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All Journal Jurnal Surya Teknika Industrial Research Workshop and National Seminar
Budi Suharto
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Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering Other

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Perancangan Fill Pack Cooling Tower Induced Draft Counterflow Pada Sistem Pendingin Alisa Gandini Suganda; Ratu Fenny Muldiani; Budi Suharto
Prosiding Industrial Research Workshop and National Seminar Vol 15 No 1 (2024): Prosiding 15th Industrial Research Workshop and National Seminar (IRWNS)
Publisher : Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/irwns.v15i1.6235

Abstract

Cooling tower merupakan mesin penukar kalor antar dua fluida berupa air dan udara yang terjadi melalui penguapan dan perpindahan kalor secara konveksi. Proses pendinginan air pada cooling tower sangat bergantung pada fill pack sebagai tempat terjadinya perluasan area kontak air dengan udara dalam pertukaran panas. Cooling tower tersebut mengalami penurunan kinerja yang ditandai dengan menurunnya nilai cooling range. Hal ini dikarenakan karena adanya gangguan kerusakan dari fill pack sehingga aliran air yang keluar dari fill pack tidak merata dan temperatur air keluar yang dihasilkan masih tinggi. Salah satu upaya untuk mengatasi masalah tersebut, dilakukan rancangan bentuk fill pack menggunakan metode perhitungan NTU dan simulasi menggunakan software Aspen Plus dengan pendekatan absorber untuk menghasilkan temperatur air keluar. Hasil perancangan manual menghasilkan nilai cooling range sebesar 13,11 °C dan efektivitas sebesar 73,70%. Analisis kelayakan ekonomi diperoleh NPV sebesar Rp 1.585.436.176,44, Payback Period selama 11 bulan, dan IRR sebesar 75%.
Smart Drip Irrigation Control System Otomatis Berbasis IoT Menggunakan Tenaga Surya Sri Paryanto Mursid; Putri Vina Amalia; Budi Suharto
Prosiding Industrial Research Workshop and National Seminar Vol 15 No 1 (2024): Prosiding 15th Industrial Research Workshop and National Seminar (IRWNS)
Publisher : Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/irwns.v15i1.6279

Abstract

Dalam membudidayakan tanaman, kualitas harus seimbang dengan peningkatan kuantitas produksi. Parameter penting seperti kelembapan tanah, suhu udara, kelembapan udara, dan pH tanah harus diperhatikan. Pemantauan parameter ini lebih efektif dengan sistem irigasi berbasis IoT (Internet of Things). Penelitian ini merancang prototipe sistem irigasi tetes otomatis berbasis IoT untuk tanaman hortikultura seperti sawi (Brassica juncea L.) menggunakan tenaga surya. Sistem ini memanfaatkan sensor kelembapan tanah, sensor ultrasonik, sensor DHT22, dan sensor pH tanah yang diatur dengan mikrokontroler NodeMCU ESP32. NodeMCU mengolah data dari sensor dan menampilkannya di Aplikasi Blynk. Pompa air dan solenoid valve dikendalikan berdasarkan pembacaan sensor level tangki air dan sensor kelembapan tanah. Pompa ON saat sensor level tangki air membaca nilai ≥17 cm dan mati saat membaca <5 cm. Solenoid valve ON saat salah satu sensor kelembapan membaca nilai <40% dan mati saat membaca <60%. Pengujian selama 7 hari menunjukkan kinerja sensor dan relay cukup responsif sesuai setpoin. Spesifikasi panel surya dan baterai cukup untuk menyuplai listrik sistem, serta sistem ini menghemat air hingga 0,336 liter dalam 2 hari dibandingkan dengan penyiraman secara manual.
Pengaruh Variasi Udara Pembakaran Terhadap Efisiensi Boiler dengan Menggunakan Perhitungan Metode Langasung dan Tidak Langsung Restu Dwi Ari Zulfikar; Budi Suharto; Indriyani, Indriyani
JURNAL SURYA TEKNIKA Vol. 11 No. 1 (2024): JURNAL SURYA TEKNIKA
Publisher : Fakultas Teknik UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jst.v11i1.7294

Abstract

Boiler type DG1025/17.4 – II 13 Dong Fang Boiler Group Co., Ltd. is a type of boiler is a type of boiler in PLTU Banten 3 Lontar. Boiler efficiency in the steam generation process is influenced by various factors, the most significant of which is how the combustion process occurs in the combustion process occurs in the furnace. Perfect combustin definitely requires a combination of the rught ratio of combustion air and fuel. Based on the result of this researh, it appears that if the actual amount of air flow required for the combustion process is 6.15 kg air/kg coal, then the theoritical air requirements is known to be 8.35 kg air/kg coal. This means that if the actual amount of air flow required for the process is close to the theoritical air flow value, it will indirectly increase the boiler combustion efficiency value. It is proven that when the combustion air variation is the smallest, namely 1050 T/h, it produces a boiler efficiency of 66.82% (direct), then at the largest combustion air variation, namely 1200T/h, it produces an efficiency of 72.40% (direct).
Analisis Efektivitas Cooling Tower Sebelum dan Sesudah Pergantian Filler Pack Mutiara Ghinaul Qalbi; Budi Suharto; Sri Wuryanti
JURNAL SURYA TEKNIKA Vol. 11 No. 1 (2024): JURNAL SURYA TEKNIKA
Publisher : Fakultas Teknik UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jst.v11i1.7326

Abstract

Cooling towers are components used to lower the temperature of condensate water from the condenser, which is pumped through the hot well pump. Given the importance of cooling towers as components used to lower condensate water temperature, the performance of these cooling towers must be maintained. One way to determine the effect of the filler pack is to conduct an analysis to determine the effectiveness parameters of the cooling tower. The analysis was conducted using the range approach and heat transfer methods. The results showed that the heat transfer effectiveness before replacing the filler pack was 68%, while after the replacement, the effectiveness increased to 72%. This indicates that replacing the filler pack has succeeded in increasing the effectiveness of the cooling tower.
Co-Authors Alisa Gandini Suganda Indriyani Indriyani Muldiani, Ratu Fenny Mutiara Ghinaul Qalbi Putri Vina Amalia Restu Dwi Ari Zulfikar Sri Paryanto Mursid Sri Wuryanti