本文選題：太陽能采暖系統(tǒng) + 相變蓄能��； 參考：《沈陽建筑大學(xué)》2014年碩士論文

【摘要】：在寒冷的北方農(nóng)村地區(qū),火炕作為主要的采暖設(shè)施,而傳統(tǒng)單一的火炕熱效率低、燃料消耗量大,已不能滿足人們對室內(nèi)熱環(huán)境的需求。因此,本文提出了一種新型的采暖系統(tǒng)與農(nóng)居火炕相結(jié)合,即將相變蓄能技術(shù)與毛細(xì)管網(wǎng)型太陽能采暖技術(shù)相結(jié)合運(yùn)用在火炕上,為提高室內(nèi)舒適度、降低能耗和改善室內(nèi)熱環(huán)境提供了一種有效的途徑。本文對我國北方農(nóng)村火炕的結(jié)構(gòu)及工作原理進(jìn)行了研究和分析,并詳細(xì)地論述了火炕的評價(jià)指標(biāo)。通過參考太陽能采暖系統(tǒng)設(shè)計(jì)規(guī)范,確定了太陽能采暖系統(tǒng)的設(shè)計(jì)方案。采用太陽能供暖,在技術(shù)、經(jīng)濟(jì)、環(huán)保等方面都具有顯著的優(yōu)勢和競爭力,大大改善了農(nóng)居室內(nèi)的熱環(huán)境。相變材料是利用相變過程中吸熱和放熱的性質(zhì)來進(jìn)行蓄熱的物質(zhì),具有蓄熱密度大,傳熱溫差小、換熱效率高等優(yōu)點(diǎn),在時(shí)間和空間上實(shí)現(xiàn)了能量的轉(zhuǎn)移,對建筑物的供暖起到了削峰填谷的作用。本文對相變傳熱的特點(diǎn)、相變傳熱數(shù)學(xué)模型的建立和相變傳熱的求解方法都做了相應(yīng)的介紹,同時(shí)對相變材料的選取、相變材料的封裝以及如何與炕體良好的結(jié)合作了深入的研究和分析,提出了一套適合于農(nóng)村采暖的相變蓄熱火炕的設(shè)計(jì)方案。通過在理論分析的基礎(chǔ)上與實(shí)際相結(jié)合,對相變蓄能火炕聯(lián)合毛細(xì)管網(wǎng)型太陽能供暖系統(tǒng)進(jìn)行了實(shí)驗(yàn)研究。主要對實(shí)驗(yàn)臺(tái)的搭建過程、實(shí)驗(yàn)方案的設(shè)計(jì)和實(shí)驗(yàn)的測試進(jìn)行了詳細(xì)的論述。通過對不同工況下房間和炕面溫度分布情況的對比分析得出實(shí)驗(yàn)結(jié)論。研究表明：相變材料火炕聯(lián)合毛細(xì)管網(wǎng)型太陽能系統(tǒng)的采暖效果最好,室內(nèi)以及炕面的舒適度最高。該系統(tǒng)室內(nèi)的平均溫度為24.41℃,比普通房間高14.31℃；炕面溫度波動(dòng)小,分布較均勻,溫差最大處僅為3℃；夜間炕面溫度下降緩慢,炕面平均溫度高于普通火炕炕面的平均溫度。該系統(tǒng)的熱工性、蓄熱性、散熱性優(yōu)于普通火炕�；趯�(shí)驗(yàn)測得的數(shù)據(jù),利用FLUENT模擬軟件進(jìn)行模擬,對模擬過程中模型的建立、網(wǎng)格的劃分和FLUENT計(jì)算參數(shù)的設(shè)置進(jìn)行分析,并對模擬結(jié)果與實(shí)驗(yàn)所測的結(jié)果作對比研究。研究表明：模擬結(jié)果與實(shí)測值基本吻合,驗(yàn)證了采用FLUENT模擬室內(nèi)熱環(huán)境的可行性,為改善農(nóng)居室內(nèi)的熱環(huán)境提供了研究手段。本文以實(shí)驗(yàn)測試數(shù)據(jù)為基礎(chǔ),對相變蓄能火炕聯(lián)合毛細(xì)管網(wǎng)型太陽能采暖系統(tǒng)的能耗情況、節(jié)能性和經(jīng)濟(jì)性等方面進(jìn)行了綜合評價(jià)。研究得到：該系統(tǒng)一年可節(jié)約能量14056.24MJ,在其壽命周期內(nèi)可節(jié)省20539.86元,并且投入使用后3.05年可收回成本。同時(shí)對比分析了四種不同工況下火炕的熱工性、炕體的散熱性和室內(nèi)熱環(huán)境,全面研究相變蓄能火炕聯(lián)合毛細(xì)管網(wǎng)型太陽能采暖系統(tǒng)的性能和采暖效果,為該系統(tǒng)在農(nóng)村的發(fā)展提供理論支撐。
[Abstract]:As the main heating facilities in the cold rural areas of northern China, the traditional single Kang has low thermal efficiency and large fuel consumption, which can not meet the needs of the indoor thermal environment. Therefore, a new type of heating system is proposed in this paper, which is the combination of phase change energy storage technology and capillary net solar heating technology, in order to improve indoor comfort. It provides an effective way to reduce energy consumption and improve indoor thermal environment. In this paper, the structure and working principle of fire Kang in rural areas of northern China are studied and analyzed, and the evaluation index of fire Kang is discussed in detail. By referring to the design specification of solar heating system, the design scheme of solar heating system is determined. Solar heating has obvious advantages and competitiveness in technology, economy and environmental protection, which greatly improves the thermal environment in agricultural rooms. Phase change material (PCM) is a kind of material which uses the properties of endothermic and exothermic in the process of phase transformation to store heat. It has the advantages of high density of heat storage, small difference of heat transfer temperature, high efficiency of heat transfer, etc., and the transfer of energy is realized in time and space. The heating of the building played a role in cutting the peak and filling the valley. In this paper, the characteristics of phase change heat transfer, the establishment of mathematical model of phase change heat transfer and the solution method of phase change heat transfer are all introduced. At the same time, the selection of phase change material is also given. The encapsulation of phase change material and how to combine it with Kang body are studied and analyzed deeply, and a design scheme of phase change heat storage Kang suitable for rural heating is put forward. Based on the theoretical analysis and the practice, the experimental study on the phase change energy storage Kang combined with capillary net solar heating system was carried out. The construction process, the design of experimental scheme and the test of experiment are discussed in detail. The experimental results are obtained by comparing and analyzing the temperature distribution of room and Kang under different working conditions. The results show that the heating effect of the phase change material Kang combined with capillary net solar system is the best, and the indoor and the comfort of the Kang surface is the highest. The average indoor temperature of the system is 24.41 鈩，

本文編號(hào)：1926954