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摘要空气加湿是指增加空气中水蒸气含量，使其达到所需湿度的重要技术，广泛运用于工业生产和日常生活等领域。为得到不同湿度的空气，设计出了一种用颗粒移动床加湿空气的实验装置方案，首先是颗粒移动床设计，包括对颗粒的选型、移动床中流体-固体复杂流动的传热计算、传质计算和压降计算，设计出移动床的尺寸；其次是辅助设备的设计与选型计算，包括给颗粒进行补充水分和热量的颗粒加温加湿装置设计，出料机、送料机的选型，实现加湿空气流动的气体输送设备选型。初步设计出的空气加湿装置通过改变颗粒移动床中颗粒的进料温度和速度，可得到不同湿度的出口空气。本空气加湿装置只是形成设计方案，还有待搭建实验装置验证其性能和进行更深入研究。 31784
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毕业论文关键词 空气加湿 颗粒移动床 颗粒加温加湿 出料机 送料机 气体输送设备
Title The design of Particles humidification system based on vapor compression
Abstract Air humidification technology is an important technology to increase air humidity to reach the requirement of humidification. It is widely used in industrial production and daily life and other fields. A experimental device scheme of air humidification particle moving bed is designed to get the air of different temperature and humidity, first of all is the design of granular moving bed, including the selection of particle, the heat transfer calculation and mass transfer calculation and pressure drop calculation of the fluid - solid complex flow in the particle moving bed, then design the size of the moving bed; Followed the auxiliary equipment selection and design calculations, including the heating and humidifying device of particles, the selection of cutting machine and feeding machine, The selection of the gas conveying equipment that provides flow power to humidified air. By changing the feed temperature and speed of the particles in the particle moving bed, it can get the outlet air of different temperature and humidity. This air humidification device is just a design scheme, and it is still to be set up to verify its performance and to conduct a further research.
Keywords Air humidification, Particle moving bed, The heating and humidifying of particles, Discharging machine, Feeding machine Gas transport equipment
目次
1引言1
1.1背景1
1.2空气加湿研究综述1
1.3颗粒移动床综述2
1.3.1颗粒基本参数2
1.3.2颗粒移动床研究综述3
1.4本文主要工作与设计方法4
2实验系统方案6
2.1实验系统原理6
2.1.1空气加湿原理6
2.1.2颗粒加温加湿原理7
2.2实验系统设计方法7
2.2.1移动床的设计方法8
2.2.2辅助设备选型与计算方法9
3移动床设计10
3.1移动床设计思路10
3.2颗粒的选型11
3.2.1颗粒物性参数取值11
3.2.2设计计算中对颗粒的假设12
3.3水蒸发量计算13
3.4移动床中压降计算13
3.5移动床中传质计算14
3.6移动床中传热计算15
3.6.1移动床中传热模型15
3.6.2移动床中传热分析15
3.6.3移动床中传热简化计算16
3.7移动床计算总结18
4辅助设备设计与选型19
4.1真空泵选型19
4.1.1真空泵类型选择19
4.1.2水环式真空泵型号选择20
4.2出料机与倾斜螺旋输送机选型21
4.2.1螺旋直径的确定21
4.2.2螺旋输送机转速计算22
4.2.3填充系数核算23
4.2.4功率计算及驱动装置选择23
4.2.5确定型号24
4.3颗粒加温加湿系统设计24
4.3.1系统设计思路24
4.3.2水泵的选型24