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Rahmat Iman Mainil
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 Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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Pengaruh Beban Pendinginan Terhadap Temperatur Sistem Pengkondisian udara Hibrida Dengan Kondensor Dummy Tipe Trombone Coil Menggunakan Pipa Tembaga Berdiameter 1/4" Sebagai Water Heater Renaldi Khaesar Kumara; Azridjal Aziz; Rahmat Iman Mainil
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The hybrid air conditioning systems can improve the energy efficiency by recovering waste heat of condenser that can be useful for various purposes. There are many experimental studies about this system which aimed to investigate and improve the energy efficiency. This experimental study aims to investigate the effect of cooling loads to system temperatures of hybrid air conditioning with trombone coil type of dummy condenser using 1/4″ diameter of copper pipe as water heater. The system has been tested with several cooling loads as residential cooling load simulation, such as 0 Watt, 1000 Watt, 2000 Watt, and 3000 Watt. The result shows that the maximum water temperature is obtained at 47.30 ˚C with average discharge temperature of 105.45 ˚C in 3000 Watt cooling load after 120 minutes of operation. The more the cooling load applied to simulation room, the more the temperatures of water and discharge increased.Keywords: hybrid air conditioning system, dummy condenser, trombone coil, water heater.
Kinerja Kolektor Pemanas Air Tenaga Surya Menggunakan Bekas Kaleng Minuman Sebagai Absorber Dengan Air Yang Bersirkulasi Pada Pembukaan Katup 30o Eigko Malau; Azridjal Aziz; Rahmat Iman Mainil
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Nowadays, hot water is widely used for bath. For produce hot water, people usually use furnace to boil the water and other use an electricity to heat the water. Research in solar water heater can be the alternative to get hot water without using fossil fuels, replace the furnace and water that used electricity. In this study the solar collector was made the beverage cans as the absorber. The purposes of this study was to achieve the value of efficiency of solar collector and temperature of water at the outlet of storage tank, which the water circulation and a valve were opened at 30o. The dimensions of solar water heater were 2.3 meter in length, 0.8 meter in width and 1.8 meter in height and its volume of 127 L. The solar collector was placed at outside of laboratory Universitas Riau for 9 hours. The data taken from the testing were the temperature of absorber, flow rate, light intensity and temperature of water inlet and outlet. The result of this study showed the second day of the experiment, that was a better efficiency with 34.5%. Whilst, the highest temperature of water circulation was 44.9oC that was occurred in the first day.Keywords: Absorber, Solar Water Heaters, Collector.
Kaji Eksperimental Standby Mode Beban 1000 WATT Pada Residential Air Conditioning Hibrida Sebagai Penyejuk Udara Ruangan Dan Pemanas Air/Pengering Dicky Ikhwandi; Azridjal Aziz; Rahmat Iman Mainil
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

In the Air Conditioning engine, the resulting cooling effect is used to cool the room and the heat effect that is simply thrown into the environment. While, the Hybrid Residential Air Conditioning machine is utilizes the cooling effect and the simultaneous heating effect of the refrigeration machine. Chiller is a cooling system that uses cooling media (water or brine) and HCR-22 as a working fluid. The purpose of this study is to determine the consumption of electrical energy, by using standby mode method with 1000 Watt cooling load in this research got the average value Coefficient Of Performance (COP) of 2.471, average value Performance of Factor(PF) of 3.43, average value Total of Performance (TP) of 5.90. For the average temperature in the cooling chamber is 28.20 0C, the average temperature in the heating chamber is 44.64 0C, with an average compressor power of 1.2680 kW and electricity consumption in 2 hours of working of 2.5359 kWh.Keywords: Air Conditioning, Hybrid Residential, Chiller, Performance, Temperature, Compressor, Electricity.
Pengaruh Beban Pendingin Terhadap Temperatur Sistem Pendingin Siklus Kompresi Uap Dengan Penambahan Kondensor Dummy Tipe Multi Helical Coil Sebagai Water Heater Sarwo Fikri; Azridjal Aziz; Rahmat Iman Mainil
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Increasing the efficiency is one of methods to assist the Indonesian government’s planning in saving energy. One of them is to combine two functions from two different devices become a new device that have two functions. For instance, Split AC is used to cool the room. The adding of dummy condenser in Split AC is using heat exhaust at condenser that functioned as water heater. In this research, it is aimed to identify the effect of adding the dummy condenser toward cooler load. The method used in this research was design and experimental method. Based on the test, When cooler load was given to the room, the more the burden of cooling given, the higher refrigerant temperature to be thus heat water temperature was higher as well. During the operation 120 minutes, it obtained that heat water temperature was 84,110C and refrigerant temperature was 64,770C.Keywords : Dummy Condenser, Temperature, Cooler load and water valve faucet.
Performansi Mesin Refrigerasi Siklus Kompresi Uap Pada Massa 60 Gram Menggunakan Refrigeran Hidrokarbon Nurul Deswita; Azridjal Aziz; Rahmat Iman Mainil
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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An energy saving and sustainable environmental become an attention of the world nowdays. Replacement of halocarbon refrigerant to hydrocarbon give positive impact to the environment because hydrocarbon is friendly refrigeran for environment with low GWP (Global Warming Potensial and zero ODP (Ozon Depleting Potensial). With the replacement refrigerant, it will cause a change performance on refrigeration machine. This study was conducted to determine the effect of hydrocarbon refrigerants with mass amounts of 60 grams on the performance refrigeration machine. The method used in this study was an experimental method to perform the replacement of halocarbons into a hydrocarbon refrigerant with mass amounts of hydrocarbon refrigerants of 60 grams. The results of the study of refrigerant hydrocarbon with mass amounts of 60 grams was found that the required electrical power for compressor of 0.14 kW, power of cooling of 0.73 kW, the heating power of 0.94 kW, and Coefficient Of Performance of 5.21.Keywords: Refrigeration Machine, Refrigerant Mass, Performance, Hydrocarbon Refrigerants
Unjuk Kerja Kolektor Pemanas Air Tenaga Surya Sistem Termosifon Dengan Pemanfaatan Kaleng Minuman Bekas Sebagai Adsorber Gihon Matondang; Azridjal Aziz; Rahmat Iman Mainil
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The beverage cans is one of waste due to human activities. Most of the used beverage cans that can be found in a neighborhood were made of aluminum. Beverage cans at nowadays is often recycled become useful goods. Solar energy is the energy form of light and heat of the sun. solar energy in active used by solar water heater. In the solar water heater, there care collectors that can be used to absorb the sun's heat energy that is usually made of aluminum. This study aims to take advantage of used beverage cans as a collector and a test to determine the ability of the tool to heat the water. Solar water heater has the dimensions of length 2.3 m, width 0.87 m, a height of 1.5 m, and a volume of 127 L. The results reveal that highest temperature of the absorber obtained by 71,1 oC at 12:30 pm. The raising temperature of water in the tank from the initial temperature 28,3oC up to 43,30C.Keywords: Beverage cans, Solar Water Heaters, Collector.
Performansi Residential Air Conditioning Hibrida Dengan Standby Mode Menggunakan Refrigeran HCR-22 Untuk Pendingin Dan Pemanas Ruangan Eko Prasetyo; Azridjal Aziz; Rahmat Iman Mainil
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The hybrid of Residential Air Conditioning (RAC) is a cooling system that utilizes cooling effect and warming effect of refrigeration simultaneously to improve machine performance. Chiller is one of cooling system that used to cool liquid (brine or water) by using HCR-22 refrigerant as the cooling medium and the brine serves as a secondary refrigerant to cooling the room indirectly. Standby mode is a cooling method without using ice or cooling methods from the chiller directly. In this study, the RAC with standby mode is done without cooling load so resulting in a performance with Coefficient of Performance average is 2.46, Factor of Performance average is 3.42, and Total of Performance average 5.88. Then, the average temperature of cooler room is 22.54 ˚C. The average temperature of warmer room is 38.87 ˚C was able to contribute both as warming and it can stability of refrigeration system during process.Keywords : Hybrids RAC, Chiller, Standby mode, Performance, Temperature
Kaji Eksperimental Alat Pengering Tenaga Surya Aktif Pemanasan Langsung (Direct Solar Dryer Active) Berbentuk Jajar Genjang Tipe Kabinet Suprayitno Suprayitno; Azridjal Aziz; Rahmat Iman Mainil
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The direct solar drying model of the parallelogram cabinet type is a dryer of parallelogram shaped, which is intended to produce a uniform temperature distribution, so that the drying results can be uniformly and faster. This research aims to conduct an experimental study of direct solar drying, type of cabinet parallelogram shaped. The dried material was bananas, a drying capacity of 8 kg. Data obtained from this research was the temperature, radiation intensity, and mass reduction in bananas. Based on the data obtained, the average temperature in the drying chamber was 35.18ºC to 59.56ºC. The highest temperature of 62ºC occurred in racks 8 and the lowest temperature of 34ºC occurred in rack 1. The highest mass reduction was 0.301 kg occurred in racks 8 and the lowest mass reduction was 0.237 kg occurred in the first rack. Based on data, the higher of temperature, the mass reduction in the banana would be faster.Keywords: Solar Dryer, Mass Reduction, Drying
Alat Pendingin Dan Pemanas Portable Menggunakan Modul Termoelektrik Tegangan Input 6 Volt Dengan Tambahan Heat Pipe Sebagai Media Pemindah Panas Hendra Abdul Aziz; Rahmat Iman Mainil; Azridjal Aziz
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Portable coolers and heaters use thermoelectric modules with an additional heat pipe as a heat transfer median. This research is to know the cooling temperature that can be achieved by the utilization of thermoelectric heat exhaust as heater with 6 volt input voltage. The effect of heat pipe usage on cooling and heating temperatures is also observed. In this study the use of heat pipe provides a better cooling effect where the temperature is lower than the test without heat pipes for 50 minutes. Achievement of cooling and heating chamber under non-heat-free heat pipe 23.41 oC and 32.36 oC, whereas by using heat pipe the achievement of cooling and heating chamber reaches 22.83 oC and 30.52 oC. Tests by using an additional heat pipe as a heat transfer achievement of cooling chamber and heating chamber become lower compared with testing without heat pipe.Keywords : Thermoelectric, Portable, Heat pipe, Input voltage, 6 volts.
Laju Pendinginan Coolant Ethylene Glycol Pada Mesin Pendingin Type Chiller Untuk Cold Storage Hendrik Syahputra; Azridjal Aziz; Rahmat Iman Mainil
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Refrigeration a necessity in life today's, especially for urban communities. Refrigeration can be in domesticrefrigerators, cold storage, refrigeration of vegetables, fruits, meat, drinks and so on. Vapor compression refrigerationsystem also used in HVAC applications. The aim of this refrigerating cools machine the coolant ethylene glycol so thatthe temperature is below 0°C for cold storage. Coolant ethylene glycol functions as a heat absorber that in cold storage,cold storage cooling at a rate influenced by temperature changes in and out in the cold storage, the greater the heatabsorbed by the coolant ethylene glycol, the greater the cooling rate.Keywords: Cooling machine, cold storage, coolant ethylene glycol, refrigerant
Co-Authors Abd. Rasyid Syamsuri Adha, Aidil Adi Hans Purba Adriyus putra Afdhal Kurniawan Mainil Ahmad Surya Ahmad Wisnu Sulaiman Anggriawan, Akbar Anita Susilawati Atria Martina Aulian Samri Awaludin Martin Aziz, Azdrizal Azridjal Aziz Bungsu Herwanto Cahyati, Wulan Dani Ikhsan Putra Darfia, Novreta Deni Kurniawan Dicky Ikhwandi Eigko Malau Eko Saputra Faisal Afif Faisal Tanjung Farida Isroani Ferly Septian Iskandar Gihon Matondang Giri Saputra Gontor Andrapica Gordon HTTM Hasra Rafika Helmizar - Hendra Abdul Aziz Hendrik Syahputra Henni Syawal Herisiswanto ' Herisiswanto, Herisiswanto Irwandi Hidayat Izzuddin Ali Raja Siregar, Izzuddin Ali Raja Izzudin Ali Raja Siregar Jenvrizen, David KHOIRUL ANAM Khotso Sai Listiono, Hendra luthfi afiif yazu Muh Wira Tri Kusuma, Muh Wira Tri Muhammad Faizal Syukrillah Muhammad Faizal Syukrillah, Muhammad Faizal Muhammad Ilham Muhammad Rif’at Syahnan N. Nazaruddin Nasution, Fikri Fahlevi Nofriadi Nofriadi Novreta Ersyi Darfia NST, Berriansyah Cipta Nugrah Suryanto Nurcholish Windiharto Nurman Saputra Nurul Deswita P. Eko Prasetyo Perima, Yoan Purba, Adi Hans Putra, Rio Ahmad Juliansyah Rahman Asfaranda Renaldi Khaesar Kumara Renhard Niptro G, Renhard Niptro Renhard Niptro Gultom Ridwan Abdurrahman Ruben Siregar Saberina Hasibuan Sarwo Fikri Sayfri Syafri Solly Aryza Suprayitno Suprayitno Surya, Ahmad Syafri ' Teguh Irawan Thalal, Thalal Tio Vani Nesri Utari Prayetno Wandi Wahyudi Yandra, Vicky Yoan Perima Yovan Witanto