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Photovoltaic Thermal (PVT) System with and Without Fins Collector: Theoretical Approach Muhammad Zohri; Nurato Nurato; Ahmad Fudholi
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 8, No 4: December 2017
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (585.14 KB) | DOI: 10.11591/ijpeds.v8.i4.pp1756-1763

Abstract

The fins collector design for solar thermal has widely been used and it has a higher thermal efficiency than without Fins. Photovoltaic thermal (PV/T) system produced Electrical and thermal energy instantaneously. Mathematical modeling based on steady-state thermal analysis of PV/T system with and without fins was conducted with matrix inversion method. The value results show that the PV/T system with fins collector is higher thermal and electrical efficiency than without fins.
Exergy Assessment of Photovoltaic Thermal with V-groove Collector Using Theoretical study Muhammad Zohri; Nurato Nurato; Lalu Darmawan Bakti; Ahmad Fudholi
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 16, No 2: April 2018
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v16i2.8433

Abstract

The solution of the environmental problems because of fuel fossil is to use new and renewable energy. There are many studies about energy analysis of solar collector with v-groove but exergy analysis of photovoltaic thermal system with v-groove is still less especially by theoretical study. Photovoltaic thermal with v-groove collector has been conducted the exergy analysis by theoretical assessment. The matrix inversion methods were used to analyze the energy balance equation. The theoretical assessment was conducted under the solar intensity of 385 W/m2, 575 W/m2, and 875 W/m2 and mass flow rate between 0.01 and 0.05 kg/s. The maximum exergy efficiency and exergy of PVT system with v-groove collector were 17.80% and 86.32 Watt at the solar intensity of 875 W/m2.
THE EFFECT OF COCONUT COIR FIBER POWDER CONTENT AND HARDENER WEIGHT FRACTIONS ON MECHANICAL PROPERTIES OF AN EPR-174 EPOXY RESIN COMPOSITE Muhamad Fitri; Shahruddin Mahzan; Imam Hidayat; Nurato Nurato
SINERGI Vol 25, No 3 (2021)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2021.3.013

Abstract

The development of composite materials is increasingly widespread, which require superior mechanical properties. From many studies, it is found that the mechanical properties of composite materials are influenced by various factors, including the reinforcement content, both in the form of fibers and particle powder. However, those studies have not investigated the effect of the hardener weight fraction on the mechanical properties of resin composite materials. Even though its function as a hardener is likely to affect its mechanical properties, it might obtain the optimum composition of the reinforcing content and hardener fraction to get the specific mechanical properties. This study examines the effect of hardener weight fraction combined with fiber powder content on mechanical properties of EPR-174 epoxy resin matrix composite and determines the optimum of Them. The research was conducted by testing a sample of composite matrix resin material reinforced with coconut fiber powder. The Powder content was made in 3 levels, i.e.: 6%, 8%, and 10%. While the hardener fraction of resin was made in 3 levels, i.e.: 0.4, 0.5, and 0.6. The test results showed that pure resin had the lowest impact strength of 1.37 kJ/m2. The specimen with a fiber powder content of 6% has the highest impact strength i.e.: 4.92 kJ/m2. The hardener fraction of 0.5 has the highest impact strength i.e.: 4.55 kJ/m2. The fiber powder content of 8% produced the highest shear strength i.e.: 1.00 MPa. Meanwhile, the hardener fraction of 0.6 has the highest shear strength i.e.: 2.03 MPa.
COATING THICKNESS ANALYSIS OF DEPOSITED FeCrAl SUBSTRATE BY γ-AL2O3 THROUGH NiO-ELECTROPLATING Hadi Pranoto; Nurato Nurato; Dafit Feriyanto
SINERGI Vol 22, No 3 (2018)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (370.39 KB) | DOI: 10.22441/sinergi.2018.3.006

Abstract

Nickel Oxide (NiO) have widely applied in industrial and automotive to forming oxide layer on the substrate due to it have high thermal stability and corrosion resistant. However, NiO was not directly diffused to the substrate via co-precipitation, spray-pyrolysis and sol-gel methods. Therefore, NiO-electroplating was performed in coating FeCrAl substrate by γ-Al2O3 powder. This method was conducted using various time of 15, 30, 45, 60 and 75 minutes, a current of DC power supply is 1.28A and sulphamate type solution. From the data shows that smallest surface roughness (Ra) of NiO-electroplating (EL) samples located at EL 30 min sample for 0.69 µm. Ra of raw material was lower than coated samples due to it performed by coating activity on the substrate. It supported by coating thickness analysis that treated samples has a higher coating thickness up to 11.3 µm. EDS analysis observed some elements on coated and uncoated samples such as Carbon (C) of 4.62-20.67%, Oxygen (O) of 6.16-19.62%, Nickel (Ni) of 6.76-25.14%, Iron (Fe) of 23.96-48.53%, Sodium (Na) of 2.21-9.95%, Chromium (Cr) of 7.97-15.59% and Aluminum (Al) of 2.17-3.12%. Those elements promote to develop a protective oxide layer on FeCrAl at a high temperature of 1000 0C.
ANALISIS KEKUATAN GANDAR PADA KERETA API PENUMPANG Nurato Nurato; Kushardiyanto Kushardiyanto
SINERGI Vol 20, No 2 (2016)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (594.896 KB) | DOI: 10.22441/sinergi.2016.2.003

Abstract

Poros (gandar) merupakan salah satu bagian dari mesin yang cukup penting. Hampir semua mesin meneruskan tenaganya bersama-sama dengan putaran. Peranan utama dalam transmisi seperti ini dipegang oleh poros. Poros (keseluruhannya berputar) adalah untuk mendukung suatu momen putar dan mendapat tegangan puntir atau tegangan puntir dan tekuk. Tulisan ini mencoba menganalisa kekuatan poros pada kereta api penumpang. Analisa menunjukkan bahwa faktor keamanan gandar dalam keadaan statis dengan menggunakan bahan gandar baja ST 60 dengan tegangan yang didapat sebesar 48 kg/mm2 yang dirasa cukup aman karena tegangan yang diperkenankan sebesar 60 kg/mm2.
Kegiatan Iptek bagi Masyarakat (IBM) Karang Taruna dan PKK Desa Kohod Pakuhaji untuk Peningkatan Nilai Tambah dalam Pengolahan Limbah Kelapa sebagai Upaya Peningkatan Pendapatan Masyarakat Yudhi Chandra Dwiaji; Nurato Nurato; Bethriza Hanum
ABDI MOESTOPO: Jurnal Pengabdian Pada Masyarakat Vol 1, No 01 (2018): Januari 2018
Publisher : Universitas Prof. Dr. Moestopo (Beragama)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (174.553 KB) | DOI: 10.32509/am.v1i01.483

Abstract

Kegiatan pengabdian kepada masyarakat ini bertujuan memberikan ketrampilan kepada mitra mengenai teknologi pengolahan limbah kelapa menjadi produk yang bernilai ekonomis melalui transfer teknologi dengan harapan setelah kegiatan ini terlaksana akan tercipta wirausaha baru. Juga diharapkan mitra yang menjadi target mampu menularkan kemampuannya kepada masyarakat sekitar dengan sasaran anggota PKK dan Karang Taruna yang berasal dari desa Kohod, Kecamatan Pakuhaji. Metoda pendekatan dalam menyelesaikan masalah yang ada yaitu dengan melakukan Metode Transfer Teknologi (Ipteks) dan Kewirausahaan (Entrepreneurship), sehingga menghasilkan produk bernilai guna. Kegiatan Pelaksanaan Program Pengabdian pada Masyarakat terbagi menjadi tiga tahap, yaitu persiapan, pelaksanaan, dan tahap monitoring. Luaran dari kegiatan ini adalah berupa produk nata de coco, briket, dan asap cair. Semua peserta dapat mengikuti kegiatan dengan baik. Hal terlihat dari besarnya rasa ingin tahu mereka tentang materi yang diberikan. Kegiatan tindak-lanjut dilakukan setelah para peserta menerapkan beberapa pengetahuan yang disampaikan oleh Tim Pengabdi. Kegiatan tindak-lanjut dimaksudkan untuk mengetahui dampak dari diadakannya kegiatan ini. Kegiatan tersebut berupa adanya kewajiban bagi para peserta untuk mempraktekkan kembali cara pembuatan nata de coco, asap cair dan briket dari tempurung kelapa agar peserta benar-benar bisa dan paham disetiap tahapan proses pengolahan masing-masing produk tersebut. Hasil evaluasi yang telah dilakukan, dapat diketahui bahwa pengetahuan peserta untuk mengolah kelapa meningkat dan membuka pikiran peserta untuk memanfaatkan peluang yang ada untuk meningkatkan pendapatan. Sekitar 85 persen, peserta secara aktif menanggapi positif keterampilan dan pengetahuan yang disampaikan oleh Tim Pengabdi.
Analisis Proses Pemesinan dan Biaya Manufaktur Pembangkit Listrik Tenaga Hidro Mini (PLTHM) Yudhi Chandra Dwiaji; Nurato; Muh. Anhar
Politeknosains Vol 16 No 2 (2017): Jurnal Politeknosains Volume 16 Nomor 2 - September 2017
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Politeknik Pratama Mulia Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (971.947 KB)

Abstract

Indonesia had once become the fuel exporter, it now becomes the fuel importer. To overcome this crisis, then the best option is to increase the utilization of the alternative energy, like what has been conducted in other countries; both developed and developing countries. Renewable energy is a non-fossil energy derived from nature which is designed and cared in such way, it will not be discharged because the amount is unlimited, for example: solar panels, biomass, bioethanol, water energy, heat energy, nuclear energy, tidal energy, wave energy and others. The aim of this research are: 1) to determine the stages in manufacturing process of mini hydro from the early machining process until the final process of quality control, 2) to determine the calculation of the time and costs in the manufacturing process of mini hydro in details. From the analysis of the cost and the manufacturing process of mini hydro, where the generator produces electric energy maximum of 1 KW, driven by a waterwheel that uses frame brackets 50 x 50 x 5 mm, the total cost of making the mini hydro is IDR 6.423.900, it is obtained from the sum of the costs which have been calculated, such as manufacturing cost IDR 5.444.000, design cost IDR 544.400 and unexpected cost IDR 435.500. The required total time in the manufacturing process of mini hydro is 14 hours. The use of micro-hydro energy can be used as an alternative renewable energy to overcome the problems of large power consumption and the provision of electrical energy that is not evenly distributed, especially in rural areas. The use of this micro-hydro is in accordance with the environmental conditions in Indonesia which has a lot of hills and rivers.
Performance analysis of a single-cylinder type steam turbine with a capacity of 3.5 mw using enthalpy drop method Bagus Adi Saputra; Nurato Nurato
SINERGI Vol 27, No 3 (2023)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2023.3.003

Abstract

The performance capability of the steam turbine under factory conditions will experience changes that can be caused by operating or environmental factors. Therefore, it is necessary to analyze the performance of the steam turbine during the actual condition so that it can be compared with the performance of the steam turbine from the manufacturer using mass and energy balance equations on HP heater #1 and deaerators and iteration methods. The research was conducted by looking at the phenomena that occur in the steam turbine using mathematical models and theories when the unit operates according to the heat balance design parameters. Feedwater flow from the calculation of the iteration method based on the equation of the water heater obtained a value of 17,961.58 kg/h. The performance steam turbine experienced a decrease in efficiency with a value for isentropic efficiency of 72.73% down 6.54% from the design value of 79.27% and thermal efficiency of 26.88% down 1.75% from the design value of 28.64%. Meanwhile, the steam rate value of 5.03 kg/kWh increased by 0.44 kg/kWh from the design value of 4.59 kg/kWh, and the turbine heat rate of 3198.83 kcal/kWh, an increase of 196.08 kcal/kWh from the design value of 3002.75 kcal/kWh. 
Electrical Installation Training For Kelompok Karang Taruna Bencongan Indah Nurato Nurato; Yudhi Chandra Dwiaji
Jurnal Pengabdian Barelang Vol 1 No 01 (2019): Jurnal Pengabdian Kepada Masyarakat
Publisher : LPPM Universitas Putera Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33884/jpb.v1i01.969

Abstract

Community service activities aim to provide skills to partners regarding the installation of electricity at home or residence also provide an understanding of the dangers posed by the electricity. And it is expected that the target partners will be able to transmit their abilities to the surrounding community as well as other members of the Youth Organization (Karang Taruna) from Bencongan Indah, Tangerang. The approach method in solving existing problems is by conducting Technology Transfer Methods in the form of direct training. Implementation Activities of The Community Service Program is divided into three stages, namely preparation, implementation, and stages monitoring. Participants can take part in the activity well. It can be seen from the amount of curiosity they had about the material provided. Follow-up activities are carried out after the participants have applied some of the knowledge conveyed by the Service Team. Follow-up activities are intended to determine the impact of this activity. The activity is in the form of an obligation for participants to re-practice and understand the dangers of electricity and how to secure, read installation drawings, measure voltage, detect broken connections and can install home lighting with various switches and sockets in accordance with the requirements General Electrical Installation (PUIL). The results of the evaluations that have been conducted, it can be seen that the participants' knowledge to install lighting in the house increases and opens the mind of the participants to take advantage of the opportunities available to increase income. About 85% of participants actively responded positively to the skills and knowledge conveyed by the team.
PKM Bagi Bank Sampah Kemuning Melalui Inovasi Produk Daur Ulang Limbah Plastik dan Pengelolaan Manajemen Usaha Dwiaji, Yudhi Chandra; Sulistyowati, Niken; Nurato, Nurato; Latudi, Wahyu Hasan; Arvisyah, Diar
Indonesia Berdaya Vol 5, No 4 (2024)
Publisher : UKInstitute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47679/ib.2024936

Abstract

Mitra bank sampah Kemuning adalah tim pembuatan kompos takakura yang terdiri dari 10 orang dan tim bank sampah yang memiliki 8 nasabah yang akhirnya bergabung bersama-sama memfokuskan pada kegiatan daur ulang organik. Bank sampah ini memiliki konsep pengelolaan sampah yang bersifat sosial dan kebersamaan. Permasalahan mitra berada pada kegiatan rutin yang hanya sebatas pada penumpulan, penimbangan dan penjualan, tanpa melalui program daur ulang yang dilakukan sendiri atau melakukan suatu inovasi dari limbah sampah anorganik. Padahal jumlah sampah anorganik yang dikumpulkan mencapai berat 100 kg/siklus. Permasalahan kedua adalah pengelolaan bank sampah yang berjalan saat ini masih bersifat manual. Termasuk manajemen pemasaran produk yang hanya dalam lingkup komunitas dan wilayah sekitarnya. Tujuan PKM adalah transfer iptek dan meningkatkan pengetahuan dalam pengolahan sampah plastik menggunakan mesin pencacah plastik dan mesin injeksi plastik, kemudian memasarkannya di marketplace dan media sosial. Metode pemberdayaan yang digunakan adalah melalui sosialisasi, pelatihan, evaluasi dan pendampingan. Hasil yang diperoleh dari pelaksanaan PKM adalah pengetahuan teknologi terhadap mesin teknologi tepat guna dan manajemen pemasaran mitra meningkat. Mitra juga dapat memperoleh produk yang bernilai jual lebih yaitu cacahan plastik dan produk daur ulang berupa tatakan/alas gelas.