基于类比原理的热电除湿系统的研究
发布时间：2019-04-02 04:17
【摘要】：除湿已经用于诸多领域，然而传统的压缩式除湿设备体积和噪声都很大，并且对环境有危害，而热电除湿技术因其无噪声、体积小以及对环境友好，可与太阳能结合利用等优点使其非常适合于小空间的除湿领域。 热电除湿系统是一个涉及电量、热量、质量和时间的多物理量相关的系统，要想同时进行模拟研究较为困难。本研究提出了一个模型，能够对热电除湿系统进行模拟研究。根据热电制冷的原理建立了系统中热电模块的数学模型；然后提出了一种根据热沉的结构参数来计算热沉热阻的方法；通过分析冷端热沉表面的除湿过程，指出除湿过程中的动力就是入口空气状态的含湿量与冷端热沉表面饱和空气层的含湿量之差，从而建立了冷却除湿过程中的数学模型。依据类比原理将热学变量中的热阻、温度和热容等与电学变量中的电阻、电压和电容等进行类比，以及将含湿量类比为电学变量中的电压，传质过程中的阻力类比为了电路中的电阻，利用电路分析软件建立了热电除湿系统中各个过程的等效电路模型。 应用建立的等效电路模型对影响热电除湿系统工作状态的因素等进行了研究和分析。分析了热沉热阻随风扇风量、热沉的结构的变化关系，确定了一种结构能够使热电除湿系统的除湿速率较大；而后在确定热沉的结构的情况下，，研究了该热电除湿系统在不同环境温湿度下的变化关系；最后得到了该热电除湿系统在27℃，相对湿度为80%的环境条件下，系统COP和除湿速率随电流的变化关系，找到了该热电除湿系统的工作状态。该模型的应用可为热电除湿装置的设计和应用提供一定的指导意义。
[Abstract]:Dehumidification has been used in many fields, however, the traditional compression dehumidification equipment is very large in volume and noise, and harmful to the environment. However, thermoelectric dehumidification technology is environmentally friendly because of its noise-free, small volume and environmental friendliness. It can be combined with solar energy and other advantages make it very suitable for small space in the field of dehumidification. Thermoelectric dehumidification system is a multi-physical quantity-dependent system involving electricity, heat, quality and time. It is difficult to carry out simulation research at the same time. In this study, a model is proposed, which can be used to simulate the thermoelectric dehumidification system. According to the principle of thermoelectric refrigeration, the mathematical model of the thermoelectric module in the system is established, and then a method to calculate the heat sink resistance according to the structural parameters of the heat sink is proposed. By analyzing the dehumidification process of the cold end heat sink surface, it is pointed out that the power of the dehumidification process is the difference between the moisture content of the inlet air state and the saturated air layer of the cold end heat sink surface, thus establishing the mathematical model of the cooling dehumidification process. According to the analogy principle, the thermal resistance, temperature and heat capacity in the thermal variable are compared with the resistance, voltage and capacitance in the electrical variable, and the moisture content is compared to the voltage in the electrical variable. Resistance analogy in mass transfer process for resistance in circuit, the equivalent circuit model of each process in thermoelectric dehumidification system is established by using circuit analysis software. The factors affecting the working state of thermoelectric dehumidification system are studied and analyzed by using the established equivalent circuit model. The relationship between the heat sink resistance and the wind fan air volume and the structure of the heat sink is analyzed, and a kind of structure is determined to make the dehumidification rate of the thermoelectric dehumidification system larger. Then under the condition of determining the structure of heat sink, the variation relationship of the thermoelectric dehumidification system under different environment temperature and humidity is studied. Finally, the relationship between COP and dehumidification rate with current is obtained under the ambient conditions of 27 鈩
本文编号：2452230
[Abstract]:Dehumidification has been used in many fields, however, the traditional compression dehumidification equipment is very large in volume and noise, and harmful to the environment. However, thermoelectric dehumidification technology is environmentally friendly because of its noise-free, small volume and environmental friendliness. It can be combined with solar energy and other advantages make it very suitable for small space in the field of dehumidification. Thermoelectric dehumidification system is a multi-physical quantity-dependent system involving electricity, heat, quality and time. It is difficult to carry out simulation research at the same time. In this study, a model is proposed, which can be used to simulate the thermoelectric dehumidification system. According to the principle of thermoelectric refrigeration, the mathematical model of the thermoelectric module in the system is established, and then a method to calculate the heat sink resistance according to the structural parameters of the heat sink is proposed. By analyzing the dehumidification process of the cold end heat sink surface, it is pointed out that the power of the dehumidification process is the difference between the moisture content of the inlet air state and the saturated air layer of the cold end heat sink surface, thus establishing the mathematical model of the cooling dehumidification process. According to the analogy principle, the thermal resistance, temperature and heat capacity in the thermal variable are compared with the resistance, voltage and capacitance in the electrical variable, and the moisture content is compared to the voltage in the electrical variable. Resistance analogy in mass transfer process for resistance in circuit, the equivalent circuit model of each process in thermoelectric dehumidification system is established by using circuit analysis software. The factors affecting the working state of thermoelectric dehumidification system are studied and analyzed by using the established equivalent circuit model. The relationship between the heat sink resistance and the wind fan air volume and the structure of the heat sink is analyzed, and a kind of structure is determined to make the dehumidification rate of the thermoelectric dehumidification system larger. Then under the condition of determining the structure of heat sink, the variation relationship of the thermoelectric dehumidification system under different environment temperature and humidity is studied. Finally, the relationship between COP and dehumidification rate with current is obtained under the ambient conditions of 27 鈩
本文编号：2452230
本文链接：https://www.wllwen.com/guanlilunwen/gongchengguanli/2452230.html
