| 研究生: |
吳建樟 Jian-Jhang Wu |
|---|---|
| 論文名稱: |
R410A 冷媒於熱交換器管路系統配置 與性能之實驗研究 Investigation of Different Exchanger Circuits with R410A Refrigerant |
| 指導教授: |
洪勵吾
Hourng-Lih Wu |
| 口試委員: | |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 機械工程學系在職專班 Executive Master of Mechanical Engineering |
| 論文出版年: | 2013 |
| 畢業學年度: | 101 |
| 語文別: | 中文 |
| 論文頁數: | 68 |
| 中文關鍵詞: | R410A 、熱交換器 、逆向流 、順向流 |
| 外文關鍵詞: | R410A, Heat Exchanger, Counter Flow, Forward Flow |
| 相關次數: | 點閱:20 下載:0 |
| 分享至: |
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由於現今節能和環保意識的抬頭,而屬於高耗能及環保問題的空調系
統,如何能提升空調系統的性能效率和環保功能的目的,來達成節能、高效
率的目標。
本次實驗主要是使用R410A冷媒做為工作流體,搭配不同的流量和不同
的管路系統配置在鰭管式熱交換器進行性能實驗,在實驗研究中發現R410A
冷媒,於熱交換器中,在管路分流數較多時,由於提升了熱交換器管路系統
溫度分佈之均勻性,使得熱交換器性能也愈好。而在順向流和於逆向流的不
同管路系統配置,R410A冷媒也具有不同的性能表現,實驗結果顯示以五進
五出、逆向流的管路系統配置方式,其性能是最佳的。
藉由實驗研究,來了解R410A冷媒的工作特性,在不同的管路配置方式
時,對於熱交換器的效能都會有不同的影響,希望可以做為空調業界,在
R410A冷媒開發時的設計參考,而設計出高效能、低成本的熱交換器的配置。
Nowadays, in consequence of the energy shortage and the eco-awareness, it makes
more important to emphasize on how to improve the efficiency and also get the purpose
of eco-awareness for the air conditioning equipment which is high energy consuming
and environmental damaging.
The main purpose of this experiment was taking the R410A refrigerant as mass
flow with different flow rate and circuit arrangement to process the performance
experiment of fin tube heat exchanger.
The result of the experiment turned out that the R410A refrigerant in the heat
exchanger, attributable to the more number of circuits which could average the
temperature of heat exchanger circuit system, the better for the heat exchanger
performance. With different allocation of circuit system in forward flow and counter
flow, there were different performances in the R410A refrigerant, the experiment result
shows that when the circuit system arrange as 5-circuit and counter flow , it would
demonstrate the optimal performance
We could find the operation characteristics of 410A refrigerant from the
experiment results; it would provide different effects for the heat exchanger with
various methods of the circuits. In the future, our long-term goal is to make R410A
refrigerant as an important design reference and also to promote this high efficiency and
low cost material in the field of air-conditioner.
1. 經濟部能源局,2012年能源產業技術白皮書,(2012).
2. 蒙特婁議定書-哥本哈根修正案,(1992).
3. 經濟部能源局,2012年非生產性質行業能源查核年報,台灣綠色生產力基
金會,2012)
4. Honeywell,R-410A,Material Safety Data Sheet ,GTRN-000417, (2003).
5. 「R410A 使用於箱型空調機的經驗與成果」,一丞通訊,Vol.18,
pp.1-6(1997).
6. S.M. Sami ,B. Song ,B. Poirier ,“Energy efficiency analysis of a new ternary
HFC alternative”,International Journal of Energy Research , Vol.21,
pp.1071-1079(1997).
7. F. de Monte,“Calculation of thermodynamic properties of R407C and R410A
by the martin–hou equation of State-Part I:Theoretical
Development”,International Journal of Refrigeration, Vol.25,
pp.306-313(2002).
8. W. Chen ,“A comparative study on the performance and environmental
characteristics of R410A and R22 residential air conditioners” , Applied
Thermal Engineering,Vol.28, pp.1-7(2008).
9. M.R. Hogun ,“The development of a low-temperature heat pump grain
dryer”,Ph.D. Thesis ,Purdue University , (1980).
10. A. Bejan ,“General criterion for rating heat-exchanger performance”,
International Journal of Heat and Mass Transfer,Vol.21, pp.655–658(1978).
11. A. Fakheri,“Heat Exchanger Efficiency ”,Journal Hear Transfer,Vol.129,
pp.1268-1276(2006).
67
12. C.C. Wang ,J.Y. Jang ,C.C. Lai ,Y.J. Chang ,“Effect of circuit arrangement
on the performance of air-cooled condensers ”, International Journal of
Refrigeration, Vol.22, pp.275-282(1999).
13. Z.Zhang ,P.G. Jin ,Z.G. Liu ,W.R. Tu ,“Effect of circuit arrangement on the
heat exchange performance of air-cooled condensers” , HV & AC , Vol.32,
pp.61-63(2002).
14. J. Liu , W.J. Wei ,G.L. Ding ,K.J. Wang ,“Numerical simulation and
analysis of performance of fin and tube heat exchanger with complex circuit
arrangement”,Journal of Chemical Industry and Engineering, Vol.56,
pp.47-52(2005).
15. L. Cabezas-Gómez ,H.A. Navarro ,J.M. Saiz-Jabardo ,S.M. Hanriot , C.B.
Maia,“Analysis of a new cross flow heat exchanger flow
arrangement-extension to several rows”, International Journal of Thermal
Sciences, Vol.55, pp.122-132(2012).
16. D. Yashar ,“An optimized design of finned-tube evaporators using the
learnable evolution model”, HVAC & Research , Vol.10, pp.201-211 (2004).
17. Z.Y. Guo ,S.Q. Zhou ,Z.X. Li ,L.G. Chen ,“Theoretical analysis and
experimental confirmation of the uniformity principle of temperature
difference field in heat exchanger”, International Journal of Heat and Mass
Transfer, Vol.45, pp.2119–2127(2002).
18. 王啟川,「不均勻動對熱交換器性能的影響」,冷凍與空調,Vol.31,
(2005) pp.45-54。
19. 王啟川,熱交換器設計,五南出版社, (2007)。
20. L. Cabezas-Gómez ,H.A. Navarro ,J.M. Saiz-Jabardo ,“Thermal
characterization of a cross-flow heat exchanger with a new flow
arrangement” , International Journal of Thermal Sciences,Vol.48,
68
pp.2165–2170(2009).
21. R.K. Shah ,Fundamentals of Heat Exchanger Design ,John Wiley & Sons
Inc, (2003).
22. ASHRAE handbook,“Fundamentals”,Atlanta GA,ASHRAE , (1997).
23. J.M. Calm ,“The next generation of refrigerants-historical
review ,considerations , and outlook”, International Journal of Refrigeration
Vol.31, pp.1123-1133(2008).
24. D. Del Col ,D. Torresin ,A. Cavallini ,“Heat transfer and pressure drop
during condensation of the low GWP refrigerant R1234yf ”,International
Journal of Refrigeration , Vol.33, pp.1307-1318. (2010)