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All Journal Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII Widya Teknik
PK Purwadi
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Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation

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Pengaruh Adanya Kipas yang Mengalirkan Udara Melintasi Kondensor terhadap COP dan Efisiensi Mesin Pendingin Showcase Wibowo Kusbandono; PK Purwadi
Retii Prosiding Seminar Nasional ReTII ke-11 2016
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

The purpose of this study was to determine the effect of air flow through or across the condenser on the characteristics of refrigeration showcase. Airflow across the condenser in this study carried out by a fan mounted near the condenser. Characteristics of refrigeration showcase examined included Coefficien of Performance (COP) and efficiency. Research carried out on showcase refrigeration works by using the vapor compression cycle. The vapor compression cycle, has major components: a compressor, evaporator, capillary tube and condenser. Another component is installed filter and tool control temperature inside the cold room showcase. The compressor of the showcase that is used has a power of 1/6 PK, while the other main component size adjusts to the amount of power the compressor. R134a refrigerants used are environmentally friendly. Variations of research conducted on the number of fans that works used in the condenser air stream which passes through: (a) without fan (b) 1 fan is working and (c) 2 fan is working. Fans cool air flow that is used each have the power: 63 watts. Showcase space size: 170 cm x 55 cm x 40 cm. The cooling load in the form of 20 bottles of water by volume per 1 liter bottle of water. Research results: the flow of air passing through the condenser effect on the value of the COP and engine efficiency showcase: (1) to the condenser without a fan, the COP value of 3.23 and an efficiency of 0.76 (2) to the condenser with 1 fan, COP value of 3.56 and an efficiency of 0.77 and (3) to the condenser with 2 fans, COP value of 3.80 and an efficiency of 0.81. Keywords: showcase, vapor-compression, condenser, air-flow.
Inovasi Mesin Pengering Pakaian yang Praktis, Aman dan Ramah Lingkungan PK Purwadi; Wibowo Kusbandono
Widya Teknik Vol. 15 No. 2 (2016)
Publisher : Fakultas Teknik, Universitas Katolik Widya Mandala Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33508/wt.v15i2.915

Abstract

Pada saat ini mesin pengering pakaian sangat diperlukan terutama pada saat musim hujan tiba atau ketika sinar matahari sulit untuk diperoleh. Tujuan dari penelitian ini adalah mendapatkan mesin pengering yang praktis, aman dan ramah lingkungan. Hasil dari pengeringan pakaian ini adalah kondisi pakaian kering yang siap untuk disetrika. Mesin pengering pakaian yang diteliti mempergunakan sumber energi dari listrik. Energi listrik dipergunakan untuk menggerakkan kompresor rotari dan kipas angin. Dalam bekerjanya, mesin pengering mempergunakan mesin siklus kompresi uap dengan komponen utama : kompresor, kondensor, pipa kapiler, evaporator dan peralatan tambahan filter. Kompresor yang dipergunakan sebanyak 2 buah, masing masing sebesar 1 PK, sedangkan ukuran komponen yang lain menyesuaikan dengan besarnya daya kompresor. Untuk mengalirkan udara, dipergunakan 2 kipas angin masing masing berdaya 54 watt. Almari pengering dirancang untuk kapasitas 20 pakaian, dengan ukuran p x l x t : 120 cm x 60 cm x 130 cm, dengan sistem terbuka. Mesin pengering pakaian yang dirakit (a) mampu mengkondisikan udara di dalam lemari tanpa beban, pada suhu udara kering (Tdb) 59,5oC dan dengan kelembaban udara (RH) sekitar 5%. (b) mampu mengeringkan 20 pakaian baju basah hasil perasan tangan sekaligus dalam waktu 120 menit dan mampu mengeringkan 20 pakaian baju basah hasil perasan mesin cuci sekaligus dalam waktu 60 menit. Untuk 15 pakaian basah hasil perasan tangan diperlukan waktu 110 menit. Kata kunci : mesin pengering pakaian, siklus kompresi uap, kecepatan pengeringan.
Co-Authors Wibowo Kusbandono