WEKO3
アイテム
Evaluation on environmental, economic and energy savings of ground source heat pumps in cold region of China
https://kitakyu.repo.nii.ac.jp/records/2000054
https://kitakyu.repo.nii.ac.jp/records/2000054a4b4b0ae-66bd-4c15-8558-28e7f41b94db
| 名前 / ファイル | ライセンス | アクション |
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(KKDE1251WP)甲第251号_オウ ホウケン.pdf (15.8 MB)
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| Item type | 学位論文 / Thesis or Dissertation(1) | |||||||||
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| 公開日 | 2024-01-18 | |||||||||
| タイトル | ||||||||||
| タイトル | Evaluation on environmental, economic and energy savings of ground source heat pumps in cold region of China | |||||||||
| 言語 | en | |||||||||
| 言語 | ||||||||||
| 言語 | eng | |||||||||
| キーワード | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | Clean Energy|Carbon Neutral|Simulation model|GSHPs | |||||||||
| 資源タイプ | ||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_db06 | |||||||||
| 資源タイプ | doctoral thesis | |||||||||
| アクセス権 | ||||||||||
| アクセス権 | open access | |||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||
| その他（別言語等）のタイトル | ||||||||||
| その他のタイトル | 中国寒冷地における地中熱ヒートポンプの環境性・経済性・省エネルギー性に関する評価研究 | |||||||||
| 言語 | ja | |||||||||
| 著者 |
オウ ホウケン
× オウ ホウケン
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| 抄録 | ||||||||||
| 内容記述タイプ | Abstract | |||||||||
| 内容記述 | Although other thermochemical processes, like gasification, pyrolysis and even carbonization, have also been studied and evaluated as potential approaches to handling excess sludge (Syed-Hassan et al., 2017), incineration is relatively mature and has been practiced for decades in Europe and is also being applied in China. When gasification, pyrolysis and carbonization can become a higher potential in negentropy than incineration in practice, they should be proposed to substitute incineration in the future. Back to a state-of-the art in both research and engineering, low-grade thermal energy can be transformed into high-grade heat for electricity generation via drying and incineration, reaching the maximal exploitation of chemical energy. Last but not least, the hazardous air pollutants (e.g., NOx, SO2, heavy metals and PCDDs/PCDFs) produced in incinerated sewage sludge ash (ISSA) can be effectively controlled through staged air combustion, Ca-based additive, Cl-base additive and N-containing compounds, respectively (Liang et al., 2021). After incineration, most phosphate from the inflow (up to 90%) accumulates in ISSA (about 8% dry weight) which is comparable to that of low-grade phosphate rocks, and can be fully recovered more easily than by other approaches (Fahimi et al., 2021; Hao et al., 2013; Ma and Rosen, 2021). For this reason, it has become a consensus on recovering phosphorus from ISSA (Egle et al., 2016). Moreover, P-recovery from ISSA has a high efficiency up to 95%, which can substitute the conventional production of monocalcium phosphate to improve the performance on LCA (Farag? et al., 2021); some LCA results revealed that the AshDec? process, the acidic wet-chemical leaching process LEACHPHOS? and also direct integration into the fertilizer industry with wet-chemical extraction all indicated only a low change in cumulative energy demand as the additional demand for chemicals and energy can be offset by the P-fertilizer credits (Amann et al., 2018). Moreover, heavy metals removed from P-recovery have also a potential to be recovered with some applied technologies, such as wet chemical phosphorus recovery (Liang et al., 2019; Petzet et al., 2012), Fe and Al recovery for producing coagulants by Phos4life? (Morf et al., 2019) and Ash2?Phos (Cohen et al., 2018). Based on the P-recovery technology catalog of European Sustainable Phosphorus Platform (ESPP) (ESPP, 2019), there have been already some full-scale plants of P- and metals-recovery from ISSA in Europe, and EasyMining's Ash2Phos technology with the high recovery efficiencies on P, Al, and Fe (90?95%, 60?80% and 10?20%, respectively) has been applied in a plant in Helsingborg, Sweden, which has a low energy consumption and a favorable mass balance. Anyway, recovering phosphorus and metals from ISSA are being practiced in Europe, especially in the Netherlands, Switzerland and Germany. Finally, the remaining ash after the recovery of phosphate and heavy metals can be utilized in building materials. Comprehensive utilization of thermal energy and sludge resources would reduce entropy production and enhance negentropy, creating an ideal approach to SWWT. | |||||||||
| 言語 | en | |||||||||
| 学位名 | ||||||||||
| 言語 | ja | |||||||||
| 学位名 | 博士(工学) | |||||||||
| 学位授与機関 | ||||||||||
| 学位授与機関識別子Scheme | kakenhi | |||||||||
| 学位授与機関識別子 | 27101 | |||||||||
| 言語 | ja | |||||||||
| 学位授与機関名 | 北九州市立大学 | |||||||||
| 学位授与年月日 | ||||||||||
| 学位授与年月日 | 2023-09-25 | |||||||||
| 学位授与番号 | ||||||||||
| 学位授与番号 | 甲第251号 | |||||||||
