本文選題：相變蓄能 + 相變蓄冷圍護(hù)結(jié)構(gòu)　； 參考：《天津大學(xué)》2013年博士論文

【摘要】：相變蓄能技術(shù)在建筑中的應(yīng)用，可以減小室內(nèi)熱環(huán)境的波動(dòng)，同時(shí)通過對(duì)過剩熱量/冷量的吸收/釋放可達(dá)到建筑節(jié)能的目的。本文旨在研究一種與建筑圍護(hù)結(jié)構(gòu)結(jié)合的新型相變蓄冷體系：研發(fā)新型的相變材料、封裝方法及與圍護(hù)結(jié)構(gòu)結(jié)合的合理方式，并測(cè)試其實(shí)際的蓄冷效果，最后建立其傳熱模型。 本文采用熔融共混法，以高級(jí)脂肪酸和高碳醇為原料，差示掃描量熱法（DSC）為測(cè)試手段，研制出了一系列具有較高潛熱可適用于我國溫帶大陸季風(fēng)氣候的夏季蓄冷相變材料。研究了以高分子材料為支撐包覆材料、微粒徑鋁粉為導(dǎo)熱系數(shù)增強(qiáng)劑的定型相變材料及其制備方法，而且對(duì)其進(jìn)行了泄露性測(cè)試、SEM微觀形態(tài)特征掃描、紅外波普測(cè)試、DSC相變熱物性測(cè)試，并測(cè)試了添加鋁粉后的蓄放熱效率提高情況。研究分析了另一種封裝方式—相變蓄能板，將相變材料用鋁制板材封裝成堅(jiān)固、安全、無泄漏的板狀結(jié)構(gòu)，且相變蓄能板內(nèi)部帶有肋片，在加固板材的同時(shí)提高了相變材料的吸放熱速率。搭建了空心磚結(jié)構(gòu)的三間大尺寸房間，將相變蓄能板與圍護(hù)結(jié)構(gòu)相結(jié)合，實(shí)驗(yàn)研究了兩套相變蓄冷系統(tǒng)（PCMOW，相變蓄能板與圍護(hù)結(jié)構(gòu)外側(cè)結(jié)合；PCMIW，相變蓄能板與圍護(hù)結(jié)構(gòu)內(nèi)側(cè)結(jié)合）相比較于沒有相變材料的普通房間（Reference）的蓄冷情況，且實(shí)驗(yàn)過程采用三個(gè)操作策略：自然蓄冷策略、夜間自然對(duì)流策略和夜間強(qiáng)制排風(fēng)策略。 對(duì)實(shí)驗(yàn)結(jié)果采用對(duì)比方法進(jìn)行了分析。夜間自然對(duì)流策略和夜間強(qiáng)制排風(fēng)策略運(yùn)行效果要好于自然蓄冷策略；夜間強(qiáng)制排風(fēng)策略的結(jié)果并不優(yōu)于夜間自然對(duì)流策略，而且消耗了排風(fēng)扇的功耗；因此三個(gè)策略中，夜間自然對(duì)流策略最優(yōu)。對(duì)于相變蓄能系統(tǒng)，PCMIW在三個(gè)階段的測(cè)試結(jié)果均優(yōu)于PCMOW，而PCMIW和PCMOW的室內(nèi)溫度都低于Reference。在實(shí)測(cè)數(shù)據(jù)的基礎(chǔ)上，建立了相變圍護(hù)結(jié)構(gòu)的傳熱模型，，并采用相對(duì)誤差分析法及Bland-Altman一致性分析法驗(yàn)證了模型的正確性。
[Abstract]:The application of phase change energy storage technology in building can reduce the fluctuation of indoor thermal environment and achieve the purpose of building energy saving by absorbing / releasing excess heat / cooling capacity.The purpose of this paper is to study a new phase change cold storage system combined with the building envelope structure: to develop new phase change materials, packaging methods and reasonable ways to combine with the envelope structure, to test its actual cold storage effect, and finally to establish its heat transfer model.In this paper, a series of summer cold storage phase change materials with high latent heat can be applied to continental monsoon climate in temperate zone of China have been developed by melt blending method, using high fatty acids and high carbon alcohols as raw materials and differential scanning calorimetry (DSCC) as test means.In this paper, the setting phase change material with polymer material as the supporting coating material and the micro-particle aluminum powder as the thermal conductivity intensifier were studied, and its preparation method was studied, and the SEM microscopic morphology characteristic scanning was carried out.The thermal properties of DSC phase transition were measured by IR wave, and the exothermic efficiency of aluminum powder was also measured.In this paper, another packaging method, the phase change energy storage plate, is studied and analyzed. The phase change material is encapsulated into a solid, safe, leakless plate structure with aluminum plate, and there is a rib inside the phase change energy storage plate.The heat absorption and exothermic rate of the phase change material is increased while the plate is strengthened.Three large rooms with hollow brick structure were built, and the phase change energy storage plate was combined with the envelope structure.Two sets of PCMOW, PCMW, PCMIW, PCMIW, PCMIW and PCMIW, compared with normal room without phase change material (PCMOW), have been studied experimentally in this paper, and the cold storage conditions of PCMOW, PCMIW and PCMIW are compared with those of normal room without phase change material (PCMOW).During the experiment, three strategies were used: natural cold storage strategy, night natural convection strategy and night forced ventilation strategy.The experimental results are analyzed by contrast method.The effect of night natural convection strategy and night forced ventilation strategy is better than that of natural cold storage strategy. The result of night forced ventilation strategy is not better than that of night natural convection strategy and consumes the power consumption of exhaust fan.The night natural convection strategy is optimal.The results of PCMIW are better than that of PCMOW in three stages, and the indoor temperature of PCMIW and PCMOW are lower than that of reference.Based on the measured data, the heat transfer model of phase change envelope is established, and the correctness of the model is verified by relative error analysis and Bland-Altman consistency analysis.
【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2013
【分類號(hào)】：TU111.4

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