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Hi every one,<br>
<br>
Simulating power plants I had found some problems within the steam
turbine, type 592:<br>
<br>
<ol>
<li>I have tried to simulate the power block presented by
A.M.Blanco-Marigorta [1]. The high pressure turbine works well,
but the results of the low pressure stage are completely
different. I tried to simplify the problem and analysed just one
stage ("Prueba_Tur" enclosed file): the expansion from:<br>
</li>
</ol>
<ol>
<ol>
<li>Tin = 373.4 ºC / Pin = 16.5 bar / Hin = 3196 kJ/kg</li>
<li>Pout = 13.99 bar, which must correspond with Tout = 352 ºC /
Hout = 3154.7 kJ/kg. </li>
</ol>
</ol>
<blockquote>But with TRNSYS I got Tout = 239 ºC / Hout = 2897 kJ/kg.
Isentropic eff. = 0.85. I checked this with Ebsilon and the
results from [1] should be right.<br>
</blockquote>
<ol start="3">
<li>On the other hand, I had found that this turbine, which should
works well with 5 extractions/injections, works well up to 4
extraction, but not with 5. Please, find enclosed the example
files "Prueba_Tur_LP 4 Extraction" and "Prueba_Tur_LP 5
Extraction"</li>
<li>Finally, as can be seen in "Prueba_Tur_LP 4 Extraction" the
pressure along the turbine does not vary as function of the mass
flow. Does this mean that the turbine model has not implemented
Stodola's law.</li>
</ol>
<br>
Could anyone help me?<br>
<br>
Thanks in advanced<br>
<br>
[1] <span style="font-size: 11pt;" lang="EN-GB">Blanco-Marigorta,
A. M., Victoria Sanchez-Henríquez, M., & Peña-Quintana, J. A.
(2011). </span><span style="font-size: 11pt;" lang="EN-US">Exergetic
comparison of two different cooling technologies for the power
cycle of a thermal power plant. <i>Energy</i>, <i>36</i>(4),
1966-1972. </span><span style="font-size: 11pt;" lang="EN-GB">Retrieved
from <a class="moz-txt-link-freetext"
href="http://www.sciencedirect.com/science/article/pii/S0360544210005128">http://www.sciencedirect.com/science/article/pii/S0360544210005128</a></span>
<pre class="moz-signature" cols="72">--
Javier Sanz Bermejo
IMDEA Energía
Phone: +34-917371147
e-mail: <a class="moz-txt-link-abbreviated" href="mailto:javier.sanz@imdea.org">javier.sanz@imdea.org</a>
web: <a class="moz-txt-link-freetext" href="http://www.energia.imdea.org">http://www.energia.imdea.org</a>
-----
Change the world; get into "Reduced, Reused and Recycled" Energy Cycle
1st: Reduce energy consumption
2nd: Increase energy efficiency
3rd: Use renewable energy</pre>
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