Article Per Year (5 Year)
p-Index From 2021 - 2026
0.23
P-Index
This Author published in this journals
All Journal Jurnal Energi Dan Manufaktur Journal of Artificial Intelligence and Digital Business
Adi Purnawan
Unknown Affiliation
Computer Science & IT Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Analisa Performansi Sistem Air Conditioning Mobil tipe ET 450 dengan Variasi Tekanan Kerja Kompresor Adi Purnawan; Suarnadwipa -; I K.G. Wirawan
Jurnal Energi Dan Manufaktur Vol 4, No.1 April 2010
Publisher : Department of Mechanical Engineering, University of Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (520.613 KB)

Abstract

Comfort and coolness when traveling by vehicle especially car is highly needed. So many attempts have been made byhumans that comfortable traveling by car can be achieved. One of the effective ways in which comfortable traveling by car can beobtained is by installing air conditioning. The performance of air conditioning system is highly influenced by how the compressorworks. In other words, the pressure resulting from the suction highly determines the performance of air conditioning system,which then affects how the compressor works, the compressor power, the refrigeration effect, the efficiency of isentropic andcoefficient of performance (COP) of the car air conditioning sytem especially that of the car air conditioner type ET 450. Fromwhat has been described above, the writer would like to conduct a research entiled “ Analysis of the Performance of the Car AirConditioning system Type ET 450 with Variation of the Compressor Pressure”.The test was conducted on the car air conditioner type ET 450 with variations of suction 2.8 bar, 3 bar, 3.2 bar, 3.4bar, 3.6 bar and 3.8 bar. The data were obtained from the pressure of compressor output (P2), the temperatures in each point areT1, T2, T3, T4, the compressor rotationn is n, the strength of electrical current is I, and the volumetric flow rate. The data werethen processed and analyzed so that so that the performance of each variation of the suction could be actually and theoreticallyobtained.The findings show that the bigger the suction, the bigger the performance of the car air conditioner type ET 450 wouldbe. The theoretical coefficient of performance (COP) produced was bigger than the actual COP. The optimal COP took placewhen the suction was 441.325 kPa, the actual COP was 3.513177 and the theoretical COP was 3.632062
Implementasi Metode Six Sigma DMAIC untuk Meningkatkan kualitas LP Casting Head Cylinder Purnawan, Adi; Feriaty, Syarah; Syahliantina, Annisa
RIGGS: Journal of Artificial Intelligence and Digital Business Vol. 5 No. 2 (2026): Mei-Juli
Publisher : Prodi Bisnis Digital Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/riggs.v5i2.8289

Abstract

LP Casting Head Cylinder berperan sebagai ruang pembakaran dan penyalur panas ke sistem pendingin. Kualitas pengecoran komponen ini sangat berpengaruh terhadap kinerja mesin secara keseluruhan. Cacat produksi yang masih sering terjadi adalah misrun, kirai, sandrop, pressure abnormal, dan kotoran melekat. Berdasarkan laporan dari perusahaan manufaktur komponen otomotif nasional, tingkat cacat pada proses casting rata-rata mencapai 2,5% – 4%, yang jauh di atas standar Six Sigma. Penelitian ini memiliki variabel berupa jumlah produk cacat dan jenis cacat produk Head Cylinder. Dari kelima jenis cacat dominan, yang pqling sering terjadi adalah cacat misrun di pin sebanyak 363 pcs dan cacat misrun di studbosh sebanyak 193 pcs. Berdasarkan hasil perhitungan, diperoleh nilai DPMO sebesar 7,774 yang berada pada level 3,9 Sigma. Hasil perhitungan juga menunjukkan adanya peningkatan kualitas proses dibandingkan kondisi sebelumnya. Nilai DPMO setelah perbaikan sebesar 3,020 yang berada pada level 4,3 Sigma. Dari analisis dan pengolahan data yang dilakukan menggunakan metode Six-sigma DMAIC, maka diperoleh kesimpulan bahwa kualitas pengendalian pada NG misrun berada pada level sigma 3,9 dengan nilai 3,774. Setelah dilakukan perbaikan, jumlah cacat dapat ditekan secara signifikan dari 556 ppc menjadi 216 pcs dalam waktu 4 Minggu dengan kenaikan nilai sigma menjadi 4,3 Sigma yang menunjukkan peningkatan efisiensi produksi.
Co-Authors Feriaty, Syarah I Nengah Suarnadwipa I.K.G. Wirawan Syahliantina, Annisa