Abstrak-Biogas merupakan salah satu gas alam yang dapat terbakar, kandungan yang paling banyak diobservasi dalam penelitian ini adalah gas metana (CH4), hidrogen (H2) dan karbon dioksida (CO2), hal inilah yang menjadikan biogas dapat dikembangkan dan digunakan sebagai energi alternatif. Namun pada umumnya plant biodigester yang digunakan untuk memproduksi biogas masih sangat sederhana, sehingga dibutuhkan perancangan sistem yang dapat membantu proses monitoring produksi biogas. Pada penelitian ini dirancang sebuah sistem yang dapat melakukan proses akuisisi data menggunakan sensor gas metana MQ4, sensor gas hidrogen MQ8 dan sensor gas Karbon dioksida MG811 serta parameter yang berpengaruh pada proses produksi biogas seperti suhu, kelembaban dan tekanan. Berdasarkan pengukuran terhadap gas metana, didapatkan titik tertinggi produksi gas terjadi pada pukul 10:00 dengan kondisi pengukuran suhu: 34°C, kelembaban: 67%RH, dan tekanan: 100,6 kPa menghasilkan gas metana sebesar 95.672 ppm. Untuk pengukuran gas hidrogen didapatkan titik tertinggi produksi gas terjadi pada pukul 14:00 dengan kondisi pengukuran suhu 34°C, kelembaban 74%RH, dan tekanan 100,4 kPa menghasilkan gas hidrogen sebesar 4,378 ppm. Pada pengukuran gas karbondioksida titik tertinggi produksi gas terjadi pada pukul 11:00 dengan kondisi pengukuran suhu 33°C, kelembaban 68%RH, dan tekanan 100,5 kPa menghasilkan gas karbondioksida sebesar 16,89 ppm. Kata Kunci : Biodigester, Sistem Monitoring, Biogas, DAQAbstract-Biogas is one of the flammable natural gas. The most observed content of biogas in this study is methane (CH4), hydrogen (H2) and carbon dioxide (CO2). Therefore, biogas can be developed and used as an alternative energy. Nowadays, the used of plant biodigester, as the biogas producer, is still in very simple design. So, the system design should be developed to assist the monitoring process of biogas production. In this study, a system is design which can do the data acquisition using MQ4 sensor of methane, MQ8 sensor of hydrogen and MG811 sensor of carbon dioxide also the parameter which influencing to the process of biogas production such as temperature, humidity and pressure. Based on the measurement of methane, it is spotted that the highest point of methane production occured at 10:00 a.m. The details were the temperature 34 °C, humidity 67% RH, and pressure 100,6 kPa which can produce 95.672 ppm of methane. In the measurement of hydrogen, it is figured out that the highet point of hydrogen production occured at 02:00 p.m. The details were the temperature 34 °C, humidity 74% RH, and a pressure of 100,4 kPa to produce 4,738 ppm of hydrogen. Then, the highest point of the measurement of carbon dioxide production occurred at 11:00 a.m. The details were temperature 33 °C, humidity 68% RH, and a pressure of 100,5 kPa to 16,89 ppm of carbon dioxide.
Technological developments in the health sector for the safety of neonates are essential. Such efforts are needed to curb the increase in premature infant mortality cases caused by bacteria, asphyxia, infections, and poor management of facility equipment. Furthermore, preterm and other at-risk babies have low ability to regulate temperature and produce body heat as characterized by their dry skin conditions; hence, the need for baby incubators. For their operation, these baby incubators provide strict regulated energy change that is influenced by heat transfer caused by the surrounding atmospheric temperature and humidity. This paper presents the design, construction, and performance study of a proposed Fuzzy-PID hybrid control system for regulating temperature and humidity in a baby incubator. To accomplish its goal, the proposed controller must be able to distribute heat and maintain humidity in the incubator under fluctuating atmospheric conditions to keep the baby’s body warm. Performance tests of the proposed hybrid controller were conducted by comparing temperature and humidity outputs in the baby incubator against predetermined expected values. Results show that the proposed controller is able to successfully achieve and maintain the temperature and humidity set points. Further examination also suggests that the proposed Fuzzy-PID hybrid control offers an improved overall system response performance compared to the PID controller.
Abstrak-Pada penelitian ini diusulkan rancang bangun low power elektro surgery (LPES), pisau bedah listrik, pada frequency 10KHz yang digunakan dalam pengujian daging. Alat ini terdiri dari rangkaian power supply, regulator tegangan, dan pencacah frequency. Tujuan penelitian ini diharapkan meminimalisir terjadinya spark over dan terjadinya luka bakar. Hasil pengukuran menunjukan bahwa alat ini bekerja dengan daya sebesar 26 Watt dan frekuensi sebesar 11,16 KHz. Electric surgery ini diuji coba terhadap daging kerbau, daging kambing, dan daging sapi. Pada daging sapi dengan menggunakan tegangan 28,7 Volt membutuhkan waktu 51 detik, dengan menggunakan tegangan 28,1 Volt membutuhkan waktu 53 detik, dengan menggunakan tegangan 27,8 Volt membutuhkan waktu 57 detik. Pada daging kambing dengan menggunakan tegangan 28,7 Volt membutuhkan waktu 30 detik, dengan menggunakan tegangan 28,1 Volt membutuhkan waktu 41 detik, dengan menggunakan tegangan 27,8 Volt membutuhkan waktu 49 detik. Pada daging kerbau dengan menggunakan tegangan 28,7 Volt membutuhkan waktu 52 detik, dengan menggunakan tegangan 28,1 Volt membutuhkan waktu 56 detik, dengan menggunakan tegangan 27,8 Volt membutuhkan waktu 59 detik. Jika dibandingkan dengan hasil penelitian lainnnya, penelitian ini memiliki daya rendah dan frekuensi rendah, sehingga dapat meminimalisir terjadinya spark over dengan kecepatan proses pemotongan yang baik. Kata Kunci : Pisau bedah listrik, low power, spark over, kecepatan pemotoangan.Abstract-In this study, It is proposed a design of electric surgery on 10 KHz. This device consists of a power supply circuit, a voltage regulator, and a frequency counter. The purpose of this study is expected to minimize the occurrence of spark overs and the occurrence of burns. The measurement results show that LPES is working with a power of 26 watts and a frequency of 11.16 KHz. Electric surgery was tested against buffalo meat, mutton and beef. In beef by applying a voltage of 28.7 volts takes 51 seconds, using a voltage of 28.1 volts takes 53 seconds, using a voltage of 27.8 volts takes 57 seconds. In goat meat by using a voltage of 28.7 volts takes 30 seconds, using a voltage of 28.1 volts takes 41 seconds, using a voltage of 27.8 volts takes 49 seconds. In buffalo meat by using a voltage of 28.7 volts takes 52 seconds, using a voltage of 28.1 volts takes 56 seconds, using a voltage of 27.8 volts takes 59 seconds. Compare to another electric surgery, this study had low power and low frequency, so as to minimize the occurrence of spark over with good speed cutting process.
Pasokan listrik Rumah Tinggal selama ini disuplai oleh PLN dengan waktu operasi 24 jam, dibutuhkan suplai tambahan energi terbarukan untuk menjadikan rumah yang mempunyai energi mandiri. Penelitian ini bertujuan merancang dan membangun sistem penyedia energi listrik tenaga surya untuk membantu pasokan listrik rumah tinggal pada skema pembangkit listrik hibrida PLTS-PLTB-PLN. Sistem PLTS dimanfaatkan untuk mengurangi pemakaian energi yang di suplai PLN. Hasil penelitian menunjukkan telah dirancang sistem PLTS pada skema pembangkit hibrida PLTS-PLTB-PLN dengan kapasitas inverter 1000W dengan gelombang kotak termodifikasi, baterai 17,28Ah, pembangkitan panel surya sebesar 92,11Wp. Hasil pengujian menunjukkan besarnya energi optimal yang dihasilkan PLTS adalah sebesar 297Wh/hari atau sebesar 5,25% sedangkan kontribusi PLTB 0,33%.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.