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Hi every one,<br>
<br>
Simulating power plants I had found some problems within the steam
turbine, type 592:<br>
<ol>
<li>It does not have implemented Stodola's law, to analyse the
pressure variation along the turbine as function of the steam
mass flow, which changes steam outlet conditions. Thus, this
type cannot be use to make any transient analysis at all.</li>
<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: 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.</li>
</ol>
<br>
Did anyone find any reason for this problem?<br>
<br>
Thanks in advanced<br>
<br>
[1]
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<![endif]--><span style="font-size: 11pt; font-family: "Arial
Narrow","sans-serif";" lang="EN-GB">Blanco-Marigorta,
A. M., Victoria
Sanchez-Henríquez, M., & Peña-Quintana, J. A. (2011). </span><span
style="font-size: 11pt; font-family: "Arial
Narrow","sans-serif";" 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; font-family: "Arial
Narrow","sans-serif";" 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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