Aryadi Suwono
Faculty of Mechanical and Aerospace Engineering Institut Teknologi Bandung, Bandung

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Journal : Mesin

RETROFIT AND CONVERSION OF R-22 CHILLER TO R-290 AND ITS PERFORMANCE COMPARISON Suwono, Aryadi; Tandian, N. P; Pasek, A. D; Hardianto, T; Soelaiman, T. A Fauzi
Mesin Vol 14, No 1 (1999)
Publisher : Mesin

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Abstract

The retrofit and conversion of a R22 chiller to R290 was done on an AC chiller Carrier Type 30-GB-070-910. The retrofit of chiller was mainly the implementation of safety features and conversion to HC refrigerant. A series of measurements to evaluate its performance has been carried out on the same chiller for both eases i.e. before and after conversion, while it was in use. The resulting data analysis revealed that the chiller performed better with HC refrigerant compare to its previous condition. Retrofitting procedure, refrigerant conversion, test procedure and data analyses are discussed in this paper.
KARAKTERISTIK TERMAL SISTEM TRANSMISI HIDRAULIK Simanjuntak, Toman S; Suwono, Aryadi; Sularso, Sularso; Josito, H. M
Mesin Vol 2, No 4 (1983)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (308.938 KB) | DOI: 10.5614/MESIN.1983.2.4.1

Abstract

Tulisan ini mengelengahkan hasil penelitian dari karakteristik termal sebuah sistem transmisi tenaga hidraulik. Pendekatan dan prosedur yang diterapkan untuk melaksanakan diuraikan, Hasil-hasil yang penting baik yang diperoleh dari pengkajian teori maupun eksperimen dibahas. Penelitian berhasil mengembangkan persamaan-persamaan dan prosedur perencanaan sistem transmisi hidraulik dari aspek termalnya. Persamaan-persamaan tersebut dipecahkan secara numerik dengan bantuan komputer dan diuji keandalannya dengan data eksperimen.