本文關(guān)鍵詞：太陽(yáng)能熱水和熱泵復(fù)合熱源的輻射供暖系統(tǒng)的優(yōu)化設(shè)計(jì)研究　出處：《東南大學(xué)》2015年碩士論文　論文類(lèi)型：學(xué)位論文

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【摘要】：為滿足我國(guó)生態(tài)文明建設(shè)的發(fā)展需求,本文研究了一種采用太陽(yáng)能和熱泵作為熱源的建筑輻射供暖系統(tǒng),以南京地區(qū)的一棟供暖面積為335.740m2的三層別墅型住宅建筑為研究對(duì)象,通過(guò)系統(tǒng)建模和模擬分析的方法展開(kāi)研究工作,主要研究成果包括以下五個(gè)方面：1、利用DeST軟件模擬建筑逐時(shí)負(fù)荷,得到供暖期的建筑總能耗為65047.869MJ。設(shè)計(jì)采用舒適、節(jié)能環(huán)保的太陽(yáng)能熱水和熱泵復(fù)合熱源的輻射供暖系統(tǒng),對(duì)系統(tǒng)中的太陽(yáng)能集熱器、蓄熱水箱和空氣源熱泵進(jìn)行理論分析和數(shù)學(xué)模型建立,并對(duì)部分設(shè)備進(jìn)行了選型。2、根據(jù)理論計(jì)算模型得出7組典型設(shè)計(jì)參數(shù),以蓄熱水箱體積與集熱面積的比值(VAR)表示分別為0.027m,0.033m,0.041m,0.053m,0.073m,0.115m和0.235m。3、利用TRNSYS軟件建立系統(tǒng)模型,根據(jù)以上7組參數(shù)進(jìn)行系統(tǒng)模擬研究,結(jié)果顯示：VAR在0.027-0.235m范圍內(nèi)變化時(shí),平均集熱效率在0.373～0.488之間,日平均有效集熱量在278.996-295.506MJ之間,供暖期熱泵的耗電量在2718～2905kWh之間。4、根據(jù)TRNSYS軟件模擬結(jié)果,優(yōu)化研究太陽(yáng)能集熱系統(tǒng)的集熱面積、蓄熱水箱體積和集熱溫度。從系統(tǒng)投資(費(fèi)用年值法)、蓄熱水箱中水溫的變化情況以及太陽(yáng)能保證率方面研究,結(jié)果表明：VAR在0.053～0.073m范圍內(nèi)時(shí),系統(tǒng)費(fèi)用年值較低,此時(shí)集熱過(guò)程中蓄熱水箱內(nèi)的平均水溫可達(dá)42y47℃,能夠滿足輻射末端供水溫度的要求,供暖期太陽(yáng)能保證率在53.258%左右,VAR的變化對(duì)系統(tǒng)的太陽(yáng)能保證率影響小于5.750%。設(shè)計(jì)研究以VAR=0.053m為例,Ac=64m2,Vw=3.403m3,建筑供暖面積與集熱面積的比值為5.2：1,供暖期的太陽(yáng)能保證率為53.104%。5、根據(jù)優(yōu)化后的設(shè)計(jì)參數(shù)從經(jīng)濟(jì)效益、節(jié)能環(huán)保效益方面,對(duì)太陽(yáng)能熱水和熱泵復(fù)合熱源的供暖系統(tǒng)與燃油鍋爐、燃?xì)忮仩t、電輔助太陽(yáng)能供暖系統(tǒng)進(jìn)行對(duì)比分析。結(jié)果顯示：太陽(yáng)能熱水和熱泵復(fù)合熱源的供暖方案的費(fèi)用年值最低,為10246元／年,且該系統(tǒng)每年可節(jié)省標(biāo)準(zhǔn)煤為2.555噸,二氧化碳減排量為6.801噸。本文模擬研究了太陽(yáng)能熱水和熱泵復(fù)合熱源的供暖系統(tǒng)的運(yùn)行和應(yīng)用特性,對(duì)南京地區(qū)太陽(yáng)能供暖系統(tǒng)設(shè)計(jì)和設(shè)備選型具有借鑒作用。
[Abstract]:In order to meet the development needs of ecological civilization construction in China, this paper studies a building radiation heating system using solar energy and heat pump as heat source. Taking a three-story villa residential building with a heating area of 335.740m2 in Nanjing area as the research object, the research work is carried out through the method of system modeling and simulation analysis. The main research results include the following five aspects: 1, using DeST software to simulate the hourly load of buildings, the total energy consumption in heating period is 65047.869 MJ. the design is comfortable. The solar energy collector, storage tank and air source heat pump in the system are analyzed theoretically and the mathematical model is established for the radiation heating system of solar water heating and heat pump combined with heat pump with energy saving and environmental protection. According to the theoretical calculation model, 7 groups of typical design parameters are obtained, which are expressed as 0.027 m by the ratio of the volume of storage tank to the area of collecting heat. The system model was established by using TRNSYS software. According to the system simulation of the above 7 groups of parameters, the results show that the average heat collection efficiency is between 0.373 and 0.488 when the VAR varies in the range of 0.027-0.235m. The average daily effective heat collection is between 278.996-295.506MJ, and the energy consumption of heat pump during heating period is between 27185kWh and 2905kWh. According to the simulation results of TRNSYS software, the area of solar energy collector, the volume of storage tank and the collection temperature are optimized. The variation of water temperature in the storage tank and the solar energy guarantee rate are studied. The results show that the annual cost of the system is lower when the VAR is within the range of 0.053 ~ 0.073 m. At this time, the average water temperature in the storage tank can reach 42 y47 鈩，

本文編號(hào)：1414123