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All Journal Jurnal Sains dan Teknologi Journal of Education and Learning (EduLearn) Jurnal Dinamika Pendidikan dan Pembelajaran Jurnal Inovasi Teknologi Pendidikan FLYWHEEL : Jurnal Teknik Mesin Untirta Jurnal Penelitian Pendidikan Journal of Mechanical Engineering Education (Jurnal Pendidikan Teknik Mesin) INVOTEC Jurnal Dinamika Pendidikan dan Pembelajaran Jurnal Dimensi Pendidikan dan Pembelajaran Jurnal RESISTOR (Rekayasa Sistem Komputer) Jurnal Teknik PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Jurnal Teknik Elektro dan Komputasi (ELKOM) Jurnal Pengabdian kepada Masyarakat Nusantara Inovasi Kurikulum Jurnal Abmas
Kamin Sumardi
Universitas Pendidikan Indonesia
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 Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Transportation Other

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THE PERFORMANCE OF VAPOR COMPRESSION REFRIGERATION SYSTEM USING R-1270 Kamin Sumardi; Ega Taqwali Berman; Mutaufiq Mutaufiq
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume 7, Issue 1, April 2021
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v0i0.9998

Abstract

The use of environmentally friendly refrigerants as working fluids in vapor compression refrigeration systems can prevent global warming effects and depletion of the ozone layer. This research aims to obtain data on the performance of the vapor compression refrigeration systems that use R-1270. Refrigerant R-1270 is categorized into the hydrocarbon (HC) group that is environmentally friendly with ODP = zero and GWP <3. Tests were conducted on vapor compression refrigeration system that consisted of a domestic refrigerator (RD) and a chest freezer (CF). The parameters measured in this research were: refrigeration effect, compression work, weight of refrigerant circulated, electricity consumption, coefficient of performance, and the time required to reach the lowest evaporator temperature. In testing, the first step was to conduct a test on the vapor compression refrigeration system that used baseline refrigerant (R-134a) with a weight according to the manufacturer’s recommendations. Then, the second step was to test the performance of the vapor compression refrigeration system that used R-1270 with a mass of 30% of baseline. The test was conducted for 300 minutes by recording the observed data at every 30-minute interval. The results showed that the replacement of baseline refrigerant by R-1270 was able to increase the coefficient of performance of the vapor compression refrigeration system by 13% - 56% and reduce electricity consumption by 13.5% - 19%. This research has implications for the work of compressors that becomes easier and cheaper energy costs.
UJI PERFORMA WALL MOUNTED SPLIT AIR CONDITIONER MENGGUNAKAN REFRIGERAN HC-290 SEBAGAI PENGGANTI REFRIGERAN HCFC-22 Ega Taqwali Berman; Radif Abdul Hapidz; Kamin Sumardi; Mutaufiq Mutaufiq
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume V Nomor 1, April 2019
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v0i0.5448

Abstract

Tujuan dari penelitian ini adalah untuk mengetahui performa wall mounted split air conditioner yang menggunakan refrigeran R-290 sebagai refrigeran pengganti R-22. Pemilihan R-290 karena merupakan bahan alami yang tidak mempengaruhi pada perubahan iklim, memiliki nilai ODP=0 dan GWP=20, harganya murah dan persediannya banyak. Performa dari sistem yang menggunakan R-290 akan dianalisis dan hasilnya dibandingkan dengan performa AC yang menggunakan R-22. Hasil yang diperoleh dari penelitian ini diharapkan memberikan indikasi positif terhadap penggunaan hidrokarbon sebagai refrigeran dalam sistem AC. Sehingga proses penggantian refrigeran (drop-in) dapat direkomendasikan untuk peralatan lama yang masih dipakai tanpa perlu modifikasi sistem dan tetap mempertahankan pelumas yang ada.
Performance Investigation of Cooling Machine Practice Props After Retrofitted by Natural Refrigerants Mutaufiq; Hendri Sulistyo; Kamin Sumardi; Ega Taqwali Berman; Apri Wiyono
Jurnal Teknik: Media Pengembangan Ilmu dan Aplikasi Teknik Vol 20 No 2 (2021): Jurnal Teknik - Media Pengembangan Ilmu dan Aplikasi Teknik
Publisher : Fakultas Teknik - Universitas Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26874/jt.vol20no2.419

Abstract

Resizing the main components of the cooling machine needs to be done after being retrofitted with a new refrigerant. This is done to improve the performance of the cooling engine. In this study, we would like to investigate the effect of adjusting the main components of the cooling machine performance after using new environmentally friendly refrigerants. The experiment was designed on a refrigerator that uses R-134a as a working fluid. The type of hydrocarbon refrigerant used to substitute R-134a is Musicool-22 (MC-22). The cooling load in the evaporator cabin is a salt solution. Testing is done in two stages. In the first stage, the refrigerator operates in its original condition (R-134a with CT1 as the expansion valve). In the second stage, the working fluid R-134a is retrofitted with MC-22 with adjustments to its main components into several variations. Furthermore, the refrigerator performance is measured by comparing the value of the refrigerating effect (RE), the heat of compression, and the refrigerator performance (COP). The test results show that the best refrigerator performance rate is when the refrigerator operates with variation 3 (refrigerant MC-22 with CT2 as the expansion valve), increasing COP values ranging from 0.62% to 2.12%.
Rancang Bangun Sistem Kendali Dan Monitoring Performa Alat Peraga Praktik Refrigerator Mutaufiq Mutaufiq; Asep A. Ruri Irwanto; Ega Taqwali Berman; Kamin Sumardi; Apri Wiyono
Jurnal Teknik Elektro dan Komputasi (ELKOM) Vol 4, No 2 (2022): ELKOM
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/elkom.v4i2.8019

Abstract

Refrigerator merupakan salah satu alat peraga pendidikan di Laboratorium Refrigerasi Universitas Pendidikan Indonesia. Sistem kontrol pada alat ini masih konvensional, seperti refrigerator yang digunakan di rumah-rumah tinggal. Sehingga alat peraga refrigerator tidak dapat digunakan sebagai media pendidikan jarak jauh, seperti saat pandemi Covid-19 yang mewajibkan pendidikan dilaksanakan secara daring. Pada penelitian ini, telah dikembangkan sistem kontrol peraga praktik refrigerator agar dapat diakses secara daring dari rumah tinggal. Sistem kontrol refrigerator dikembangkan menjadi modul SKMP (Sistem Kendali dan Monitoring Performa) refrigerator jarak jauh. Pengembangan dilakukan pada sistem kontrol ON/OFF refrigerator dan sistem monitoring performa refrigerator agar bisa dilakukan secara daring melalui telepon seluler Android. Secara umum tahapan penelitian untuk mengembangkan alat kontrol menggunakan pendekatan research and development yang meliputi concept, design, collecting materials, assembly, dan uji coba. Pengujian dilakukan untuk mengetahui kehandalan kontrol ON/OFF jarak jauh dan mengetahui hasil monitoring performa refrigerator jarak jauh selama 60 menit beroperasi. Hasil penelitian menunjukkan bahwa modul SKMP dapat mengontrol secara ON/OFF alat peraga refrigerator dengan baik melalui telepon seluler. Selain itu performa refrigerator juga dapat diamati dengan mudah melalui aplikasi eWelink pada telepon seluler. Sehingga alat peraga refrigerator yang telah dilengkapi modul SKMP dapat dipertimbangkan untuk digunakan sebagai media belajar secara daring.
Media pembelajaran perpipaan sistem refrigerasi berbasis aplikasi Android Irman Maolani; Kamin Sumardi; Ega Taqwali Berman
Jurnal Inovasi Teknologi Pendidikan Vol 9, No 3 (2022): Desember
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (347.547 KB) | DOI: 10.21831/jitp.v9i3.54103

Abstract

Penelitian ini didasari oleh kebutuhan terhadap media pembelajaran yang inovatif, sesuai kemampuan, murah dan mudah diakses oleh peserta didik. Penelitian ini bertujuan untuk menghasilkan media pembelajaran berbasis aplikasi android yang layak dan dibuat menggunakan web program kodular pada materi perpipaan sistem refrigerasi. Penelitian ini menggunakan metode pengembangan dengan model perancangan, produksi, dan evaluasi. Sampel penelitian ini adalah peserta didik kelas XI TPTU B sebanyak 35 peserta didik. Instrumen penelitian menggunakan non-tes yaitu lembar validasi dan angket respon peserta didik. Hasil penelitian menunjukan penilaian dari pakar media sebesar 87,8% dan 55,3% dari pakar materi. Dengan hasil persentase tersebut bahwa media dinyatakan layak dan dapat digunakan dalam kegiatan proses pembelajaran. Uji coba terhadap peserta didik mendapatkan hasil rata-rata sebesar 87%, hal ini menandakan aplikasi pembelajaran disukai dan mudah digunakan. Rekomendasi dari penelitian ini yaitu penelusuran lebih lanjut efektivitas media pembelajaran perpipaan sistem refrigerasi pada kelompok eksperimen yang lebih banyak dan terkontrol. This research is based on the need for innovative learning media, according to abilities, inexpensive and easily accessible to students. This study aims to produce learning media based on android applications that are feasible and made using codular web programs on refrigeration system piping material. This research uses the development method with design, production, and evaluation models. The sample of this research was 35 students of class XI TPTU B. The research instrument uses non-tests, validation sheets, and student response questionnaires. The study results a show that the media expert assessment is 87.8% and 55.3% from material experts. With the results of these percentages, the media is declared feasible and can be used in learning activities. Tests on students obtained an average mark of 87%; this indicates that learning applications are liked and easy to use. This study concludes that the learning media for piping refrigeration systems based on Android applications with the help of codular web programs is feasible and easy to use by students. This study recommends further investigating the effectiveness of learning media on piping refrigeration systems in more numerous and controlled experimental groups.
Model Kurikulum Pendidikan Layanan Khusus Pendidikan Non Formal untuk Daerah Konflik Kamin Sumardi
Inovasi Kurikulum Vol 5, No 1 (2008): Inovasi Kurikulum, February 2008
Publisher : Himpunan Pengembang Kurikulum Indonesia (HIPKIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (155.745 KB) | DOI: 10.17509/jik.v5i1.35619

Abstract

Curriculum is one important component in education, as specially in learning process. Curriculum must support all the student need, because of it, we need a special curriculum. Every conflict has a different characteristic, but the effect on the child education has the same meaning. Because of that, we have to arrange one of curriculum development and the evaluation more specific by using a special service especially in non forma education. Special service education in non formal education (PLK-PNF) for conflict area, which has a base differentiation in learning process. This special service education has a double mission, for education and ti handle the side effect of conflict as physically and also psychologist.
DEVELOPMENT OF MACROMEDIA FLASH-BASED INTERACTIVE LEARNING MULTIMEDIA IN REFRIGERATION SYSTEMS TO IMPROVE STUDENT LEARNING OUTCOMES Ikhsani, Fahry Nur Khairad; Sumardi, Kamin
Journal of Mechanical Engineering Education (Jurnal Pendidikan Teknik Mesin) Vol 10, No 2 (2023): December 2023
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/jmee.v10i2.64296

Abstract

In order to capture students' interest and improve the effectiveness of learning activities, media must be included in the educational process. The PPE (Planning, Production, and Evaluation). At SMK Negeri 1 Cimahi, the refrigeration system was the topic of a trial in class XI-TPTUP B. 36 students make up the samples. Tests and questionnaires served as the instruments. Interactive learning multimedia built on Macromedia flash was deemed "Very Eligible" with a media feasibility test percentage of 83,35%, according to the results. Acquisition of the 82.5% material due diligence percentage and "Very Eligible" material status. Macromedia flash-based interactive learning multimedia has been well-received. The utilization of interactive learning multimedia based on Macromedia flash is strongly supported by 87,22% of students. The acquisition of an N-Gain value of 0.58 and placement in the moderate category show that interactive learning multimedia built on Macromedia flash is also capable of enhancing student learning outcomes.
Smart Mini Water Chiller Ramah Lingkungan Berbasis Termoelektrik Mutaufiq, Mutaufiq; Yogasmana, Yopi; Berman, Ega Taqwali; Sumardi, Kamin; Wiyono, Apri
Jurnal RESISTOR (Rekayasa Sistem Komputer) Vol. 7 No. 1 (2024): Jurnal RESISTOR Edisi April 2024
Publisher : Prahasta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31598/jurnalresistor.v7i1.1490

Abstract

Chiller merupakan salah satu alat peraga mesin pendingin yang ada di Laboratorium Refrigerasi Universitas Pendidikan Indonesia. Alat ini masih menggunakan sistem refrigerasi kompresi uap sehingga membutuhkan kompresor berenergi listrik besar serta refrigeran sintetik yang kurang ramah terhadap lingkungan. Penelitian ini bertujuan untuk merancang bangun Smart Mini Water Chiller (SMWC) sebagai sistem pendingin yang ramah lingkungan dan hemat energi. Sistem pendingin SMWC dirancang menggunakan termoelektrik yang tidak membutuhkan freon dan kompresor seperti sistem refrigerasi kompresi uap. Sehingga sistem pendingin SMWC ramah terhadap lingkungan dan juga hemat energi listrik. Selain itu sistem pendingin SMWC dirancang menggunakan sistem kendali ON/OFF dan monitoring temperatur melalui telepon seluler. Penelitian telah dilakukan secara eksperimen dengan pendekatan research and development yang meliputi concept, design, collecting materials, assembly, dan uji coba. Pengujian dilakukan untuk mengetahui kehandalan SMWC ketika dioperasikan secara luring dan daring. Hasil pengujian menunjukkan bahwa, SMWC dapat dikontrol secara ON/OFF dan dipantau performanya dari jarak jauh. Temperatur minimum yang dapat dicapai SMWC saat menggunakan beban udara yaitu 4,8 oC dan saat menggunakan beban air sebesar 21,9 oC. Sedangkan rerata konsumsi energi listrik SMWC sebesar 454,67 10-4 kWh untuk beban udara dan 458,08 10-4 kWh untuk beban air.
Kompetensi Digital Guru SMK Menghadapi Tantangan Pembelajaran Digital Masnah, Siti Laily; Komaro, Mumu; Sumardi, Kamin
JURNAL DIMENSI PENDIDIKAN DAN PEMBELAJARAN Vol 12, No 2 (2024): July 2024
Publisher : Universitas Muhammadiyah Ponorogo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24269/dpp.v12i2.9211

Abstract

This study aims to obtain digital competency data for vocational school teachers, digital training that has been attended by vocational teachers, the use of digital infrastructure, and the readiness of schools to face digitalization. The research method used is ex-post facto through a survey with a quantitative descriptive approach. The survey was conducted on 39 teachers at SMKN 8 Bandung. Data is collected through a questionnaire using the Google form. The results of the study showed that the digital competency of vocational school teachers was quite good. On average, 67% of vocational teachers already have digital competence. Teachers who have attended training related to digital competence obtained data of 32%. All teachers have utilized digital infrastructure in schools, but this has not been done optimally. A small number of teachers still experience difficulties in utilizing digital learning infrastructure. School readiness in preparing for digitalization of learning obtained data of 76%. These results show that the digital competency of vocational school teachers and school readiness in facing digitalization must be improved.
Refrigerator Performance With Natural Refrigerant (R1270) Double Pipe Heat Exchanger, Various Capillary Pipe Lengths Sumardi, Kamin; Ratnasari, Asri
JST (Jurnal Sains dan Teknologi) Vol. 12 No. 1 (2023): April
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jstundiksha.v12i1.48287

Abstract

Teknologi refrigerator terus berkembang menuju arah yang lebih baik dan efisien. Refrigerator harus diberikan sentuhan inovasi untuk mendapatkan kinerja yang paling baik. Penelitian ini bertujuan untuk mendapatkan data kinerja refrigerator dengan inovasi double pipe heat exchanger dan variasi panjang pipa kapiler. Metode penelitian yang digunakan yaitu eksperimen. Eksperimen dilakukann pada trainer refrigerator 1/6 PK, perbandingan ukuran double pipe heat exchanger 1/4:1/2, dan variasi panjang pipa kapiler yaitu 1,5m, 2m, 2,5m, dan 2,75m. Diameter pipa kapiler dipertahankan dengan ukuran 0,028 inchi. Refrigeran awal yang digunakan yaitu refrigeran R-134a sebagai kemudian di retrofit dengan metode drop in substitute oleh refrigeran R-1270 sebagai refrigeran yang diuji. Beban yang digunakan adalah air mineral 1,5L. Hasil penelitian diperoleh bahwa penggunaan pipa kapiler 1,5m dan double pipe heat exchanger mampu meningkatkan nilai efek refrigerasi hingga 49%, nilai efisiensi kerja (CoP) meningkat 22% dibandingkan dengan sistem refrigerator yang menggunakan R-134a. Konsumsi daya listrik mengalami penurunan hingga 25%, sehingga mengurangi biaya tagihan listrik. Penelitian ini telah menunjukkan bahwa penggunaan refrigeran R-1270 pada refrigerator dengan double pipe heat exchanger dan panjang pipa kapiler dengan diameter 0,028 inchi meningkatkan kinerja dan lebih hemat konsumsi energi listrik.
Co-Authors Aditya Prabowo Agus Setiawan Amay Suherman Apri Wiyono Ari A. Ramadhan, Ari A. Ariyano Ariyano, Ariyano Asep A. Ruri Irwanto Berman, Ega T Dedi Rohendi Dedi Supriawan, Dedi Dewi Puspita Sari Dewi, Ratu Y Djohar, As’ari Ega T. Berman, Ega T. Ega Taqwali Berman Enang S. Arifiyanto, Enang S. Erika Erika Giantari,, Devinda Naufal Hafidz, Radif A. Haikal Haikal Hardikusumah, Inu Hendri Sulistyo Ikhsani, Fahry Nur Khairad Irman Maolani Iskandar, Novandreas Maman Rakhman, Maman Masnah, Siti Laily Maulana, Muhammad Farhan Muhammad Noor, Ridwan Adam Mulyana, Muhammad I. Mumu Komaro Mutaufiq Mutaufiq Mutaufiq Mutaufiq Mutaufiq Mutaufiq Mutaufiq Mutaufiq, Mutaufiq Nessy Solihati, Nessy Noor, Ridwan A.M. Pramudita, Yulan E. Purnawan Purnawan Radif Abdul Hapidz Ramadhan, Muhammad Oka Ratnasari, Asri Ridwan A.M. Noor Ridwan AM Noor, Ridwan AM Rizal Zenal Muqodas, Rizal Zenal Rusdiana, Herman Salim, Azmi R. salman, Fachrurrazi Saripudin Saripudin Sodikin, Muhamad A Sukandar, Aan Sulistiawan, Febri Suma, Enang Syaeful Ahmad, Syaeful Syamsuri Hasan, Syamsuri Wahid Munawar Yogasmana, Yopi Yulianto, Wisnu D. Yundari, Yundari Zakaria, Asep