<p style="TEXT-INDENT: 27pt; MARGIN-LEFT: 9pt; mso-char-indent-count: 2.25" class="MsoNormal"><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">根据冷冻水总进<span lang="EN-US">/</span>回水温度差和流量计算系统总负荷来控制冷冻机组的运行台数。<span lang="EN-US"><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></span></span></p>
<p style="TEXT-INDENT: 27pt; MARGIN-LEFT: 9pt; mso-char-indent-count: 2.25" class="MsoNormal"><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">空调负荷计算根据<span lang="EN-US"><span style="mso-tab-count: 1"> </span>Q=C*M*(T1--T2)<o:p></o:p></span></span></p>
<p style="TEXT-INDENT: 27pt; MARGIN-LEFT: 9pt; mso-char-indent-count: 2.25" class="MsoNormal"><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang="EN-US">T1</span><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">=回水管温度,<span lang="EN-US">T2</span>=供水总管温度,<span lang="EN-US">M</span>=回水管回水流量<span lang="EN-US"><span style="mso-tab-count: 1"> </span><o:p></o:p></span></span></p>
<p style="TEXT-INDENT: 27pt; MARGIN-LEFT: 9pt; mso-char-indent-count: 2.25" class="MsoNormal"><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">当负荷大于一台机组的<span lang="EN-US">15%</span>,则第二台机组运行。<span lang="EN-US"><o:p></o:p></span></span></p>
<p style="TEXT-INDENT: 27pt; MARGIN-LEFT: 9pt; mso-char-indent-count: 2.25" class="MsoNormal"><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">根据程序或管理的日程安排自动开关冷冻机组。<span lang="EN-US"><o:p></o:p></span></span></p>
<p style="TEXT-INDENT: 27pt; MARGIN-LEFT: 9pt; mso-char-indent-count: 2.25" class="MsoNormal"><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">根据管理的要求自动切换各台冷冻机组的运行次序,累计每台机组运行时间,自动选择运行时间最短的机组,使每台机组运行时间基本相等,以延长机组使用寿命,自动监测各关键设备的运行状态,故障报警,手<span lang="EN-US">/</span>自动状态,并按照程序及实际情况自动启动备用设备。<span lang="EN-US"><o:p></o:p></span></span></p>
<p style="TEXT-INDENT: 27pt; MARGIN-LEFT: 9pt; mso-char-indent-count: 2.25" class="MsoNormal"><o:wrapblock><?xml:namespace prefix = v ns = "urn:schemas-microsoft-com:vml" /><v:shapetype id="_x0000_t75" stroked="f" filled="f" path="m@4@5l@4@11@9@11@9@5xe" o:preferrelative="t" o:spt="75" coordsize="21600,21600"><v:stroke joinstyle="miter"></v:stroke><v:formulas><v:f eqn="if lineDrawn="lineDrawn" pixelLineWidth="pixelLineWidth" 0"></v:f><v:f eqn="sum @0 1="1" 0"></v:f><v:f eqn="sum 0="0" 0="0" @1"></v:f><v:f eqn="prod @2 1="1" 2"></v:f><v:f eqn="prod @3 21600="21600" pixelWidth"></v:f><v:f eqn="prod @3 21600="21600" pixelHeight"></v:f><v:f eqn="sum @0 0="0" 1"></v:f><v:f eqn="prod @6 1="1" 2"></v:f><v:f eqn="prod @7 21600="21600" pixelWidth"></v:f><v:f eqn="sum @8 21600="21600" 0"></v:f><v:f eqn="prod @7 21600="21600" pixelHeight"></v:f><v:f eqn="sum @10 21600="21600" 0"></v:f></v:formulas><v:path o:c gradientshapeok="t" o:extrusi></v:path><o:lock aspectratio="t" v:ext="edit"></o:lock></v:shapetype></o:wrapblock><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang="EN-US"><span style="mso-tab-count: 1"> </span></span><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">冷却塔数量为<span lang="EN-US">0</span>时,代表冷却塔的风机不需开启,冷却水仅需通过自然冷却即可达到要求,此时,相应的冷却塔的水阀需打开。<span lang="EN-US">DT-</span>为避免冷却塔的冷却水供水温度在设定值附近变化时冷却塔频繁开启,所设定的一个调节死区温度值。<span lang="EN-US"><o:p></o:p></span></span></p>
<p style="TEXT-INDENT: 24pt; tab-stops: 36.0pt 49.5pt" class="MsoNormal"><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">对于带风机的冷却塔,如果在所有风机全开启后,冷却水供水温度仍不能满足工艺要求,这时通过<span lang="EN-US">BAS</span>程序会开启另外一台冷却塔来增加冷却效果。<span lang="EN-US"><o:p></o:p></span></span></p>
<p style="TEXT-INDENT: 24pt; tab-stops: 36.0pt 49.5pt" class="MsoNormal"><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">冷却塔总供回水温度监测。<span lang="EN-US"><o:p></o:p></span></span></p>
<p style="TEXT-INDENT: 24pt; tab-stops: 36.0pt 49.5pt" class="MsoNormal"><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">根据供水温度对冷却塔进行台数控制<span lang="EN-US"><o:p></o:p></span></span></p>
<p style="TEXT-INDENT: 24pt; tab-stops: 36.0pt 49.5pt" class="MsoNormal"><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">冷却塔进水阀自动开关控制。<span lang="EN-US"><o:p></o:p></span></span></p>
<p style="LAYOUT-GRID-MODE: char; MARGIN-LEFT: 18pt" class="MsoNormal"><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">累计运行时间,开列保养及维修报告。通过联网将报告直接传送至有关部门。</span><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-hansi-font-family: 华文细黑" lang="EN-US"><o:p></o:p></span></p>
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