谷物冷却机环流冷却技术在浅圆仓中的应用研究

本文探讨增加一系列风管和控制机构使浅圆仓冷却通风形成环流状态,通过对谷物冷却作业过程中粮堆热交换后所排出空气进行回收并重复利用,达到节省能源,提高谷物冷却机作业能力和效率的目的,并对该套装置潜在的效益和在低温储粮中的作用进行了评估。

谷物冷却机环流冷却技术在高大平房仓中的应用研究

增设回风管道使高大平房仓冷却通风形成环流状态,通过对谷物冷却作业过程中粮堆热交换后所排出的空气进行回收并重复利用,达到节省能源,提高谷物冷却机作业能力和效率的目的。

小型谷物冷却机膜下间歇内环流冷却试验

针对旧房式仓储粮度夏时粮温高、温差大的特点,采用小型谷物冷却机进行膜下间歇内环流冷却低温储粮试验,重复利用粮堆回流冷气,达到降低粮温,节省能源,提高谷物冷却机作业能力和效率的目的,具有明显的经济效益和社会效益。

小型谷物冷却机膜下间歇内环流冷却试验

针对旧房式仓储粮度夏时粮温高、温差大的问题,采用小型谷物冷却机进行膜下间歇内环流冷却低温储粮试验,重复利用粮堆回流冷气,达到降低粮温,节省能源,提高谷物冷却机作业效率的目的,具有明显的经济效益和社会效益。

一种泥水盾构机冷却水环流系统设计

对可编程控制器、人机界面、变频器以及光纤数据传输等技术专业知识的应用直径泥水盾构机外循环冷却水环流的自动控制,做到实时监控冷却水环流数据、实现超长距离一键启动/停止等功能;替代传统人工控制,充分发挥自动化控制技术的优势,对控制装置做到控制精细、响应及时;保证盾构机的冷却效果,提高盾构机施工效率,保障盾构机发挥最大能效。

Influence of thermal flow field of cooling tower on recirculation ratio of a direct air-cooled system for a power plant

In order to get thermal flow field of direct air-cooled system,the hot water was supplied to the model of direct air-cooled condenser(ACC). The particle image velocimetery (PIV) experiments were carried out to get thermal flow field of a ACC under different conditions in low velocity wind tunnel,at the same time,the recirculation ratio at cooling tower was measured,so the relationship between flow field characteristics and recirculation ratio of cooling tower can be discussed. From the results we can see that the flow field configuration around cooling tower has great effects on average recirculation ratio under cooling tower. The eddy formed around cooling tower is a key reason that recirculation produces. The eddy intensity relates to velocity magnitude and direction angle,and the configuration of eddy lies on the geometry size of cooling tower. So changing the flow field configuration around cooling tower reasonably can decrease recirculation ratio under cooling tower,and heat dispel effect of ACC can also be improved.