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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/78395完整後設資料紀錄
| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 黃美嬌(Mei-Jiau Huang) | |
| dc.contributor.author | Hung-Yu Chen | en |
| dc.contributor.author | 程泓諭 | zh_TW |
| dc.date.accessioned | 2021-07-11T14:54:46Z | - |
| dc.date.available | 2026-02-05 | |
| dc.date.copyright | 2021-03-10 | |
| dc.date.issued | 2021 | |
| dc.date.submitted | 2021-02-01 | |
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/78395 | - |
| dc.description.abstract | 本論文是研究一個利用低溫氮氣進行廢冷回收的熱電發電裝置。藉由實驗驗證此裝置克服了凝水以及結冰之問題，成功發出電能，研究並探討熱電晶片的層數與分布方式對發電效率之影響。從實驗結果發現，在同一種晶片設置下，輸出功率會隨流量增加而增加；當晶片的層數相同時，每側只在熱擴散塊中間黏貼晶片時的輸出功率會較每側貼滿晶片時高；而當熱擴散塊每側黏貼晶片的情形相同時，黏貼三層時的輸出功率會比只黏貼一層時高。 接著藉由理論模型輔以實驗數據進行探討。黏貼一層時，晶片冷端溫度隨著氮氣流量增加而增加，而黏貼三層晶片時，晶片冷端溫度有著相反的變化趨勢。而晶片熱電參數的部分，從四種晶片排列中得到的賽貝克係數大部分都小於廠商提供的數據。晶片內電阻則隨著溫度上升而增加，且與熱端溫度呈現線性關係。所有實驗中，最大發電功率以及最大實驗發電效率分別為0.93W和2.67%，且均發生在每側只在熱擴散塊中間黏貼三層晶片、氮氣流量達到245SLPM時。 | zh_TW |
| dc.description.abstract | In this thesis, a waste-cold-recovery system which can extract cold energy from cryogenic nitrogen and generates electricity in use of thermoelectric power generators (TEGs) is investigated experimentally. The system is proved to be anti-icing and anti-condensing; effects of the number of the layer of the TE chips and the distribution of the TE chips are explored. The experimental results show the output power increases with the flow rate for a given layout of the TE chips; when the number of the layer of the TE chips is fixed, the output power is larger when the thermal spreader is only middle covered by TE chips than when it is fully covered. When the distribution over the thermal spreader of the TE chips is fixed, the output power in the three-layer layout is larger than that in the one-layer layout. A theoretical analysis and experimental data are further studied to explore the system. The cold-side temperature of the one-layer layouts increases with the flow rate; an opposite trend is observed however from the measurements associated with the three-layer cases. For the properties of the TE chips, most of the Seebeck coefficients obtained are smaller than the value provided by the manufacturer. The internal resistances increase with the temperature and a linear dependence on the hot-side temperature is found. Among all tests, the largest output power and the largest efficiency are 0.93W and 2.67% when the thermal spreader is middle covered by three layers of TE chips and the flow rate of the nitrogen is 245SLPM. | en |
| dc.description.provenance | Made available in DSpace on 2021-07-11T14:54:46Z (GMT). No. of bitstreams: 1 U0001-2801202117583200.pdf: 5272614 bytes, checksum: 77e4fdae5ec21a7e264fe37fc209f1d8 (MD5) Previous issue date: 2021 | en |
| dc.description.tableofcontents | 口委委員審定書 I 誌謝 II 中文摘要 III Abstract IV List of Tables VIII List of Figures IX Nomenclature XIX Chapter 1 Introduction 1 1.1 Literature review 1 1.2 Research motivation and purpose 11 1.3 Thesis organization 12 Chapter 2 Thermoelectric Power Generator(TEG) 13 2.1 Thermoelectric effect 13 2.2 Effective properties 15 2.3 Power generation rate 18 Chapter 3 Experimental Design and Results 19 3.1 Waste-cold-recovery system 19 3.2 One-layer energy recovery systems 26 3.2.1 Fully-covered layout 26 3.2.2 Middle-covered layout 29 3.3 Three-layer energy recovery systems 30 3.3.1 Fully-covered layout 30 3.3.2 Middle-covered layout 31 3.4 Comparison 32 Chapter 4 Discussions 36 4.1 Cold-side temperature of TE chip 36 4.1.1 Open-circuit system 36 4.1.2 Closed-circuit system 44 4.2 Seebeck coefficients 45 4.3 Internal resistances 47 4.4 Efficiency of the waste-cold-recovery system 48 4.5 Error analysis 50 Chapter 5 Conclusions and Future Work 52 5.1 Conclusions 52 5.2 Future work 53 References 55 Tables 60 Figures 65 Appendix. Another position of the warm nitrogen impingement 125 | |
| dc.language.iso | en | |
| dc.subject | 抗凝水 | zh_TW |
| dc.subject | 熱電發電裝置 | zh_TW |
| dc.subject | 廢冷回收 | zh_TW |
| dc.subject | 液態氮 | zh_TW |
| dc.subject | 抗結冰 | zh_TW |
| dc.subject | anti-icing | en |
| dc.subject | waste-cold recovery | en |
| dc.subject | cryogenic nitrogen | en |
| dc.subject | anti-condensing | en |
| dc.subject | thermoelectric power generator | en |
| dc.title | 抗凝水抗結冰低溫廢冷回收裝置之設計與測試研究 | zh_TW |
| dc.title | A Design and Study of an Anti-condensing and Anti-icing Waste-cold-recovery System | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 109-1 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 饒達仁(Da-Jeng Yao),呂明璋(Ming-Chang Lu),陳軍華(Chun-Hua Chen) | |
| dc.subject.keyword | 熱電發電裝置,廢冷回收,液態氮,抗凝水,抗結冰, | zh_TW |
| dc.subject.keyword | thermoelectric power generator,waste-cold recovery,cryogenic nitrogen,anti-condensing,anti-icing, | en |
| dc.relation.page | 132 | |
| dc.identifier.doi | 10.6342/NTU202100235 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2021-02-02 | |
| dc.contributor.author-college | 工學院 | zh_TW |
| dc.contributor.author-dept | 機械工程學研究所 | zh_TW |
| dc.date.embargo-lift | 2026-02-05 | - |
| 顯示於系所單位： | 機械工程學系 | |
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