本文選題：TRNSYS + 地源熱泵　； 參考：《天津大學(xué)》2014年碩士論文

【摘要】：建筑能耗將成為社會最大耗能產(chǎn)業(yè),服務(wù)于建筑的采暖通風(fēng)等運(yùn)行能耗將占整個社會能源消耗的1/3以上。我國能源結(jié)構(gòu)主要以一次能源為主,大量的一次能源消耗造成城市微環(huán)境不斷惡化,尤其最近京津冀地區(qū)霧霾天氣對人體健康的影響更是顯而易見。為此國家十分重視可再生能源的應(yīng)用。其中,淺層地?zé)崮芨且云涮赜械膬?yōu)勢得到國家的大力推廣和扶持。另外,冬季路面積雪結(jié)冰成為北方地區(qū)交通安全出行的重大隱患,常用的除雪方法存在很多弊端和環(huán)境污染問題。本文綜合考慮地源熱泵應(yīng)用過程中出現(xiàn)的熱失衡問題和道路融雪化冰的需求,探索道路融雪化冰-地源熱泵復(fù)合系統(tǒng)運(yùn)行的可行性。論文在搭建的道路太陽能實驗系統(tǒng)上進(jìn)行了道路換熱器換熱實驗研究,分析了下雪天道路換熱的運(yùn)行數(shù)據(jù),確定道路單位面積融雪化冰所需要的熱量。并統(tǒng)計了天津地區(qū)3年間平均每年的下雪天數(shù)。在此基礎(chǔ)上,以天津地區(qū)某建筑為研究對象,利用eQUEST軟件對該建筑進(jìn)行能耗模擬,采用地源熱泵為建筑供冷供熱。在夏季平均冷負(fù)荷是冬季熱負(fù)荷1.3倍的情況下,通過道路融雪化冰來平衡機(jī)組向土壤的排熱量大于從土壤取熱量的不平衡性,理論分析了建筑可匹配的道路融雪化冰面積。進(jìn)而利用TRNSYS模擬軟件對道路融雪化冰-地源熱泵復(fù)合系統(tǒng)的運(yùn)行進(jìn)行了模擬。夏季根據(jù)建筑負(fù)荷的變化,采用地埋管直接供冷和機(jī)組供冷相結(jié)合的運(yùn)行方式,冬季復(fù)合式系統(tǒng)為建筑供熱的同時,在下雪天為路面融雪化冰。模擬結(jié)果顯示夏季結(jié)束時,土壤溫度升高了4.1℃,機(jī)組平均運(yùn)行效率為5.0;冬季供熱結(jié)束時,土壤溫度降低到12.5℃,機(jī)組平均運(yùn)行效率為3.3。而道路融雪化冰出口溫度在4℃左右,高于普通路面溫度,采用乙二醇水溶液做循環(huán)介質(zhì),可以起到融雪化冰的作用。該復(fù)合式系統(tǒng)利用土壤的跨季節(jié)蓄熱,不僅解決了地源熱泵熱失衡問題,同時提高了下雪天道路的安全系數(shù),也有效地節(jié)約了能源。
[Abstract]:Building energy consumption will become the biggest energy consumption industry in the society, and the energy consumption of heating and ventilation will account for more than one-third of the energy consumption of the whole society. Primary energy is the main source of energy in China, and a large amount of primary energy consumption has resulted in the deterioration of urban microenvironment, especially the recent impact of haze weather on human health in Beijing-Tianjin-Hebei region. Therefore, the country attaches great importance to the application of renewable energy. Among them, shallow geothermal energy is due to its unique advantages to be vigorously promoted and supported by the country. In addition, snow icing on road surface in winter has become a major hidden danger for traffic safety travel in northern China. There are many drawbacks and environmental pollution problems in common snow removal methods. Considering the problem of heat imbalance in the application of ground source heat pump (GSHP) and the need of road snow melting and ice melting, the feasibility of road snow melting ice combined with ground source heat pump (GSHP) system is explored in this paper. In this paper, the experimental study of road heat exchanger is carried out on the road solar energy experimental system, and the operation data of road heat transfer in snowy days are analyzed, and the heat needed for snowmelt and ice melting per unit area of road is determined. The average number of snowy days per year in Tianjin is calculated. On this basis, taking a building in Tianjin area as the research object, the energy consumption of the building is simulated by using eQUEST software, and the ground source heat pump is used to supply cooling and heating for the building. Under the condition that the average cooling load in summer is 1.3 times of that in winter, the heat discharge from the unit to the soil is greater than that from the soil by the road melting ice. The theoretical analysis is made on the road melting ice area which can be matched by the building. Furthermore, the operation of road snowmelt ice-ground source heat pump compound system is simulated by TRNSYS software. According to the change of building load in summer, the combined operation mode of direct cooling of buried pipe and unit cooling is adopted. In winter, the composite system provides heating for buildings, and snow-melting and ice-melting on the road surface in snowy days at the same time. The simulation results show that at the end of summer, the soil temperature rises 4.1 鈩，

本文編號：1906619