Ardita, I Nengah (2008) Studi Eksperimental Penggunaan Refrigeran-Absorben (R22-DMF) Pada Performansi Siklus Refrigerasi Absorpsi Diffusi. Masters thesis, Institut Teknologi Sepuluh Nopember.
Preview |
Text
2105202007-Master_Thesis.pdf - Accepted Version Download (1MB) | Preview |
Abstract
Pasangan refrigeran NH3-air yang digunakan pada siklus refrigerasi absorpsi terdapat beberapa kelemahan diantaranya; beracun, mudah terbakar dan korosif terhadap bahan. Dengan adanya kekurangan ini, dimasa depan diharapkan pasangan refrigeran-absorben (R22-organic solvent) dapat menggantikan fungsinya. Namun sampai sekarang penelitian tentang penggunaan R22-organic solvent pada siklus refrigerasi absorpsi belum banyak dilakukan, bahkan pada siklus refrigerasi absorpsi diffusi belum ada yang melakukannya.
Penelitian ini dilakukan untuk mengkaji performansi dari penggunaan pasangan refrigeran-absorben (R22-DMF) pada siklus refrigerasi absorpsi diffusi (diffusion absorption refrigeration cycle). Penelitian ini dilakukan mulai dari perencanaan peralatan kemudian melakukan eksperimen, untuk mengetahui pengaruh beberapa parameter seperti; variasi besarnya energi panas yang masuk generator, perubahan efek refrigerasi dan konsentrasi larutan yang masuk ke sistem terhadap COP (coefficient of performance) sistem. Variasi konsentrasi larutan yang digunakan pada penelitian ini adalah; 0,5; 0,6; 0,7 dan 0,8 terhadap massa. Energi panas yang disuplai ke generator juga divariasikan dengan mengatur voltage regulator pada range tegangan (140 – 230) volt.
Berdasarkan hasil penelitian ini didapatkan bahwa besaran COP sistem sangat sensitif terhadap perubahan konsentrasi larutan yang masuk ke sistem dan perubahan laju energi panas yang disuplai ke generator(genQ&). COP maksimum yang dapat dicapai pada eksperimen ini adalah sebesar 0,15 pada konsentrasi larutan 0,7. Cooling load maksimum yang dapat dicapai sebesar 54,5 watt pada konsentrasi larutan 0,6. Dari hasil eksperimen, dapat direkomendasikan bahwa onsentrasi optimum larutan yang masuk ke sistem adalah (0,65 – 0,7).
========================================================================================================================
NH3-water refrigerant-absorbent pair used on absorption refrigeration cycle has some weakness, such as toxic, flammable and corrosive to materials. Concerning this weakness, in future refrigerant-absorbent pairs (R22-organic solvents) are hoped to be able to replace it function. However research on the using of R22-organic solvents on absorption refrigeration cycle has not been widely carried out until recent time. Research on diffusion absorption refrigeration cycle has not even been done yet.
This research is carried out to analyze performance of the using of refrigerant-absorbent pair (R22-DMF) on a diffusion absorption refrigeration cycle. The research was started with devices planning and followed by experiment making in order to know impact of some parameter such as variation of heat energy entering generator, change of refrigeration effect as well as solution concentration entering system toward coefficient of performance system. Variations of solution concentration used in this research are 0.5, 0.6, 0.7 and 0.8. Heat energy supplied to generator is also varied by adjusting voltage regulator in voltage range of 140-230 volt.
The research shows that COP system is very sensitive to solution concentration changes entering system and changes of supplied heat energy to generator (Qgen). Maximum COP which can be achieved in this experiment is 0.15 in solution concentration of 0.7. Maximum cooling load that can be achieved is 54.5 watt in solution concentration of 0.6. From this research, it can be recommended that optimum solution concentration entering the system is 0.65-0.7.
| Item Type: | Thesis (Masters) |
|---|---|
| Additional Information: | RTM 621.56 Ard s |
| Uncontrolled Keywords: | Diffusion absorption refrigeration cycle, R22-DMF dan COP |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK4035.R4 Refrigeration and refrigerating machinery |
| Divisions: | Faculty of Industrial Technology > Mechanical Engineering > 21101-(S2) Master Thesis |
| Depositing User: | ansi aflacha |
| Date Deposited: | 13 Feb 2020 02:06 |
| Last Modified: | 13 Feb 2020 02:07 |
| URI: | http://repository.its.ac.id/id/eprint/74841 |
Actions (login required)
 |
View Item |