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題名 | 自然冷媒CO2/NH3二元式冷凍系統低溫側最佳冷凝溫度之熱力分析=Thermodynamic Analysis of Optima Condensing Temperature of Low-Temperature Side for Cascade Refrigeration Systems Applying Natural Refrigerants CO2/NH3 |
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作者姓名(中文) | 李宗興; 陳東煒; 劉正晧; | 書刊名 | 臺北科技大學學報 |
卷期 | 37:2 2004.09[民93.09] |
頁次 | 頁79-87 |
分類號 | 446.64 |
關鍵詞 | 二元式冷凍系統; 自然冷媒; Cascade refrigeration system; Natural refrigerant; CO[feaf]; NH[feb0]; |
語文 | 中文(Chinese) |
中文摘要 | 本文的研究目的是利用理論模擬的方式,針對CO2/NH3二元式冷凍系統,以達到最大COP為準則,進行低溫側冷凝溫度在不同設計參數下最佳化之研究。本文所考慮的設計參數為:高溫側冷凝溫度(Tc)、低溫側蒸發溫度(Te)、以及二元冷凝器(cascade condenser)中間傳熱溫差(ΔT)。模擬結果發現:最佳TMC值與Te、Tc及ΔT等設計參數之關係可以表達成如式(12)所示之關係式。本文結果將可作為未來發展與設計二元式冷凍系統與設備之重要參考。 |
英文摘要 | This study, mainly focusing on a cascade refrigeration system utilizing the natural refrigerants of carbon dioxide and ammonia (CO2/NH3), applied the thermodynamic analysis through theoretical simulation to find the optimum condensing temperature at low-temperature side under various design parameters so that the maximum COP is achievable. The design parameters include: condensing temperature at high-temperature side (Tc), evaporating temperature at low-temperature side (Te) and temperature difference of intermediate heat-transfer at cascade-condenser (ΔT). By incorporating the prediction data, a correlation of optimum condensing temperature at low-temperature side has been developed. The results of this study can be used as reference for the design and development of CO2/NH3 cascade refrigeration system and equipment in the future. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。