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Azridjal Aziz
Universitas Riau
Aerospace Engineering Agriculture, Biological Sciences & Forestry 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 Nursing Public Health Social Sciences Other

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Difusi Produk Intermediate Baru Very Few Layers Graphene (VFLG) dan Produk Turunannya oleh Inkubator Bisnis Graphene Guard Amri, Amun; Yenti, Silvia Reni; Heltina, Desi; Herman, Syamsu; Aziz, Azridjal; Nadhifah, Evi; Ekwarso, Hendro
Journal of Community Engagement Research for Sustainability Vol. 2 No. 5 (2022): September
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/cers.2.5.217-226

Abstract

Product diffusion of very few layers of graphene (VFLG) and its derivative (car/motorcycle polish) has been carried out by the Graphene Guard business incubator. The steps and strategies began with discussions in a discussion group forum (FGD) inviting experts in order to find the best marketing patterns. In this case the Canvas method was chosen as a marketing strategy. As a follow-up to the results of the FGD, several activities were carried out. Improvements to the system and production capacity were carried out by adding production equipment, innovating production systems and creating production automation systems. The next step was to design brand and logo activities as well as product labels. The design and manufacture of online and offline sales systems were carried out to follow up on increasing production capacity. To increase the effectiveness of marketing, promotional activities were carried out in the form of advertising, creating brochures, production videos and participating in exhibitions. The results obtained indicated that the marketing of the new intermediate product, very few layer graphene (VFLG) and its derivative products in the form of car polishes, was still experiencing diffusion problems, as evidenced by the low sales capacity. This was realized because this product was a new product and was not yet known to the public. Especially for VFLG products, the additional obstacle was that this product was an intermediate product, thus only certain groups of people need it. Evaluation steps are needed for continuous improvement in order to continue to strengthen the diffusion of this product in society.
EVALUASI KINERJA DIRECT EXPANSION SOLAR-ASSISTED HEAT PUMP WATER HEATER KAPASITAS 30 LITER DENGAN MENGGUNAKAN REFRIGERAN R134A Irawan, Teguh; Mainil, Rahmat Iman; Aziz, Azridjal
Jurnal Rekayasa Mesin Vol. 15 No. 1 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i1.1502

Abstract

Experiments were carried out to determine the performance of a direct expansion solar assisted heat pump water heater (DX-SAHPWH) which mainly consists of an evaporator panel with a surface area of ​​0.23 m2, a rotary compressor with an input power of 122.5 W, an insulated water tank that has been wrapped around a condenser with a diameter of 0.024 m and a length of 15 m and a capillary tube with a diameter of 0.001 m and a length of 1.61 m. Tests were carried out in open spaces, enclosed spaces and air-conditioned rooms exposed to direct sunlight. The results of this test are that the highest coefficient of performance (COP) on the DX-SAHPWH system is obtained at 1,25 and the smallest COP is obtained at 0.60. The higher intensity of solar radiation has a positive effect on the performance of the DX-SAHPWH system, which results in the heat transfer rate at water (Q wm) increases, the time required for heating is faster, and the COP of the DX-SAHPWH system increases.
Pengaruh katalis bentonit terhadap produksi minyak pada pirolisis sampah plastik low density polyethylene Mainil, Rahmat Iman; aziz, azridjal; Banjarnahor, Syahdi Fahala
Prosiding SNTTM Vol 23 No 1 (2025): SNTTM XXIII October 2025
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/hn999r48

Abstract

Pyrolysis is the heating of plastic waste at high temperatures with or without oxygen, producing oil, gas, and carbon residue. The use of catalysts in the pyrolysis process can accelerate the conversion of plastics, resulting in better-quality oil. This study aims to examine the potential of oil produced from the pyrolysis of Low-Density Polyethylene (LDPE) plastic with the addition of bentonite clay catalyst as an alternative fuel. The pyrolysis process was carried out experimentally at a temperature of 450 °C with a residence time of 60 minutes, and variations of catalyst composition of 0%, 5%, 10%, 15%, and 20% were tested to obtain the optimum condition. The composition that produced the highest oil yield was then tested at lower temperatures of 350°C and 400 °C with the same residence time. The optimum composition of bentonite clay catalyst was 15% at 450 °C. Without the catalyst (0% composition), the oil yield was 54.2%, which increased to 66% from a total feedstock of 500 g, and when compared to the plastic mass of 425 g, the oil yield reached 82.5%. The density of the oil was 0.766 g/ml, the viscosity was 1.53 cP, and the calorific value was 11302.33 cal/g. LDPE pyrolysis oil with bentonite clay catalyst showed characteristics closer to diesel fuel and kerosene. Thus, LDPE pyrolysis oil has the potential to be used as an alternative substitute for diesel fuel in energy applications.
Kaji performa mesin refrigerasi siklus kompresi uap dengan refrigeran R134a dan refrigeran hidrokarbon sebagai drop-in substitute pada dengan alat ekspansi berbeda Aziz, Azridjal; Parija, Iqbal; Mainil, Rahmat Iman
Prosiding SNTTM Vol 23 No 1 (2025): SNTTM XXIII October 2025
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/d8day211

Abstract

Refrigerant is an essential working fluid in refrigeration system. However, the use of synthetic refrigerant such as R-134a is now restricted due to its high Global Warming Potential (GWP) value. As an alternative, MC-134 as hydrocarbon refrigerant offers more environmentally friendly solution. This research aims to compare the performance of R-134a and MC-134 in a vapor compression refrigeration cycle system, as well as analyze the influence of expansion devices, namely capillary pipes and Thermostatic Expansion Valves (TEV). The test results show that for R-134a, increasing the length of the capillary pipe, increases the Coefficient of Performance (COP) by 20.83% due to decrease in compression work. In contrast, for MC-134, there is  decrease in COP by 3.35%. TEV provides the best performance with an increase in refrigeration effect of 6.05% and COP of 25.07%. However, TEV is not suitable for MC-134 because the low condensing pressure inhibits the phase change to liquid. In the use of 1.25 m and 1.5 m capillary pipes, MC-134 even has a higher COP of up to 16.65% compared to R-134a. Despite this, MC-134 still shows potential as a replacement for R-134a, with 30% of the mass capable of producing twice the refrigeration effect and 7.52% lower electric current consumption.
A Review: Thermoelectric cooler application for portable beverage cooler Fuad, N; Aziz, Azridjal; Iman Mainil, Rahmat
Prosiding SNTTM Vol 23 No 1 (2025): SNTTM XXIII October 2025
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/94ctf896

Abstract

Thermoelectric cooler (TEC) based on the Peltier effect offers a compact, silent, and environmentally friendly portable cooling solution. It can be used to preserve perishable food, medicine on remote area with limited or no electricity. This review explores experimental and theoretical findings from studies published between 2015 and 2025, with focus on portable beverage applications. Key material advances (average ZT ≈ 1–1.4) are traced, dominant thermal management bottlenecks are identified, and emerging optimization methods including artificial intelligence-assisted design are discussed. The system coefficients of performance (COPs) reported for one-stage beverage coolers have remained modest (0.2–0.9). However, recent prototypes have demonstrated the capability to achieve drink temperatures below 5 °C from 25 °C ambient within 30 minutes. These prototypes also show promising pathways for higher efficiency through hybrid photovoltaics, advanced heat sinks, and adaptive control.
Co-Authors Abd. Rasyid Syamsuri Abdurrahaman, Ridwan Adha, Aidil Adi Hans Purba Adriyus putra Afdhal Kurniawan Afdhal Kurniawan Mainil Agus, Rio Masri Ahmad Surya Ahmad Wisnu Sulaiman Amun Amri Arya Bhima Satria Aulian Samri Awaludin Martin Banjarnahor, Syahdi Fahala Boby Hary Hartanto, Boby Hary Bungsu Herwanto Dalil, Mohammad Dani Ikhsan Putra Dani Ikhsan Saputra Delpanro Sitanggang Deni Kurniawan Desi Heltina Dicky Ikhwandi Efendi, Mas Eigko Malau Eko Saputra Evi Nadhifah Faisal Afif Faisal Tanjung Farida Isroani Ferly Septian Iskandar Fuad, N Gihon Matondang Ginting, Hardianto Giri Saputra Gontor Andrapica Gordon HTTM Hasra Rafika Hendra Abdul Aziz Hendrik Syahputra Hendro Ekwarso Herisiswanto ' Herisiswanto Herisiswanto Herisiswanto, Herisiswanto Ida Ayu Putu Sri Widnyani Irwandi Hidayat Iwan Kurniawan Izzuddin Ali Raja Siregar, Izzuddin Ali Raja Izzudin Ali Raja Siregar Jenvrizen, David Jhoni Oberton Kharisma, Oktaf Brillian KHOIRUL ANAM Krisna Bayu Saputra Kusuma, Andi Arief Listiono, Hendra luthfi afiif yazu M Akmal Mainil, Rahmat Imam Muftil Badri Muh Wira Tri Kusuma, Muh Wira Tri Muhammad Faizal Syukrillah Muhammad Faizal Syukrillah, Muhammad Faizal Muhammad Rif’at Syahnan Nofriadi Nofriadi Nugrah Suryanto Nurman Saputra Nurul Deswita P. Eko Prasetyo Parija, Iqbal Prengki Saputra S Purba, Adi Hans Rahman Asfaranda Rahman Putra Mainil Rahmat Iman Mainil Renaldi Khaesar Kumara Renhard Niptro G, Renhard Niptro Renhard Niptro Gultom Reni Yenti, Silvia Ruben Siregar Sarwo Fikri Sarwo Fikri Sayfri Syafri Silvia Reni Yenti Suprayitno Suprayitno Surya, Ahmad Syafri ' Syamsu Herman Teguh Irawan Thalal, Thalal Tio Vani Nesri Utari Prayetno Wandi Wahyudi Willy Setiawan Yandra, Vicky