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All Journal Jurnal Teknologi Terapan KURVATEK Industrial Research Workshop and National Seminar Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII
Arda Rahardja Lukitobudi
Jurusan Teknik Refrigerasi Dan Tata Udara, Politeknik Negeri Bandung
Aerospace Engineering Humanities 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 Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Transportation Other

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Journal : KURVATEK

 1 
KAJI EKSPERIMENTAL SISTEM MINI BRINE COOLING UNTUK PENDINGIN KABIN DENGAN METODE RADIANT COOLING Arda Rahardja Lukitobudi; Asep Rohmat Hidayat
KURVATEK Vol 3 No 2 (2018): November 2018
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v3i2.1105

Abstract

Pendinginan ruangan  dengan radiant cooling menyerap panas yang masuk melalui proses radiasi dan konveksi dengan menggunakan brine serta mensirkulasikan brine tersebut ke dalam saluran pemipaan yang dipasang secara khusus dengan cara ditanam pada dinding semen, lantai dan atap kabin untuk memberikan suhu yang rendah sebagai penyimpan kalor. Pendingin brine menggunakan sistem refrigerasi kompresi uap dengan secondary refrigerant yaitu larutan propylene glycol sejumlah 33% dari besar volume thermal storage yang dirancang. Desain mini brine cooling ini dibuat agar dapat digunakan sebagai sistem pendinginan umum yang pada penelitian ini menggunakan beban pendinginan tomat 1 kg, menggunakan metode radiant cooling dengan semen sebagai media penyimpan kalor serta untuk menguji performansinya. Dalam perhitungan didapatkan beban total pendinginan sebesar 1152,62 watt. Chilling Time selama 93 menit dengan sistem kompresi uap berkapasitas 1Hp. Temperatur cut off kabin pada temperatur 5 °C dengan media pendingin larutan propylene glycol 33% dan beban produk tomat 1 Kg. COPaktual  yang  didapatkan sebesar 3,70 dan COPcarnot sebesar 4,57 serta nilai efesiensi sistem sebesar 80,96%. Capaian pendinginan brine pada temperatur -3,2 °C dan capaian pendingin produk paling rendah pada temperatur 4,1 °C pada menit ke-430. Kata kunci: radiant cooling, propylene glycol
KAJI EKSPERIMENTAL PENGARUH KONDENSAT UNTUK MENDINGINKAN LIQUID LINE PADA CHEST TYPE MINI COOLER DENGAN METODE RADIANT COOLING Arda Rahardja Lukitobudi; Wendra Luthfi
KURVATEK Vol 5 No 1 (2020): April 2020
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v5i1.1567

Abstract

Liquid line sub cooler by condensate which is produced from chest type mini cooler wall is one of the methods to increase subcool so that the refrigeration capacity will increase and thus will save energy. Condensate which is produced by chest type mini cooler have lower temperature than the ambient temperature so it will decrease the liquid line temperature, where the condensate is flowed through the tube in tube of 30 cm long with 1 inch diameter to cool the liquid line. Radiant cooling is installed by planted evaporator coils in the cement wall where TXV is used as an expansion device with R22 as the refrigerant and 1 hp compressor capacity. Cabin having dimension of 50cm x 50cm x 50cm is cooled upto 5 0C to chilled 1 kg tomatos. The conclusion is that the chilling time with condensate HX is 35 minutes but without condensate HX is 38 minutes. The mean subcool temperature with condensate HX is 3.32 0C but without condensate HX is 0,03 0C. COPactual with condensate HX is 4.49 but without condensate HX is 4.55. System efficiency with condensate HX is 82.26% but without condensate HX is 80.66%. Energy consumption with condensate HX is 0.635 kWh but without condensate HX is 0.701 kWh. Keywords: radiant cooling, condensate, liquid line sub-cooler.
KAJI EKSPERIMENTAL SISTEM DESTILASI ASAP PEMBAKARAN SAMPAH PLASTIK MENJADI BAHAN BAKAR ALTERNATIF DENGAN PENDINGINAN SISTEM REFRIGERASI KOMPRESI UAP Arda Rahardja Lukitobudi; Sugiyarto; Muhammad Setya Ramadhan; Dinda Ainun Qolbi
KURVATEK Vol 5 No 2 (2020): November 2020
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v5i2.2081

Abstract

One step to reduce plastic waste and at the same time to produce alternative fuel is by pyrolysis of smoke destilation of plastic waste burning result because basically the material of plastic waste is hydrocarbon. This research will be discussed about experimaental study of smoke destilator machine of plastic waste burning result using vapor compression refrigeration system in various temperature without analizing the economical factor. There was two step destilation done, using local temperature air and by refrigerated heat exchanger using 35% propylene glycol as secondary refrigerant and with R134A as the primary refrigerant. In destilation step using secondary refrigerant was done by baffled counter flow tube in tube heat exchanger in order to obtain turbulent flow and was done in various temperature that was local temperature air and temperature under 10℃: 9℃, 3℃ and -3℃. The plastic waste which was burnt is 2 kg Low Density PolyEthylene LDPE using reactor with L:40cm x W:40cm x H:60cm and 3 kg elpiji gas burner in temperature of ±400°C. The design was assumed to maximize plastic waste burnt result smoke destilation process. The lower destilation temperature generate the higher alternative fuel volume. During ±4 hours measurement, with temperature of 9℃ generates 480 mL fuel, while 3℃ generates 615 mL fuel, -3℃ generates 710 mL fuel and with local temperature destilation only generates 390 mL fuel.
PERANCANGAN SISTEM BRINE COOLING PADA SHOWCASE DAN KABIN HIDROPONIK UNTUK TANAMAN KANGKUNG (IPOMOEA AQUATICA) Arda Rahardja Lukitobudi; Bowo Yuli Prasetyo; M. Fasya Nur Harish; Dimas Alif Fadhil
KURVATEK Vol 6 No 2 (2021): November 2021
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v6i2.2744

Abstract

Limited area and pollution in the city and also weather problem can become an obstacle to planting kale (Ipomoea Aquatica). Post harvest storage of kale also usually does not conditioned which quickly wilted and not fresh. To create an optimum environment, it was necessary to control environment factors such as air temperature, humidity, light intensity, growing media temperature and humidity, and the availability of nutrients [2]. Tofu and wood waste as a hydroponic nutrients [1] not all area were available so in this research AB Mix nutrient was used. In this research, refrigerated showcase by brine cooling was used [3][4]. Hydroponic planting system method used in this research was Deep Flow Technique which the kale (Ipomoea Aquatica) was planted in a water layer 4-6 cm deep in conditioned showcase of 20-30 0C and 60% humidity. Brine cooling was used to condition the showcase from seed to post harvest and was observed its growth. Post harvest conditioned storage was also complete the showcase more durable. By brine cooling system to cool brine in the range of 70C to 170, the product storage cabin was maintained at 8,70C to 10,50C and the showcase cabin was maintained at 20,40C to 23,60C. The brine cooling system has COPactual of 3,98 and COPcarnot of 6,65 with system efficiency of 59,8%. Keywords: Hydroponic, Ipomoea Aquatica, showcase, brine cooling, Deep Flow Technique.
Co-Authors Ade Suryatman Margana Agus Sopian AP. Edi Sukamto Apip Badarudin Asep Rohmat Hidayat Dimas Alif Fadhil Dinda Ainun Qolbi Evita Rahmania Lestari M. Fasya Nur Harish Mochammad Rafdi Fathur Rahman Muhammad Setya Ramadhan Nurochman B. P Nurshabi Juliansyah Ramdan Prasetyo, Bowo Yuli Sugiyarto Triaji Pangripto Pramudantoro Verino Apriliano P.U Wendra Luthfi