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Zeolite NaA as an additive in enhancing the performance of absorption refrigeration system

The reversible Carnot cycle process using to obtained the optimum coefficient of performance (COP) and ammonia/water ratio. In this experiment the refrigerant is anhydrous ammonia and the absorber is water and ammonia/water ratios used are in the range of 5% to 30% ammonia in water base on volume pe...

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第一著者: Hassan, Zulkafli Bin
フォーマット: Research Report
言語:English
出版事項: 2008
主題:
TP Chemical technology
オンライン･アクセス:http://umpir.ump.edu.my/id/eprint/36507/1/Zeolite%20NaA%20as%20an%20additive%20in%20enhancing%20the%20performance%20of%20absorption%20refrigeration%20system.wm.pdf
http://umpir.ump.edu.my/id/eprint/36507/
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spelling my.ump.umpir.365072023-03-09T06:15:58Z http://umpir.ump.edu.my/id/eprint/36507/ Zeolite NaA as an additive in enhancing the performance of absorption refrigeration system Hassan, Zulkafli Bin TP Chemical technology The reversible Carnot cycle process using to obtained the optimum coefficient of performance (COP) and ammonia/water ratio. In this experiment the refrigerant is anhydrous ammonia and the absorber is water and ammonia/water ratios used are in the range of 5% to 30% ammonia in water base on volume percentage in the solution. Assuming the absorption unit has complete cycle and stable system after 8 hours and the performance of the absorption chillers unit is constant for each experiment the value of coefficient of performance COP is calculated for each hour depending on the refrigerant/absorber ratio. The COP increased with increasing generator temperature and with decreasing absorber and condenser temperatures for all the systems. Also, the lowest temperature at the evaporator is important in order to control the temperature for all the system cycle that affects the value of COP in absorption chillers. In conclusion, the optimum ammonia/water ratios that obtained in this experiment are 30% ammonia purity with 2.97 coefficient of performance. Then, to increase the performance of absorption refrigeration system Zeolite NaA was added. in the ammonia water solution with different concentration in the range 0.0002M to 0.001M. The optimum concentration of additive is determined by referring to the lowest cooling box temperature which will give the lowest value of coefficient of performance (COP). The optimum concentration of additive that can be added to the absorption process is 0.0006M of Zeolite NaA. The optimum coefficient is 1.5 compare to the coefficient of performance for absorption without additive that is only 1.2. 2008 Research Report NonPeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/36507/1/Zeolite%20NaA%20as%20an%20additive%20in%20enhancing%20the%20performance%20of%20absorption%20refrigeration%20system.wm.pdf Hassan, Zulkafli Bin (2008) Zeolite NaA as an additive in enhancing the performance of absorption refrigeration system. , [Research Report: Research Report] (Unpublished)
institution Universiti Malaysia Pahang Al-Sultan Abdullah
building UMPSA Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Pahang Al-Sultan Abdullah
content_source UMPSA Institutional Repository
url_provider http://umpir.ump.edu.my/
language English
topic TP Chemical technology
spellingShingle TP Chemical technology
Hassan, Zulkafli Bin
Zeolite NaA as an additive in enhancing the performance of absorption refrigeration system
description The reversible Carnot cycle process using to obtained the optimum coefficient of performance (COP) and ammonia/water ratio. In this experiment the refrigerant is anhydrous ammonia and the absorber is water and ammonia/water ratios used are in the range of 5% to 30% ammonia in water base on volume percentage in the solution. Assuming the absorption unit has complete cycle and stable system after 8 hours and the performance of the absorption chillers unit is constant for each experiment the value of coefficient of performance COP is calculated for each hour depending on the refrigerant/absorber ratio. The COP increased with increasing generator temperature and with decreasing absorber and condenser temperatures for all the systems. Also, the lowest temperature at the evaporator is important in order to control the temperature for all the system cycle that affects the value of COP in absorption chillers. In conclusion, the optimum ammonia/water ratios that obtained in this experiment are 30% ammonia purity with 2.97 coefficient of performance. Then, to increase the performance of absorption refrigeration system Zeolite NaA was added. in the ammonia water solution with different concentration in the range 0.0002M to 0.001M. The optimum concentration of additive is determined by referring to the lowest cooling box temperature which will give the lowest value of coefficient of performance (COP). The optimum concentration of additive that can be added to the absorption process is 0.0006M of Zeolite NaA. The optimum coefficient is 1.5 compare to the coefficient of performance for absorption without additive that is only 1.2.
format Research Report
author Hassan, Zulkafli Bin
author_facet Hassan, Zulkafli Bin
author_sort Hassan, Zulkafli Bin
title Zeolite NaA as an additive in enhancing the performance of absorption refrigeration system
title_short Zeolite NaA as an additive in enhancing the performance of absorption refrigeration system
title_full Zeolite NaA as an additive in enhancing the performance of absorption refrigeration system
title_fullStr Zeolite NaA as an additive in enhancing the performance of absorption refrigeration system
title_full_unstemmed Zeolite NaA as an additive in enhancing the performance of absorption refrigeration system
title_sort zeolite naa as an additive in enhancing the performance of absorption refrigeration system
publishDate 2008
url http://umpir.ump.edu.my/id/eprint/36507/1/Zeolite%20NaA%20as%20an%20additive%20in%20enhancing%20the%20performance%20of%20absorption%20refrigeration%20system.wm.pdf
http://umpir.ump.edu.my/id/eprint/36507/
_version_ 1822923203493756928
score 13.250246

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