本文選題：熱壓通風(fēng)　切入點(diǎn)：地道風(fēng)系統(tǒng)(EAHEs)　出處：《重慶大學(xué)》2016年碩士論文

【摘要】：自然通風(fēng)作為一種簡(jiǎn)單且有效的通風(fēng)調(diào)節(jié)方式早在幾千年前就已經(jīng)在世界各地被廣泛應(yīng)用,但是其調(diào)節(jié)效果受制于室外熱環(huán)境。隨著現(xiàn)代暖通空調(diào)技術(shù)的發(fā)展,大量的空調(diào)設(shè)施層出不窮,人們開始主動(dòng)的調(diào)節(jié)室內(nèi)熱環(huán)境,與此同時(shí)也加劇了能源消耗和環(huán)境問(wèn)題。面對(duì)日益凸顯的高能耗問(wèn)題,發(fā)展綠色節(jié)能技術(shù),實(shí)現(xiàn)可持續(xù)發(fā)展已經(jīng)成為當(dāng)今社會(huì)乃至國(guó)家所關(guān)注的重要課題。由此,自然通風(fēng)以及相應(yīng)的復(fù)合式系統(tǒng)作為節(jié)能、環(huán)保且經(jīng)濟(jì)的通風(fēng)形式再次被各國(guó)學(xué)者所重視。地道風(fēng)系統(tǒng)(EAHEs)是一種比較典型的復(fù)合式通風(fēng)系統(tǒng)形式,通過(guò)熱壓誘導(dǎo)自然通風(fēng)或者機(jī)械通風(fēng)的方式將室外空氣引入地道,進(jìn)而改善室內(nèi)的熱濕環(huán)境。其中自然通風(fēng)與地道風(fēng)技術(shù)的結(jié)合則充分發(fā)揮了兩者的優(yōu)勢(shì),實(shí)現(xiàn)了節(jié)能環(huán)�？沙掷m(xù)發(fā)展。然而針對(duì)這種將地上建筑與地道系統(tǒng)耦合在一起進(jìn)行分析的理論模型則相對(duì)較少,尤其是地道風(fēng)系統(tǒng)中通過(guò)熱壓誘導(dǎo)自然通風(fēng)方式提供驅(qū)動(dòng)力的耦合通風(fēng)換熱理論模型。本文首先基于波動(dòng)理論的假設(shè),認(rèn)為建筑熱壓耦合通風(fēng)換熱模式下室內(nèi)熱環(huán)境的參數(shù)存在非簡(jiǎn)諧多頻波動(dòng)現(xiàn)象。在室內(nèi)溫度始終大于等于室外溫度時(shí),即0(t)(t)iT?T的工況下,根據(jù)傅里葉變換理論,對(duì)單體建筑熱壓通風(fēng)與蓄熱非線性耦合理論進(jìn)行了分析推導(dǎo),將復(fù)雜的非線性耦合問(wèn)題線性化,以解析表達(dá)式的形式得出室內(nèi)空氣溫度、通風(fēng)量與建筑結(jié)構(gòu)尺寸、蓄熱體量及負(fù)荷大小的關(guān)系,使得計(jì)算更加簡(jiǎn)便有效。然后搭建小尺寸單區(qū)兩開口建筑自然通風(fēng)模型實(shí)驗(yàn)臺(tái),在周期性波動(dòng)的室外熱環(huán)境下,將監(jiān)測(cè)得到的實(shí)驗(yàn)數(shù)據(jù)與理論模型進(jìn)行對(duì)比分析,驗(yàn)證了在0(t)(t)iT?T的工況下非穩(wěn)態(tài)建筑自然通風(fēng)與蓄熱非線性耦合理論模型的準(zhǔn)確性。同時(shí)也證實(shí)了建筑自然通風(fēng)與蓄熱非線性耦合現(xiàn)象中非簡(jiǎn)諧多頻波存在的可能性。其次針對(duì)地道內(nèi)土壤滲透半徑的問(wèn)題,提出一種周期性波動(dòng)熱環(huán)境下評(píng)價(jià)地道風(fēng)系統(tǒng)換熱性能的分析模型。通過(guò)引入“過(guò)余波動(dòng)溫度”的概念來(lái)分析地道與土壤之間溫度波動(dòng)的交互作用,從而得出年、日周期下地道內(nèi)空氣溫度振幅和相位的解析式,使得地道風(fēng)系統(tǒng)換熱分析過(guò)程更加簡(jiǎn)單和高效。最后將地道系統(tǒng)與地上建筑耦合在一起進(jìn)行分析,在0(t)(t)iT?T的工況下,得出室內(nèi)空氣溫度和通風(fēng)量的顯式表達(dá)式。然后利用CFD仿真工具模擬周期性非穩(wěn)態(tài)下土壤換熱器耦合熱壓通風(fēng)過(guò)程,同時(shí)將數(shù)值模擬結(jié)果與數(shù)學(xué)模型進(jìn)行了對(duì)比分析,驗(yàn)證了模型的準(zhǔn)確性,為實(shí)際工程設(shè)計(jì)提供了更為準(zhǔn)確和簡(jiǎn)便的處理方法。
[Abstract]:Natural ventilation, as a simple and effective way to regulate ventilation, has been widely used in many parts of the world thousands of years ago, but its effect is limited by the outdoor thermal environment. With the development of modern HVAC technology, natural ventilation has been widely used in many parts of the world. A large number of air-conditioning facilities emerge in endlessly, people begin to regulate indoor thermal environment actively, at the same time, it also exacerbates the energy consumption and environmental problems. Facing the increasingly prominent problem of high energy consumption, the development of green energy-saving technology, The realization of sustainable development has become an important issue that the society and even the country have paid close attention to. As a result, natural ventilation and the corresponding compound system are used as energy saving. The environmental protection and economic ventilation form is paid more attention to by scholars from all over the world. EAHEs is a typical composite ventilation system which introduces outdoor air into tunnels by means of natural ventilation or mechanical ventilation induced by hot pressure. The combination of natural ventilation and underground wind technology gives full play to the advantages of both. The energy saving and environmental protection sustainable development has been realized. However, there are relatively few theoretical models for the analysis of the above ground building and tunnel system. In particular, the coupled ventilation heat transfer model in tunnel wind system, which provides driving force through hot pressure-induced natural ventilation, is first based on the assumption of wave theory. It is considered that there is a non-harmonic multi-frequency fluctuation phenomenon in the indoor thermal environment parameters under the heat transfer mode of coupled thermal pressure ventilation. When the indoor temperature is always greater than or equal to the outdoor temperature, that is, the temperature of the indoor thermal environment is 0? On the basis of Fourier transform theory, the nonlinear coupling theory of thermal pressure ventilation and heat storage in single building is analyzed and deduced. The complex nonlinear coupling problem is linearized, and the indoor air temperature is obtained by analytical expression. The relationship between ventilation volume and the size of building structure, heat storage volume and load makes the calculation more convenient and effective. Then, the experimental bench of natural ventilation model of small size, single area and two openings is built, which can be used in outdoor thermal environment with periodic fluctuation. The experimental data obtained from the monitoring are compared with the theoretical model, and the experimental data are compared with the theoretical model. The accuracy of the nonlinear coupling model of natural ventilation and heat storage in unsteady buildings under the condition of T. the possibility of non-harmonic multifrequency wave in the nonlinear coupling of natural ventilation and heat storage in buildings is also confirmed. The problem of soil penetration radius in tunnels, This paper presents an analytical model for evaluating the heat transfer performance of wind system in a periodically fluctuating thermal environment. By introducing the concept of "excess fluctuation temperature", the interaction between tunnel and soil temperature fluctuation is analyzed, and the year is obtained. The analytical expressions of the amplitude and phase of air temperature in the tunnel under the daily cycle make the heat transfer analysis process of the tunnel wind system simpler and more efficient. Finally, the tunnel system is coupled with the above ground building to analyze the temperature amplitude and phase of the air in the tunnel. The explicit expressions of indoor air temperature and ventilation rate are obtained under the condition of T, and then the coupled hot pressure ventilation process of soil heat exchanger under periodic unsteady condition is simulated by CFD simulation tool. At the same time, the numerical simulation results are compared with the mathematical model, which verifies the accuracy of the model, and provides a more accurate and simple processing method for practical engineering design.
【學(xué)位授予單位】：重慶大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TU834

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1 郭源浩;熱壓與空氣—土壤換熱器（EAHE）耦合通風(fēng)換熱理論模型研究[D];重慶大學(xué);2016年

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本文編號(hào)：1659893