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fixed some typos
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fwitte committed Oct 25, 2018
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3 changes: 2 additions & 1 deletion doc/getting_started/cogeneration_unit.rst
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Expand Up @@ -12,10 +12,11 @@ TESPy provides a set of predefined characteristics (documented in the :py:class:

Figure: Topology of a cogeneration unit.

The characteristics take the power ratio (:math:`\frac{P}{P_{ref}}` as argument. For a design case simulation the power ratio is always assumed to be equal to 1.
The characteristics take the power ratio (:math:`\frac{P}{P_{ref}}`) as argument. For a design case simulation the power ratio is always assumed to be equal to 1.
For offdesign calculation TESPy will automatically take the rated power from the design case and use it to determine the power ratio. Still it is possible to specify the rated power manually, if you like.

In contrast to other components, the cogeneration unit has several busses, which are accessible by specifying the corresponding bus parameter:

- TI (thermal input),
- Q (total heat output),
- Q1 and Q2 (heat output 1 and 2),
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4 changes: 3 additions & 1 deletion doc/using_tespy.rst
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Expand Up @@ -982,15 +982,17 @@ Offdesign calculations use the referenced value from your system design point fo
.. note::
The available keywords for the dictionary are
- 'c' for the component instance,
- 'p' for the parameter (the cogeneration unit has different parameters, have a look at the :ref:`cogeneration unit example <cogeneration_unit_label>`),
- 'P_ref' for the reference heat flow/power value of the component and
- 'char' for the characteristic line.
There are different specification possibilites:
- If you specify the component only, the parameter will be default (not working with cogeneration unit) and the conversion factor of the characteristic line will be 1 for every load.
- If you specify a numeric value for char, the conversion factor will be that value for every load.
- If you want to specify a characteristic line, you need to provide a :py:class:`Source <tespy.components.characteristics.characteristics>` object.
- If you want to specify a characteristic line, you need to provide a :py:class:`TESPy characteristics <tespy.components.characteristics.characteristics>` object.
This can be used for easy post processing, e. g. to calculate thermal efficiency or you can build up relations between components in your network.
If you want to use the busses for postprocessing only, you must not specify the sum of the power or heat flux on your bus.
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