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font-size: medium; white-space: normal; background-color: rgb(218, 252, 218);"/> 1、物料厚度直接影响物料的干燥时间，因为物料厚度越大，其传热传质的阻力越大，物料内部的水分就越难向外传递，所以干燥时间也就越长。<br style="font-family: Simsun; font-size: medium; white-space: normal; background-color: rgb(218, 252, 218);"/> 2、预冻温度和维持时间若预冻没有冻好，或冻结不实，在进入第一阶段升华干燥时，物料可能出现“沸腾”现象，或冻干后制品表面凹凸不平，影响外观；如果冷的过低，则浪费了能源和时间。预冻所需的时间要根据不同的具体条件来确定。但总的原则是，应使制品的各部分完全冻实。<br style="font-family: Simsun; font-size: medium; white-space: normal; background-color: rgb(218, 252, 218);"/> 3、升华界面的温度(或供热量)和水蒸汽逸出制品的能力前者主要由隔板的温度和干燥箱的压力(真空度)所决定，而后者主要由升华界面的温度(对应的水蒸汽饱和压力)和箱内的水蒸汽分压所决定。</p><p><br/></p><p><span style="color: rgb(51, 51, 51); font-family: 宋体; font-size: 14px; line-height: 28px; background-color: rgb(255, 255, 255);">信息来源:上海田枫仪器有限公司：冻干机www.tfyqchina.cn 冷水机www.tfsye.com</span></p></div> </div> <div class="blank30"></div> <div class="blank30"></div> <!--自动调用自定义字段--> <div class="blank20"></div> <div class="blank30"></div> </div> <!-- 投票 --> <script src="/index.php?case=vote&act=view&aid=585"></script> <div class="w_set"> <!-- 自定义表单开始 --> <!-- 自定义表单结束 --> <div class="blank60"></div> <!-- 上下页开始 --> <div id="page"> <strong>上一篇</strong><a href="/html/news/show_584.html">冻干机在新鲜精液制备的操作</a> <div class="blank10"></div> <strong>下一篇</strong><a href="/html/news/show_586.html">上海田枫10到40平方生产型冻干机参数</a> </div> <!-- 上下页结束 --> </div> <!-- 相关文章开始 --> <div class="blank60"></div> <!-- 页面标题开始 --> <div class="c_h1"> <div> <h1></h1> <p class="t_tools1">相关内容</p> </div> </div> <div class="w_set"> <ul class="list_page_1"> <!-- 内容列表开始 --> <li> <div class="list_page_date"> <h1>02</h1> <p>2017-08</p> </div> <div class="li_text_w"> <p><a title="" href="/html/news/show_1339.html" target="_blank" class="list_page_t">乳酸菌菌种的冻干工艺技术、乳酸菌菌种冻干</a></p> <p>影响冻干机干燥过程及其冻干质量的因素，也就是一条理想的冻干曲线要受到诸如物料性质、浓度、升华面积、共晶点、热传导介质和方式、设备性能等因素的制约… <a href="/html/news/show_1339.html" target="_blank">[了解更多]</a></p> <div class="clear"></div> </div> <div class="clear"></div> </li> <li> <div class="list_page_date"> <h1>02</h1> <p>2017-08</p> </div> <div class="li_text_w"> <p><a title="" href="/html/news/show_1338.html" target="_blank" class="list_page_t">酸奶块冻干机工作原理，酸奶块冻干生产线工</a></p> <p>影响冻干机干燥过程及其冻干质量的因素，也就是一条理想的冻干曲线要受到诸如物料性质、浓度、升华面积、共晶点、热传导介质和方式、设备性能等因素的制约… <a href="/html/news/show_1338.html" target="_blank">[了解更多]</a></p> <div class="clear"></div> </div> <div class="clear"></div> </li> <li> <div class="list_page_date"> <h1>02</h1> <p>2017-08</p> </div> <div class="li_text_w"> <p><a title="" href="/html/news/show_1337.html" target="_blank" class="list_page_t">水果冻干机工作原理和流程、水果冷冻干燥机</a></p> <p>影响冻干机干燥过程及其冻干质量的因素，也就是一条理想的冻干曲线要受到诸如物料性质、浓度、升华面积、共晶点、热传导介质和方式、设备性能等因素的制约… <a href="/html/news/show_1337.html" target="_blank">[了解更多]</a></p> <div class="clear"></div> </div> <div class="clear"></div> </li> <li> <div class="list_page_date"> <h1>02</h1> <p>2017-08</p> </div> <div class="li_text_w"> <p><a title="" href="/html/news/show_1336.html" target="_blank" class="list_page_t">生物制药冻干机工作原理，生物制品冷冻干燥</a></p> <p>影响冻干机干燥过程及其冻干质量的因素，也就是一条理想的冻干曲线要受到诸如物料性质、浓度、升华面积、共晶点、热传导介质和方式、设备性能等因素的制约… <a href="/html/news/show_1336.html" target="_blank">[了解更多]</a></p> <div class="clear"></div> </div> <div class="clear"></div> </li> <li> <div class="list_page_date"> <h1>02</h1> <p>2017-08</p> </div> <div class="li_text_w"> <p><a title="" href="/html/news/show_1335.html" target="_blank" class="list_page_t">化妆品冻干机工艺技术、保护剂在化妆品冻干</a></p> <p>影响冻干机干燥过程及其冻干质量的因素，也就是一条理想的冻干曲线要受到诸如物料性质、浓度、升华面积、共晶点、热传导介质和方式、设备性能等因素的制约… <a href="/html/news/show_1335.html" target="_blank">[了解更多]</a></p> <div class="clear"></div> </div> <div class="clear"></div> </li> <!-- 内容列表结束 --> </ul> <!-- 相关文章结束 --> </div> <div class="blank30"></div> <div class="clear"></div> </div> </div> <div class="bg_11"> <div class="w cf pt_xxl" style="margin:auto; 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