【摘要】：除濕已經(jīng)用于諸多領(lǐng)域，然而傳統(tǒng)的壓縮式除濕設(shè)備體積和噪聲都很大，并且對環(huán)境有危害，而熱電除濕技術(shù)因其無噪聲、體積小以及對環(huán)境友好，可與太陽能結(jié)合利用等優(yōu)點(diǎn)使其非常適合于小空間的除濕領(lǐng)域。 熱電除濕系統(tǒng)是一個涉及電量、熱量、質(zhì)量和時間的多物理量相關(guān)的系統(tǒng)，要想同時進(jìn)行模擬研究較為困難。本研究提出了一個模型，能夠?qū)犭姵凉裣到y(tǒng)進(jìn)行模擬研究。根據(jù)熱電制冷的原理建立了系統(tǒng)中熱電模塊的數(shù)學(xué)模型；然后提出了一種根據(jù)熱沉的結(jié)構(gòu)參數(shù)來計算熱沉熱阻的方法；通過分析冷端熱沉表面的除濕過程，指出除濕過程中的動力就是入口空氣狀態(tài)的含濕量與冷端熱沉表面飽和空氣層的含濕量之差，從而建立了冷卻除濕過程中的數(shù)學(xué)模型。依據(jù)類比原理將熱學(xué)變量中的熱阻、溫度和熱容等與電學(xué)變量中的電阻、電壓和電容等進(jìn)行類比，以及將含濕量類比為電學(xué)變量中的電壓，傳質(zhì)過程中的阻力類比為了電路中的電阻，利用電路分析軟件建立了熱電除濕系統(tǒng)中各個過程的等效電路模型。 應(yīng)用建立的等效電路模型對影響熱電除濕系統(tǒng)工作狀態(tài)的因素等進(jìn)行了研究和分析。分析了熱沉熱阻隨風(fēng)扇風(fēng)量、熱沉的結(jié)構(gòu)的變化關(guān)系，確定了一種結(jié)構(gòu)能夠使熱電除濕系統(tǒng)的除濕速率較大；而后在確定熱沉的結(jié)構(gòu)的情況下，，研究了該熱電除濕系統(tǒng)在不同環(huán)境溫濕度下的變化關(guān)系；最后得到了該熱電除濕系統(tǒng)在27℃，相對濕度為80%的環(huán)境條件下，系統(tǒng)COP和除濕速率隨電流的變化關(guān)系，找到了該熱電除濕系統(tǒng)的工作狀態(tài)。該模型的應(yīng)用可為熱電除濕裝置的設(shè)計和應(yīng)用提供一定的指導(dǎo)意義。
[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

本文編號：2452230