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<table border="0" cellpadding="3" cellspacing="1" width="100%" class="forumline"> <tr> <th class="thCornerL" width="22%" height="26">Autor</th> <th class="thCornerR">Wiadomość</th> </tr> <tr> <td width="22%" align="left" valign="top" class="row1"><span class="name"><a name=""></a><b>loiwtjsf</b></span></td> <td class="row1" height="28" valign="top"><table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td width="100%"><img src="http://picsrv.fora.pl/subSilver/images/icon_minipost.gif" width="12" height="9" alt="Post" title="Post" border="0" /><span class="postdetails">Wysłany: Nie 4:57, 08 Maj 2011<span class="gen"> </span> Temat postu: &#211;culos Oakley Select large diameter electric contr</span></td> </tr> <tr> <td colspan="2"><hr /></td> </tr> <tr> <td colspan="2"><span class="postbody">Large-diameter electric control valve is an alternative choice <br /> <br /> <br />The percentage of the number of such control valve closed. This also allows smaller flow regulation. Similarly, DN400 butterfly valve adjustment (the loop of the rated flow of 900m3 / h) as an example a brief description: In order to improve control accuracy, the total flow switch valve flow 40% (360mS / h), the other with equal percentage valve. Taking into account the linear regulator, switching valves and equal percentage control valve pressure drop should be the same choice at 25kPa pressure drop, the pressure drop curves based on, switch the valve diameter of DN1O0. Flow and pressure drop according to choice, the other by three percentage DN150 valve in parallel, the pressure drop as 25kPa. Both parallel operation, when the flow is large, regulation, and the percentage of accurate flow adjustment valve; when equal percentage control valve regulating flow than 500m3 / h, turn off the switch valve, control valve by the percentage of such regulation,<a href="http://www.abercrombiemilanohollister.com" target="_blank" class="postlink">Abercrombie and Fitch</a>, according to traffic changes , regulation, and the percentage of the number of control valve closed. This also allows smaller flow regulation. Drop to less than 30kPa above subject, if the pressure drop and then take small, the need to increase the number of valves in parallel,<a href="http://www.edhardymexicos.com" target="_blank" class="postlink">ropa ed hardy</a>, in this not repeat them here. 4 Conclusion modulating valve regulator of linear features that make its poor performance. The use of multiple parallel or equal percentage control valve switching valve equal percentage control valve with a number of alternatives in parallel, can solve the problem of poor performance of its regulation is technically feasible solution. References: 【1] Shijun Liang valve choice [M】. Beijing: China Building Industry Press, 1986. 【2J2Robert · Petitjean, and so on. Overall balance of water pipe network technology 『M】. Lang Siwei, Feng iron bolt (translation). Beijing: China Building Industry Press, 1991. Received :2009-1O-12 Revised :2009-1O a 15AnAlternativeMethodforChoosingLargeCaliberAdjustingValveHULing-ling,<a href="http://www.abercrombiefrances.com" target="_blank" class="postlink">abercrombie et fitch</a>, QINRuo-si (J. Hangzhou ashamed Air-conditioningSvtemEngineeringCo., Lid, Hnagzhou310013, China; 2.McquayAirConditioning (S ∞) Co., Ltd, Shanghai200072, China) Abstract: Normally, thediameterofequalpercentageadjustingvalveisquitesmal1. Whenabigadjustingvalveisrequiredinaproject, theadjustingbutterflyvalvecanbefullyinplaceoftheequalpercentageadjustingvalve. However,<a href="http://www.edhardysdanmark.com" target="_blank" class="postlink">ed hardy bikini</a>, thebutterflyvalve'scontrolperformanceispoorwithdramaticvibration. Soitisntapplicableonoccasionsneedstablelycontrolledtemperature. Inrealitytheon-offbutterflyvalveworkswithasmalladjustingvalvecouldachieveaccuratetemperaturecontro1. Thisarticleintroducedtheregulatingcharacteristicsofvalvesanddeeplyanalysedtheapplicationofthecombinedvalvesinvariouscases. Keywords: adjustingbutterflyvalve; modelselection; alternativemethod Author: Hu Lingling (1971 a), female, Zhejiang Shaoxing, Bachelor of Engineering, engineers, engaged in the HVAC design; Qinruo Si (1971 A), female, Shanghai, Bachelor of Engineering, engineers,<a href="http://www.oakleyoculoss.com" target="_blank" class="postlink">Óculos Oakley</a>, engaged in Design of HVAC and refrigeration section 130I49 total of 30 of the total volume _ the first leaf of the <br /> <br />相关的主题文章： <br /> <br /> <br /> <a href="http://voetbalcafe.forumup.nl/viewtopic.php?p=41987&mforum=voetbalcafe#41987" target="_blank" class="postlink">oakley norge Development of higher education abroa</a> <br /> <br /> <a href="http://voetbalcafe.forumup.nl/viewtopic.php?p=41835&mforum=voetbalcafe#41835" target="_blank" class="postlink">Tory Burch UK Developed new ideas to reduce packag</a> <br /> <br /> <a href="http://lofmfzfs.xanga.com/747224470/abercrombie-et-fitch-packaging-industry-management---effecti/" target="_blank" class="postlink">abercrombie et fitch Packaging industry management - effecti</a></span></td> </tr> </table></td> </tr> <tr> <td colspan="2" height="1" class="spaceRow"><img src="http://picsrv.fora.pl/subSilver/images/spacer.gif" alt="" width="1" height="1" /></td> </tr> </table>
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