本文關(guān)鍵詞： 反射隔熱涂料 建筑外墻 太陽(yáng)輻射吸收系數(shù) 能耗模擬 節(jié)能效果　出處：《浙江大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：建筑用反射隔熱涂料能反射大部分太陽(yáng)光,達(dá)到隔熱降溫的目的,有效降低夏季空調(diào)能耗,然而冬季會(huì)增大采曖能耗。目前反射隔熱涂料的研究主要側(cè)重于產(chǎn)品本身,特別是反射率和發(fā)射率指標(biāo),但如何與節(jié)能效果形成直接關(guān)聯(lián)研究較少,也不明確,尤其是針對(duì)夏熱冬冷地區(qū)更為突出。至今尚無(wú)系統(tǒng)可行的建筑用反射隔熱涂料節(jié)能效果評(píng)估方法,使節(jié)能驗(yàn)收和市場(chǎng)推廣受到很大影響。因此,對(duì)反射隔熱涂料全年能耗研究及節(jié)能效果評(píng)估方法的研究具有重要的意義。 對(duì)此,本文通過(guò)對(duì)太陽(yáng)輻射模型和建筑外表面熱作用分析相結(jié)合,闡述了建筑用反射隔熱涂料的隔熱機(jī)理,提出太陽(yáng)輻射吸收系數(shù)是表征其熱工性能的有效參數(shù),并為反射隔熱涂料的采暖空調(diào)能耗模擬和節(jié)能效果評(píng)估提供了理論支持。 通過(guò)采暖空調(diào)能耗影響因素模擬分析,發(fā)現(xiàn)采暖期室內(nèi)設(shè)計(jì)溫度,采暖期、空調(diào)期計(jì)算期的劃分,用能模式對(duì)能耗影響較大,為合理評(píng)估反射隔熱涂料的節(jié)能效果,需分別計(jì)算不同條件下反射隔熱涂料的節(jié)能率。通過(guò)對(duì)外墻外表面太陽(yáng)輻射吸收系數(shù)為0.1-0.9的建筑能耗模擬分析,建立了太陽(yáng)輻射吸收系數(shù)與采暖能耗、空調(diào)能耗、全年能耗及全年節(jié)能率的回歸方程。并通過(guò)DeST模擬計(jì)算了外墻使用反射隔熱涂料和普通飾面的采暖空調(diào)能耗,得到反射隔熱涂料相對(duì)普通飾面的全年節(jié)能率,結(jié)果表明：按照節(jié)能設(shè)計(jì)標(biāo)準(zhǔn),反射隔熱涂料的全年節(jié)能率0,表現(xiàn)為反節(jié)能；當(dāng)以節(jié)能設(shè)計(jì)標(biāo)準(zhǔn)為基礎(chǔ),對(duì)采暖期室內(nèi)設(shè)計(jì)溫度進(jìn)行調(diào)整,分別從18℃降至16℃、14℃、12℃,反射隔熱涂料的全年節(jié)能率0,分別約為0.2%、0.9%、2%,節(jié)能率逐漸增大；在16℃基礎(chǔ)上,繼續(xù)調(diào)整采暖期、空調(diào)期的計(jì)算期,分別以浙江省北區(qū)氣候區(qū)、浙江省氣候數(shù)據(jù)調(diào)研結(jié)果、浙江省南區(qū)氣候區(qū)所劃分的采暖空調(diào)計(jì)算期為基礎(chǔ),由此得出反射隔熱涂料全年節(jié)能率分別約為0.9%、2.6%、3.8%,隨著采暖空調(diào)計(jì)算期的調(diào)整,尤其是采暖期計(jì)算期縮短幅度的增大,反射隔熱涂料表現(xiàn)出越來(lái)越明顯的節(jié)能效果；在此基礎(chǔ)上,繼續(xù)對(duì)用能模式進(jìn)行調(diào)整,采用間歇式用能,反射隔熱涂料全年節(jié)能率分別約為1.7%、3.8%、6.4%；反射隔熱涂料節(jié)能效果的評(píng)估,需結(jié)合各地氣候參數(shù),合理設(shè)置采暖期室內(nèi)設(shè)計(jì)溫度,采暖期、空調(diào)期計(jì)算期及用能模式。 另外,通過(guò)熱箱試驗(yàn),測(cè)試計(jì)算反射隔熱涂料的隔熱溫差和等效熱阻,并對(duì)該試驗(yàn)方法和評(píng)估指標(biāo)進(jìn)行了探討。指出由于模擬光源與太陽(yáng)光光譜相差較大,熱箱法所測(cè)隔熱溫差并不代表反射隔熱涂料實(shí)際的隔熱效果,該測(cè)試方法有待改進(jìn)；且用等效熱阻表征反射隔熱涂料的熱工性能與原理不符,等效熱阻的計(jì)算方法及概念的合理性還有待于進(jìn)一步研究和探討。
[Abstract]:Architectural reflective heat insulation coating can reflect most of the sunlight, achieve the purpose of heat insulation and cooling, and effectively reduce the energy consumption of air conditioning in summer. However, heating energy consumption will be increased in winter. At present, the research of reflective and thermal insulation coatings mainly focuses on the product itself, especially the reflectivity and emissivity index, but how to form a direct correlation with the energy saving effect is less and unclear. Especially for the hot summer and cold winter area more prominent. So far there is no systematic and feasible evaluation method of energy efficiency of architectural reflective and thermal insulation coatings, which greatly affects the acceptance of energy conservation and market promotion. It is of great significance to study the annual energy consumption and energy efficiency evaluation of reflective heat insulation coatings. In this paper, the thermal insulation mechanism of architectural reflective heat insulation coatings is expounded by combining the solar radiation model with the analysis of thermal action on the outer surface of buildings. Solar radiation absorption coefficient is an effective parameter to characterize its thermal performance and provides theoretical support for energy consumption simulation and energy saving effect evaluation of heating and air conditioning with reflective heat insulation coating. Through the simulation analysis of the influencing factors of heating air conditioning energy consumption, it is found that the division of indoor design temperature, heating period and calculation period of air conditioning period during heating period, and the energy use mode have great influence on energy consumption. In order to evaluate the energy saving effect of reflective heat insulation coating reasonably. It is necessary to calculate the energy saving rate of reflective heat insulation coatings under different conditions, and to simulate the energy consumption of buildings whose solar radiation absorption coefficient is 0.1-0.9 on the outer surface of external wall. Solar radiation absorption coefficient, heating energy consumption and air conditioning energy consumption are established. Regression equation of annual energy consumption and annual energy saving rate. The heating and air conditioning energy consumption of external wall using reflective heat insulation coating and general decoration was calculated by DeST simulation. The annual energy saving rate of reflective heat insulation coating is obtained. The results show that according to the energy saving design standard, the annual energy saving rate of reflective heat insulation coating is 0, which is shown as inverse energy saving. When the indoor design temperature is adjusted from 18 鈩，

本文編號(hào)：1471698