# Análisis 64: Ciclo de Rankine de doble recalentamiento intermedio con tres etapas&#x20;

{% hint style="info" %}
Un ciclo de Rankine con doble recalentamiento intermedio está formado por tres etapas de expansión (17000 kPa, 10000 kPa, 2000 kPa, 11 kPa). El combustible gaseoso está formado por una mezcla volumétrica de metano (92%) y etano (8%). El aire y combustible entran a 100 kPa y 25 ºC. El exceso de aire es del 160 %. El flue-gas sale por la chimenea a 427 ºC y 100 kPa. La humedad relativa del aire es del 70 %.

Obtener:

1. Balance de materia
2. Balance energético
3. Balance exergético
   {% endhint %}

![](https://thermosuite.com/manual/64/media/image2.png)

<figure><img src="https://2560597899-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FLkHubMayHg3IFaHzzF7c%2Fuploads%2FHQib6vLIk6z7WT7bVWyM%2Fgaseous%20mixtuve%20volumetric.png?alt=media&#x26;token=1b9ebe97-9558-4264-8995-10e517a531e5" alt=""><figcaption></figcaption></figure>

El esquema de la instalación es:

![](https://thermosuite.com/manual/64/media/image3.png)

![](https://thermosuite.com/manual/64/media/image4.png)

![](https://thermosuite.com/manual/64/media/image5.png)

![](https://thermosuite.com/manual/64/media/image6.png)

![](https://thermosuite.com/manual/64/media/image7.png)

![](https://thermosuite.com/manual/64/media/image8.png)

![](https://thermosuite.com/manual/64/media/image9.png)

![](https://thermosuite.com/manual/64/media/image10.png)

![](https://thermosuite.com/manual/64/media/image11.png) ![](https://thermosuite.com/manual/64/media/image12.png)

![](https://thermosuite.com/manual/64/media/image13.png)

![](https://thermosuite.com/manual/64/media/image14.png)

![](https://thermosuite.com/manual/64/media/image15.png)

![](https://thermosuite.com/manual/64/media/image16.png)

![](https://thermosuite.com/manual/64/media/image17.png)

![](https://thermosuite.com/manual/64/media/image18.png)

![](https://thermosuite.com/manual/64/media/image19.png)

![](https://thermosuite.com/manual/64/media/image20.png)

![](https://thermosuite.com/manual/64/media/image21.png) ![](https://thermosuite.com/manual/64/media/image22.png)

![](https://thermosuite.com/manual/64/media/image23.png)

![](https://thermosuite.com/manual/64/media/image24.png)

![](https://thermosuite.com/manual/64/media/image25.png)

![](https://thermosuite.com/manual/64/media/image26.png)

![](https://thermosuite.com/manual/64/media/image27.png)

![](https://thermosuite.com/manual/64/media/image28.png)

![](https://thermosuite.com/manual/64/media/image29.png)

![](https://thermosuite.com/manual/64/media/image30.png)

![](https://thermosuite.com/manual/64/media/image31.png)

Si resolvemos el ciclo sin recalentamiento:

![](https://thermosuite.com/manual/64/media/image19.png)

![](https://thermosuite.com/manual/64/media/image32.png)

![](https://thermosuite.com/manual/64/media/image33.png) ![](https://thermosuite.com/manual/64/media/image34.png)

![](https://thermosuite.com/manual/64/media/image35.png)

![](https://thermosuite.com/manual/64/media/image36.png)

![](https://thermosuite.com/manual/64/media/image26.png)

![](https://thermosuite.com/manual/64/media/image37.png)

![](https://thermosuite.com/manual/64/media/image38.png)

Observamos que el índice de sustentabilidad se reduce, lo que indica que este ciclo es más respetuoso con el medio ambiente.

![](https://thermosuite.com/manual/64/media/image39.png)
