| URN | etd-0731113-155347 | Statistics | This thesis had been viewed 557 times. Download 4 times. |
| Author | Jiin Jhy Lai | ||
| Author's Email Address | jjlai@gate.sinica.edu.tw | ||
| Department | Institute Of Mechanical Engineering | ||
| Year | 2012 | Semester | 2 |
| Degree | Master | Type of Document | Master's Thesis |
| Language | zh-TW.Big5 Chinese | Page Count | 51 |
| Title | The study of energy-saving efficiency Of hyrocarbon refrigerants in a traditional drinking fountain |
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| Abstract | To prevent the usage of hydrochlorofluorocarbon (HCFC) as refrigerants, many countries have proposed its alternative solutions. The most mature replacement from the market is the hybrid refrigerants of hydrofluorocarbon (HFC). Although HFCs do not catalyze ozone depletion, they still contribute to the effect of global warming. Hydrocarbon (HC) refrigerants may be one of potential candidates for the replacements and many studies are now focusing on them; however, the flammability of HCs is the biggest killer drawback. HC refrigerants cannot be applied on the large refrigeration and air-conditioning system so far. However, the small scale refrigeration and air-conditioning system using HC refrigerants has been quite popular in Europe nowadays. The main objective of this research is to measure the energy-saving efficiency of a hybrid hydrocarbon refrigerant in a traditional drinking fountain. We utilized 81 grams of hybrid hydrocarbon refrigerant with 50% of R-290 and 50% of R-600a to replace original 135 grams of R-134a refrigerant in a traditional drinking fountain. In order to control the experimental factors, we do not replace any other machine parts and the refrigeration oil as well. The result shows that the hybrid HC refrigerant enhances the cooling capacity dramatically and reduces 4% of the average power for the energy consumption. The temperature of the evaporator in the fountain cools down rapidly. The quantity of the fill-in refrigerant can be reduced about 40% as well. The HC refrigerant is superior to R134a refrigerant not only for the environmental protection but also for the overall system performance. | ||
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| Files | indicate in-campus access at one year and off-campus not accessible | ||
| Date of Defense | 2012-07-22 | Date of Submission | 2013-09-10 |