【摘要】：地埋管地源熱泵換熱系統(tǒng)作為一種經(jīng)濟有效的利用淺層地溫能節(jié)能技術(shù),在能源問題日益嚴(yán)重的今天受到了廣泛關(guān)注。本文針對當(dāng)前地埋管換熱器研究的現(xiàn)狀,結(jié)合實際工程,對不同埋管形式下的地埋管換熱器的換熱性能進行了一系列研究。本文依托實際工程,對位于南京市浦口區(qū)的某綠色產(chǎn)業(yè)園的垂直地埋管換熱器進行了現(xiàn)場試驗研究。為比較不同埋管形式下的地埋管換熱器換熱性能,本文亦利用實際工程條件,鋪設(shè)了水平螺旋埋管和地下室底板埋管,進行了現(xiàn)場試驗。引入單位管長每延米換熱效率參數(shù),通過試驗總結(jié)了地埋管換熱器的換熱規(guī)律。在現(xiàn)場試驗的基礎(chǔ)上,本文利用Fluent數(shù)值模擬軟件,對各埋管形式下的地埋管換熱器進行了相應(yīng)的數(shù)值建模工作,介紹了數(shù)值建模的一般步驟。為驗證數(shù)值模擬手段的可靠性,對實測結(jié)果與數(shù)值模擬結(jié)果進行了對比,為換熱器換熱性能及經(jīng)濟性分析建立了基礎(chǔ)。為量化各影響因素對地埋管換熱器的影響程度,本文以目前應(yīng)用最為廣泛的垂直雙U地埋管換熱器為例,利用數(shù)值模擬手段,對各影響因素的影響程度進行了深入分析研究。在研究中,亦搜集了相關(guān)工程案例,結(jié)合地源熱泵設(shè)計的相關(guān)規(guī)范與工程實際情況,對地埋管換熱器的優(yōu)化設(shè)計提出了建議。最后,本文對不同埋管形式下各換熱器的換熱性能進行了對比分析,提出了各埋管形式換熱性能的經(jīng)濟性評價指標(biāo),對比分析了各埋管形式的經(jīng)濟性。結(jié)合工程實例,量化了其經(jīng)濟性指標(biāo),總結(jié)了不同埋管形式的適用性。
文內(nèi)圖片：
圖片說明：地埋管地源熱泵系統(tǒng)示意圖
[Abstract]:As an economical and effective energy saving technology for shallow ground temperature energy, buried pipe ground source heat pump heat transfer system has been paid more and more attention in today's energy problem. In view of the present research situation of buried pipe heat exchanger and combined with practical engineering, a series of studies on the heat transfer performance of buried pipe heat exchanger under different buried pipe forms are carried out in this paper. Based on the practical project, the vertical buried pipe heat exchanger in a green industrial park in Pukou District of Nanjing City is tested and studied in this paper. In order to compare the heat transfer performance of buried pipe heat exchanger under different buried pipe forms, the horizontal spiral buried pipe and basement floor buried pipe are also laid by using the actual engineering conditions, and the field test is carried out. The heat transfer efficiency parameters per kilometer per unit length are introduced, and the heat transfer law of buried pipe heat exchanger is summarized through experiments. On the basis of field test, this paper uses Fluent numerical simulation software to carry on the corresponding numerical modeling work to the buried pipe heat exchanger under each buried pipe form, and introduces the general steps of the numerical modeling. In order to verify the reliability of the numerical simulation method, the measured results are compared with the numerical simulation results, which establishes the basis for the heat transfer performance and economic analysis of the heat exchanger. In order to quantify the influence degree of each influencing factor on the buried pipe heat exchanger, taking the vertical double U buried pipe heat exchanger, which is the most widely used at present, as an example, the influence degree of each influencing factor is deeply analyzed and studied by means of numerical simulation. In the study, the relevant engineering cases are also collected, and combined with the relevant specifications and engineering practice of the ground source heat pump design, some suggestions for the optimal design of the ground pipe heat exchanger are put forward. Finally, the heat transfer performance of each heat exchanger under different buried pipe forms is compared and analyzed, the economic evaluation index of heat transfer performance of each buried pipe form is put forward, and the economy of each buried pipe form is compared and analyzed. Combined with an engineering example, the economic index is quantified and the applicability of different buried pipe forms is summarized.
【學(xué)位授予單位】：南京大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TK172

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本文編號：2512001