本文關(guān)鍵詞： 太陽能 土壤源熱泵 保證率 敏感性分析 TRNSYS　出處：《大連理工大學(xué)》2013年碩士論文　論文類型：學(xué)位論文

【摘要】：社會經(jīng)濟飛速發(fā)展,能源卻逐漸衰竭。為促進經(jīng)濟可持續(xù)發(fā)展,推進節(jié)能減排政策,提倡開發(fā)新能源和可再生能源等方針勢在必行。由于利用了太陽能和淺層地?zé)崮苓@兩種儲量豐富且易于收集的清潔可再生能源,太陽能-土壤源(Solar Assisted Ground-source,簡稱SAGS)熱泵系統(tǒng)在節(jié)能環(huán)保方面具有其它供冷熱系統(tǒng)無法比擬的優(yōu)勢。太陽能保證率體現(xiàn)了系統(tǒng)太陽能熱利用程度,是太陽能-土壤源熱泵系統(tǒng)重要的設(shè)計參數(shù)。受地理、氣候、負荷特性等因素影響,太陽能保證率最佳值涉及問題復(fù)雜,研究難度大,目前國內(nèi)外對該問題的研究相對不足。鑒于此,本研究采用實驗研究和模擬分析相結(jié)合的方法,從不同角度分析了系統(tǒng)太陽能保證率選取問題,并綜合給出最佳太陽能保證率選取的相關(guān)建議。 首先,本文以大連理工大學(xué)土壤源熱泵系統(tǒng)為基礎(chǔ),設(shè)計并建立了太陽能-土壤源熱泵實驗系統(tǒng),該系統(tǒng)具有夏季供冷、冬季供熱、過渡季蓄熱三種運行模式,用以滿足此類系統(tǒng)實驗研究。 其次,本文以TRNSYS軟件為平臺,建立了對應(yīng)于實驗系統(tǒng)的數(shù)學(xué)仿真模型,用以進一步的系統(tǒng)分析。利用建成后的系統(tǒng)進行了三組實驗研究,確�；赥RNSYS軟件所建數(shù)學(xué)模型的正確性。分析結(jié)果表明,本研究所建數(shù)學(xué)模型較為準(zhǔn)確,可滿足更深入、更全面的系統(tǒng)研究。 最后,利用經(jīng)過驗證的數(shù)學(xué)模型分析系統(tǒng)太陽能保證率問題。以大連地區(qū)辦公建筑為例,結(jié)合《公共建筑節(jié)能(65%)設(shè)計標(biāo)準(zhǔn)》(遼寧省地方標(biāo)準(zhǔn))DB21/T1899-2011,本文具體分析了系統(tǒng)最佳太陽能保證率選取方法。利用DeST軟件分析建筑全年逐時負荷,并用TRNSYS軟件深入分析系統(tǒng)性能。選用集熱器面積、水箱容積、跨季節(jié)蓄熱啟動溫度、地埋管深度、地埋管數(shù)量5個因素,運用正交試驗原理,分析系統(tǒng)太陽能保證率敏感性,并從運行能耗、土壤溫度平衡、系統(tǒng)經(jīng)濟性等角度給出相關(guān)建議。結(jié)合對不同地區(qū)、不同類型建筑、不同節(jié)能率建筑的分析,綜合給出關(guān)于太陽能保證率選取方面的合理建議。研究結(jié)果表明,集熱器面積是系統(tǒng)供暖季太陽能保證率的高度顯著性影響因素,設(shè)計集熱器面積應(yīng)最大程度地滿足系統(tǒng)經(jīng)濟性高、土壤溫度基本實現(xiàn)平衡、運行能耗低,此時的太陽能保證率為系統(tǒng)最佳太陽能保證率,且其與所在地太陽能資源狀況以及建筑體形系數(shù)、負荷特性、節(jié)能率等因素相關(guān)。
[Abstract]:The rapid development of social economy, energy is gradually failure. To promote sustainable economic development, promote energy-saving emission reduction policies, promote the development of new energy and renewable energy policy imperative. Due to the use of solar energy and shallow geothermal energy reserves of two kinds of rich and easy to collect clean and renewable energy, solar energy and ground source (Solar Assisted Ground-source. Referred to as SAGS) for heating and cooling heat pump system has incomparable advantages in energy conservation and environmental protection. The solar guarantee rate reflects the system of solar thermal utilization, is an important design parameter of solar ground source heat pump system. By geography, climate, factors affecting the load characteristics, the rate of the best value relates to complex problems to ensure solar energy research the difficulty, the current domestic and foreign research on this issue is relatively insufficient. In view of this, this study adopts the methods of experiment and simulation analysis In this paper, the selection of solar energy guarantee rate is analyzed from different angles, and some suggestions on the selection of the best solar energy guarantee rate are given.
First of all, based on the ground source heat pump system of Dalian University of Technology, a solar ground source heat pump experimental system is designed and built. The system has three operation modes, namely, summer cooling, heating in winter and heat storage in transitional season, so as to meet the experimental research of such systems.
Secondly, based on TRNSYS software platform, established a mathematical model corresponding to the experimental system, for further system analysis. Three series of experiments were carried out using the completed system, ensure the accuracy of the mathematical model based on the TRNSYS software. The analysis results show that the proposed model is accurate. The system can meet the deeper and more comprehensive study.
Finally, by using the validated model analysis system guaranteed solar rate problem. Office building in Dalian area as an example, combined with the "public building energy efficiency design standards (65%) > (Liaoning provincial standard) DB21/T1899-2011, this paper analyses the best solar system guarantee rate selection method. Analysis of building load by using DeST software. The performance of the system and analyzed by TRNSYS software. The collector area, tank volume, seasonal storage temperature, the depth of buried pipe, 5 factors the number of buried pipes, using the principle of orthogonal test and analysis system of guaranteed solar rate sensitivity, and from the energy balance of soil temperature, angle of system of economy are related according to the proposal. In different regions, different types of construction, analysis of different building energy saving rates, given about solar guarantee rate of selecting the reasonable proposals on the table. The results of the study The collector area is heating solar energy to ensure highly significant influencing factor of rate, design of collector area should be to maximize economic system of high soil temperature, the basic realization of balance, low energy consumption, the solar fraction is the best solar system can guarantee rate, and with the status of solar energy resources the location and the building shape coefficient, load characteristics, energy saving rate and other related factors.

【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TU831

【參考文獻】

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本文編號：1551314