datalist:10数据库“tempdb”的事务日志已满，原因为“ACTIVE_TRANSACTION”。   在 System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
   在 System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
   在 System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)
   在 System.Data.SqlClient.SqlDataReader.TryConsumeMetaData()
   在 System.Data.SqlClient.SqlDataReader.get_MetaData()
   在 System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString, Boolean isInternal, Boolean forDescribeParameterEncryption, Boolean shouldCacheForAlwaysEncrypted)
   在 System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite, Boolean inRetry, SqlDataReader ds, Boolean describeParameterEncryptionRequest)
   在 System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean& usedCache, Boolean asyncWrite, Boolean inRetry)
   在 System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method)
   在 System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method)
   在 System.Data.SqlClient.SqlCommand.ExecuteReader()
   在 B2b.Shop.ShopBase.GetDataList(Int32 iValue, Int32 iSize, List`1& loValues) 位置 f:\mywork\b2b168\b2bweb\B2bBase\ShopBase.cs:行号 4543datalist:8数据库“tempdb”的事务日志已满，原因为“ACTIVE_TRANSACTION”。   在 System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
   在 System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
   在 System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)
   在 System.Data.SqlClient.SqlDataReader.TryConsumeMetaData()
   在 System.Data.SqlClient.SqlDataReader.get_MetaData()
   在 System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString, Boolean isInternal, Boolean forDescribeParameterEncryption, Boolean shouldCacheForAlwaysEncrypted)
   在 System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite, Boolean inRetry, SqlDataReader ds, Boolean describeParameterEncryptionRequest)
   在 System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean& usedCache, Boolean asyncWrite, Boolean inRetry)
   在 System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method)
   在 System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method)
   在 System.Data.SqlClient.SqlCommand.ExecuteReader()
   在 B2b.Shop.ShopBase.GetDataList(Int32 iValue, Int32 iSize, List`1& loValues) 位置 f:\mywork\b2b168\b2bweb\B2bBase\ShopBase.cs:行号 4543datalist:5数据库“tempdb”的事务日志已满，原因为“ACTIVE_TRANSACTION”。   在 System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
   在 System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
   在 System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)
   在 System.Data.SqlClient.SqlDataReader.TryConsumeMetaData()
   在 System.Data.SqlClient.SqlDataReader.get_MetaData()
   在 System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString, Boolean isInternal, Boolean forDescribeParameterEncryption, Boolean shouldCacheForAlwaysEncrypted)
   在 System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite, Boolean inRetry, SqlDataReader ds, Boolean describeParameterEncryptionRequest)
   在 System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean& usedCache, Boolean asyncWrite, Boolean inRetry)
   在 System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method)
   在 System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method)
   在 System.Data.SqlClient.SqlCommand.ExecuteReader()
   在 B2b.Shop.ShopBase.GetDataList(Int32 iValue, Int32 iSize, List`1& loValues) 位置 f:\mywork\b2b168\b2bweb\B2bBase\ShopBase.cs:行号 4543<!DOCTYPE html>
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<h1 title="A03Q-AC220V液压冷却器">A03Q-AC220V液压冷却器</h1>
<div class="time"><span>更新时间：2024-06-22 &nbsp; 浏览数：66</span><br />
所属行业：<a href="http://info.b2b168.com/nuantongkongtiao/" target="_blank">暖通空调</a> <a href="http://info.b2b168.com/nuantongkongtiao/lengdonglengcang/" target="_blank">冷藏/冷冻设备</a> <a href="http://info.b2b168.com/nuantongkongtiao/lengdonglengcang/huanrelengque/" target="_blank">换热器/冷却器</a> </div>
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发货地址：江苏省无锡   &nbsp;<br />
产品规格：A03Q-AC220V液压冷却器<br />产品数量：868.00台<br />
包装说明：纸箱<br /><span class="">    价格：￥<i>6586.00</i> 元/台 起</span><br />
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<span class="ssx01">产品规格</span><span class="ssx02">A03Q-AC220V液压冷却器</span><span class="ssx01">包装说明</span><span class="ssx02">纸箱</span><span class="ssx01">驱动方式</span><span class="ssx02">电机</span>
<span class="ssx01">结构原理</span><span class="ssx02">冷却器</span>
<span class="ssx01">级数</span><span class="ssx02">4级/6级</span>
<span class="ssx01"></span><span class="ssx02">乾锐锋</span>
<span class="ssx01">压力</span><span class="ssx02">2.5</span>
<span class="ssx01">高压力</span><span class="ssx02">3</span>
<span class="ssx01">流量</span><span class="ssx02">800L/min</span>
<span class="ssx01">螺纹</span><span class="ssx02">英制</span>
</div>
<span>2.1.1 固定管板式换热器(代号G)</span><br><br><span>优点：结构简单、紧凑、能承受较高的压力，造价低，管程清洗方便，管子损坏时易于堵塞或换；</span><br><br><span>缺点：管束与壳体的壁温或材料的线膨胀系数相差较大时，壳体和管束中将产生较大的热应力</span><br><br><span>这种换热器适用于壳层介质清洁且不易结垢、并能进行清洗、管程与壳程两侧温差不大或者温差较大但壳层压力不高的场合。</span><br><img src="//l.b2b168.com/2021/06/21/10/202106211034097470644.jpg"><br><span>2.1.2 浮头式换热器(代号P)</span><br><br><span>优点：管内和管间易于清洗，不会产生热应力；</span><br><br><span>缺点：结构复杂，造价比固定管板式换热器高，设备笨重，材耗量大，且浮头端小盖在操作中无法检查，制造时对密封要求高。</span><br><br><span>这种换热器适用于壳体和管束之间壁温差较大或壳程介质易结垢的场合。</span><br><div><br></div><span>1不清洁或易结垢的流体，宜走容易清洗的一侧。对于直管管束，宜走管程，便于清洗；对于U型管管束，宜走壳程。</span><br><br><span>2腐蚀性流体宜走管程，以免壳体和管束同时被腐蚀。</span><br><img src="//l.b2b168.com/2021/06/21/11/202106211104110129884.jpg"><br><span>3压力高的流体走管程，以免制造较厚的壳体。</span><br><br><span>4为增大对流传热系数，需要提高流速的流体的宜走管程，因管程流通截面积一般比壳程的小，且做成多管程也教容易。</span><br><br><span>5两流体温差较大时，对于固定管板式换热器，宜将对流传热系数大的流体走壳程，以减小管壁与壳体的温差，减小热应力。</span><br><br><span>6蒸汽冷凝宜走壳程，以利于散热、排出冷凝液，增强传热效果。</span><br><img src="//l.b2b168.com/2021/06/21/10/202106211034096588214.jpg"><br><span>7需要冷却的流体宜走壳程，，以减小冷却剂用量。但温度很高的流体，其热能可以利用，宜走管程，以减小热损失。</span><br><br><span>8粘度大或流量小的流体宜走壳程，因由折流挡板的作用 ，在低Re数下（Re&gt;100）即可达到湍流。</span><br><br><p>在选择流动管道时，上述原则往往不能同时兼顾，应视具体问题抓住主要方面，一般首先考虑流体的压力降、防腐蚀清洗等要求，然后在校核对流传热系数和流动阻力，以便做出恰当的选择。</p><p>型号说明：</p><span><br></span><img src="//l.b2b168.com/2021/06/23/11/202106231158258922504.jpg"><br><p><br></p><p>A03Q液压冷却器A03Q-DC24V液压冷却器液压冷却器<br>A03Q-AC220V液压冷却器A03Q-AC110V液压冷却器液压冷却器<br>JC-YL-A03Q液压冷却器JC-YL-A03Q-DC12V液压冷却器JC-YL-A03Q-DC24V液压冷却器液压冷却器<br>JC-YL-A03Q-AC220V液压冷却器JC-YL-A03Q-AC110V液压冷却器</p><br /><a href="http://galon.b2b168.com/">http://galon.b2b168.com</a>
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