Please use this identifier to cite or link to this item:
http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/31852Full metadata record
| ???org.dspace.app.webui.jsptag.ItemTag.dcfield??? | Value | Language |
|---|---|---|
| dc.contributor.advisor | 陳希立(Sih-Li Chen) | |
| dc.contributor.author | Kuan-Ting Lin | en |
| dc.contributor.author | 林冠廷 | zh_TW |
| dc.date.accessioned | 2021-06-13T03:22:13Z | - |
| dc.date.available | 2016-08-05 | |
| dc.date.copyright | 2011-08-05 | |
| dc.date.issued | 2011 | |
| dc.date.submitted | 2011-07-29 | |
| dc.identifier.citation | [1] Lazzarin RM, Gasparella A,Longo GA. .Chemical dehumidification by liquid desiccants: theory and experiment.. International Journal of Refrigeration, 1999.
[2] S. A. Abdul-Wahab,Abu-Araci M K. Predictions of moisture removel rate and dehumidification effectiveness for structured liquid desiccant air dehumidifer.Energy,2004. [3] Manuel R. Conde. Properties of aqueous solutions of lithium and calcium chlorides :formulations for use in air conditioning equipment design. Int. J. Thermal Science. 2004. [4] Ertas A,Anderson E E, Kiris I. Properties of a new liquid desiccant solution—lithium chloride and calcium chloride mixture [ J ] . Solar Energy, 1992. [5] Arshad Y. Khan and Jorge L. Martinez. Modelling and parametric analysis of heat and mass transfer performance of a hybrid liquid desiccant absorber. Energy Conversion and Management. 1998. [6] 張小松, 費秀峰, 施明恆。蓄能型溶液除濕蒸發冷卻空調系統中除濕器研究 。東南大學學報(自然科學版) , 2003。 [7] W.Kessling ,E.Laevemann and C.Kapfhammer. Energy Storage for desiccant cooling systems component development .Solar Energy ,1998 ,64(4) :209 – 221 [8] Shahab Alizadeh, Kame Khouzam. A study into the potential of using liquid desiccant solar air.Solar ,2004. [9] X.H. Liu, X.M.Chang,J.J.Xia,Y.Jiang， Performance analysis on the internally cooled dehumidifier using liquid desiccant , Building and Environment 44(2009),p299–p308. [10] Manuel R. Conde. Properties of aqueous solutions of lithium and calcium chlorides:formulations for use in air conditioning equipment design. International Journal of Thermal Sciences 43 (2004) [11] Stevens DI, Braun JE, Klein SA. An effectiveness model of liquid-desiccant system heat/mass exchangers. Solar Energy 1989;42(6):449e55. [12] Ren Chengqin, Jiang Yi, Zhang Yianpin. Simplified analysis of coupled heat and mass transfer processes in packed bed liquid desiccant air contact system. Solar Energy 2006;80:121e31. [13] Yin Yonggao, Zhang Xiaosong. Comparative study on internally heated and adiabatic regenerators in liquid desiccant air conditioning system. Building and Environment 2010;45:1799e807. [14] Factor HM, Grossman G. A packed bed dehumidifier/regenerator for solar air conditioning with liquid desiccants. Sol Energy 1980;24(6):541–50. [15] Gad HE, Hamed AM, El-Sharkawy II. Application of a solar desiccant/collector system for water recovery from atmospheric air. Renewable Energy 2001;22:541e56. [16] Patil KR, Tripathi AD, Pathak G, et al. Thermodynamic properties of aqueous electrolyte solutions. 1. Vapor pressure of aqueous solutions of LiCl, LiBr, and LiI. J Chem Eng Data 1990;35(2):166–8. [17] Ali A, Vafai K. An investigation of heat and mass transfer between air and desiccant film in an inclined parallel and counter flow channel.Int J Heat Mass Transfer 2004;47:1745–60. [18] Factor HM, Grossman G. A packed bed dehumidifier/regenerator for solar air conditioning with liquid desiccants. Solar Energy 1980;24(6):541–50. [19] RenCQ,TuM,WangHH. Analytical model for heat and mass transfer processes in internally cooled or heated liquid desiccant-air contact units. International Journal of Heat and Mass Transfer 2007;50(17):3545–55. [20] LowensteinA,SlayzakS,KozubalE. A zero carry over liquid-desiccant air conditioner for solar applications. In: ASME international solar energy conference, Denver,CO;2006. [21] Potnis SV, Lenz TG. Dimensionless mass-transfer correlations for packed-bed liquid-desiccant contactors. Ind Eng Chem Res 1996;35(11):4185–93. [22] Patnaik S, Lenz TG, Lof GOG. Performance studies for an experimental solar open-cycle liquid desiccant air dehumidification system. Solar Energy 1990;44(3):123–35. [23] Sultan GI, Hamed AM, Sultan AA. The effect of inlet parameters on the performance of packed tower regenerator. Renew Energy 2002;26(2):271–83. [24] Chen XY, Li Z, Jiang Y, et al. Field study on independent dehumidification air-conditioning system—I: Performance of liquid desiccant dehumidification system. ASHRAE Trans 2005;11(2):271–6. [25] Fumo N, Goswami DY. Study of an aqueous lithium chloride desiccant system: air dehumidification and desiccant regeneration. Solar Energy 2002;72(4):351–61. [26] C.Y. Tsai, A.N. Soriano, M.H. Li, Vapor pressures, densities, and viscosities of the aqueous solutions containing (triethylene glycol or propylene glycol) and(LiCl or LiBr), The Journal of Chemical Thermodynamics 41 (5) (2009) 623–631. [27] Y.J. Dai, H.F. Zhang, Numerical simulation and theoretical analysis of heat and mass transfer in a cross flow liquid desiccant air dehumidifier packed with honeycomb paper, Energy Conversion and Management 45 (9–10) (2004)1343–1356. [28] Y.J. Dai, R.Z. Wang, H.F. Zhang, J.D. Yu, Use of liquid desiccant cooling to improve the performance of vapor compression air conditioning, Applied Thermal Engineering 21 (12) (2001) 1185–1202. [29] H. Torío, A. Angelotti, D. Schmidt, Energy analysis of renewable energy-based climatisation systems for buildings: a critical view, Energy and Buildings 41 (3)(2009) 248–271. [30] Giovanni AL, Gasparella A. Experimental analysis on chemical dehumidification of air by liquid desiccant and desiccant regeneration in a packed tower. J Solar Energy Eng 2004;125(1):587–91. [31] Yango Y, Zheng X, Chen Z. Experimental study on dehumidifier and regeneration of liquid desiccant cooling air conditioning system. Build Environ 2007;42(7):2505–11. [32] A.A. Kinsara, M.M. Elsayed, O.M. Al-Rabghi, Proposed energy-efficient air conditioning system using liquid desiccant, Applied Thermal Engineering 16 (10)(1996) 791–806. [33] M. Tu, C.Q. Ren, L.A. Zhang, J.W. Shao, Simulation and analysis of a novel liquid desiccant air-conditioning system, Applied Thermal Engineering 29 (2009)2417–2425. [34] Lu ZF, Chen PL, Zhang X. Approximate analytical solution of heat and mass transfer processes in packed-type cross-flow liquid desiccant system and its experimental verification. J Tongji Univ 2001;29(2):149–53. [35] Abdul-Wahab SA, Zurigat YH, Abu-Arabi MK. Predictions of moisture removal rate and dehumidification effectiveness for structured liquid desiccant air dehumidifier. Energy 2004;29:19e34. [36] Dai YJ, Zhang HF. Numerical simulation and theoretical analysis of heat and mass transfer in a cross liquid desiccant air dehumidifier packed with honeycomb paper. Energy Convers Manage 2004;45:1343–56. [37] Handbook of Lithium and Natural Calcium Chloride,Donald E.Garrett. | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/31852 | - |
| dc.description.abstract | 傳統空調系統使用冰水主機進行除濕，耗費大量電力。本研究使用低耗電之液體除濕系統，經實驗證明能有效移除空氣中水分達到除濕效果。液體除濕系統只需使用水泵和溶液泵，可獨立處理外氣濕度，相較於傳統空調系統，具有更佳的靈活性。
本研究之新型外氣空調箱設備的特色為：(1)結合淺層溫能應用；(2)吸收液除濕系統；(3)超飽和噴霧製冷與冷能回收等三項特點。本除濕系統係使用氯化鈣溶液作為吸收液，以實驗和數學理論模式相互結合，研究本系統之除濕性能。 本系統在外氣17.7 g/kg濕度比、空氣質量流率0.25 kg/s條件下，除濕後可降低空氣4.9 g/kg之濕度比，提供室內環境12.8 g/kg之濕度比，除濕效率可達到68 %。研究顯示當提高空氣與吸收液入口質量流率、空氣入口絕對濕度和吸收液入口濃度將會提高水分移除率。當降低空氣入口質量流率和提升吸收液入口質量流率將會提高除濕效率。 | zh_TW |
| dc.description.abstract | Traditional air conditioning systems use chillers for dehumidification. In this study, liquid-desiccant dehumidification is an effective method for extracting moisture from the air with relatively low energy consumption. In practice, the system requires power only for water pumps and solution pumps. In a liquid desiccant air conditioning system, humidity can be controlled individually, which has great advantages comparing to the traditional air-conditioning system.
This study proposes a new type of make-up air system. The features are: (1) system coupling with geothermal energy, (2) liquid desiccant dehumidification, (3) super saturation spray cooling and cold energy recycling. Calcium Chloride aqueous solution was used as the liquid desiccant in this system. Dehumidification performance is studied with experimental and numerical method. Condition of the system is 17.7 g / kg humidity ratio for the inlet air, air flow rate is 0.25 kg/s, which can reduce 5 g/kg of the humidity ratio, and the indoor environment humidity ratio could achieve by 12.8 g/kg dehumidification efficiency can reach 70%. It was found that when increasing air and desiccant inlet flow rate, air inlet absolute humidity and desiccant inlet concentration, the moisture removal rate will be higher. When decreasing air inlet flow rate and increasing desiccant inlet flow rate, the dehumidifier effectiveness will be higher. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-13T03:22:13Z (GMT). No. of bitstreams: 1 ntu-100-R98522301-1.pdf: 3877744 bytes, checksum: f3cae7d08138fe89e624824237a88c32 (MD5) Previous issue date: 2011 | en |
| dc.description.tableofcontents | 誌謝 I
摘要 II Abtract III 目錄 IV 圖目錄 VII 表目錄 XI 符號說明 XII 第一章 緒論 1 1.1前言 1 1.2文獻回顧 4 1.3研究動機與目的 5 第二章 基礎理論 10 2-1 化學除濕熱質傳基礎理論 10 2-2 濕空氣學與除濕溶液學理論 13 2-3 誤差分析 21 2-4 計算流程 22 第三章 實驗設備及研究方法 29 3-1 系統簡介 29 3-2 實驗設備及量測儀器 30 3-2.1設備簡介 30 3-2.2 溫度之校正 32 3-3 實驗方法 32 3-4 實驗參數範圍 33 3-5 實驗流程 33 3-5.1 空氣入口質量流率變化 34 3-5.2空氣入口乾球溫度變化 34 3-5.3 空氣入口濕度變化 35 3-5.4吸收液入口質量流率變化 36 3-5.5吸收液入口溫度變化 36 3-5.6吸收液入口濃度變化 37 第四章 結果與討論 44 4-1 氯化鈣性能測試 44 4-2 空氣入口質量流率變化對除濕系統影響 46 4-3 空氣入口乾球溫度變化對除濕系統影響 48 4-4 空氣入口濕度變化對吸收液系統影響 50 4-5 溶液入口質量流率變化對吸收液系統影響 52 4-6 溶液入口溫度變化對吸收液系統影響 54 4-7 溶液入口濃度變化對吸收液系統影響 56 4-8 溶液再生之研究 58 4-8.1不同濃度下，對再生溫度的影響 58 4-8.2不同氣液比下，對再生溫度的影響 58 第五章 結論與建議 80 5-1結論 80 5-1.1空氣端參數變化之性能研究 80 5-1.2溶液端參數變化之性能研究 80 5-1.3再生端之研究 81 5-1.4最佳操作點 81 5-2建議 82 參考文獻 83 | |
| dc.language.iso | zh-TW | |
| dc.subject | 氯化鈣 | zh_TW |
| dc.subject | 外氣空調箱 | zh_TW |
| dc.subject | 化學液體除濕 | zh_TW |
| dc.subject | 吸收液 | zh_TW |
| dc.subject | liquid desiccant dehumidification | en |
| dc.subject | Calcium chloride | en |
| dc.subject | desiccant | en |
| dc.subject | make-up air system | en |
| dc.title | 使用氯化鈣溶液之外氣空調箱除濕性能研究 | zh_TW |
| dc.title | Performance Analysis of Dehumidification using Calcium Chloride in Make-up Air System | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 99-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 柯明村(Ming-Tsun Ko),陳輝俊(Hui-Chun Chen),張至中(Chih-Chung Chang) | |
| dc.subject.keyword | 外氣空調箱,化學液體除濕,吸收液,氯化鈣, | zh_TW |
| dc.subject.keyword | make-up air system,liquid desiccant dehumidification,desiccant,Calcium chloride, | en |
| dc.relation.page | 86 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2011-07-29 | |
| dc.contributor.author-college | 工學院 | zh_TW |
| dc.contributor.author-dept | 機械工程學研究所 | zh_TW |
| Appears in Collections: | 機械工程學系 | |
Files in This Item:
| File | Size | Format | |
|---|---|---|---|
| ntu-100-1.pdf Restricted Access | 3.79 MB | Adobe PDF |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.