kW minus 120kW, is filled in on the secondary gate. When the base circuit is set on ‘Full load on primary gate', the full power is set on the primary gate and everything before the primary gate is sized on the full load. The secondary gate and everything before it is sized on the full load minus the value that is filled in at ‘Heat flow on primary circuit’. When the base circuit is set on ‘Full load on both gates', the full power is set on both gates and everything before these gates is sized on the full load. Hence, this shows that filling in the ‘power propagation’ parameter has priority over the ‘Heat flow’ and the ‘Primary power percentage’ parameter. Only when the 'power propagation is set at 'regular’, the other two parameters are taken into account.
Common errors:
Error message | Translation of the error | solution |
|---|
 | The value of ‘Heat flow on primary circuit’ is higher than the heat flow that is needed behind the base circuit. | Lower the value of 'Heat flow on primary circuit' until it is below the needed heat flow behind the base circuit. |
 | The Hysopt software calculates everything from the end units to production units and this message says that it could not do his calculations for the last 6 nodes. | Hover with your mouse over the red node/base circuit closest to the end units to get additional information about the error.  |
| The ‘Heat flow on primary circuit’ is the same as the heat flow that is needed behind the base circuit | Lower the value of ‘Heat flow on primary circuit' until it is below the needed heat flow behind the base circuit |
The ‘Primary power percentage’ is set on 100% | Lower the percentage in 'Primary power percentage’ |
Switched production
Switched parallel production makes it possible to configure multiple productions that work individually in one system. The following figure shows on the left the base circuit of switched production and on the right the parameter window that pops up when you click on the base circuit. The numbers on the base circuit indicate which gate is the primary and secondary gate. This base circuit is used when you have a production unit that is only used when the other one is no longer sufficient. For example, a backup boiler that is used when the heat pump is no longer sufficient.
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The parameter window has 2 parameters that determine the operation of this base circuit. Namely ‘Primary production regime' and ‘Primary production heat flow’.
Parameter | relates to | Value range |
|---|---|---|
Primary production regime | the temperature regime of the first gate | [-40 ; 200] °C ; [223 ; 473] K ; [-58 ; 392] °F |
Primary production heat flow | The absolute power coming from gate 1 | [0 ; 100] MW |
The parameters of the three way on-off valve and the actuator doesn’t change the operation of this base circuit. The kvs-parameters determine the pressure drop over the valve and that impacts the sizing of the pump but not the operation of this base circuit. The actuator parameter is only relevant when you choose manufacturers in the ‘catalog'-menu. For more information on the three way valve’s parameters, the user is referred toSTILL HAS TO BE MADE (Link).
Examples
All these examples use the same installation with an equivalent radiator capacity of 200 kW. The only thing that changes are the parameters on the parallel production base circuit.
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