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All Journal Journal of Engineering and Technological Sciences Jurnal Rekayasa Mesin JADECS (Journal of Art, Design, Art Education and Culture Studies) Jurnal POLIMESIN JTT (Jurnal Teknologi Terapan) International Journal of Applied Technology Research Jurnal Difusi Industrial Research Workshop and National Seminar Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII
Kasni Sumeru
Department Of Refrigeration & Air Conditioning Engineering, Politeknik Negeri Bandung
Aerospace Engineering Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry 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 Physics Social Sciences Transportation Other

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Numerical Study of an Ejector as an Expansion Device in Split-type Air Conditioners for Energy Savings Sumeru, Kasni; Sulaimon, Shodiya; Ani, Farid Nasir; Nasution, Henry
Journal of Engineering and Technological Sciences Vol 45, No 2 (2013)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (370.929 KB) | DOI: 10.5614/j.eng.technol.sci.2013.45.2.6

Abstract

The present study describes a numerical approach for determining both the motive nozzle and constant-area diameters of an ejector as an expansion device, based on the cooling capacity of a split-type air-conditioner using R290 as refrigerant. Previous studies have shown that replacement of HCFC R22 with HC290 (propane) in the air conditioner can improve the coefficient of performance (COP). The purpose of replacing the capillary tube with an ejector as an expansion device in a split-type air conditioner using HC290 is to further improve the COP. In developing the model, conservation laws of mass, momentum and energy equations were applied to each part of the ejector. The numerical results show that the motive nozzle diameter remains constant (1.03 mm) under varying condenser temperatures, whereas the diameter of the constant-area decreases as the condenser temperature increases. It was also found that improvement of the COP can reach 32.90% at a condenser temperature of 55 °C. From the results mentioned above, it can be concluded that the use of an ejector can further improve the COP of a split-type air conditioner using HC290 as working fluid.
Numerical Study of an Ejector as an Expansion Device in Split-type Air Conditioners for Energy Savings Kasni Sumeru; Shodiya Sulaimon; Farid Nasir Ani; Henry Nasution
Journal of Engineering and Technological Sciences Vol. 45 No. 2 (2013)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2013.45.2.6

Abstract

The present study describes a numerical approach for determining both the motive nozzle and constant-area diameters of an ejector as an expansion device, based on the cooling capacity of a split-type air-conditioner using R290 as refrigerant. Previous studies have shown that replacement of HCFC R22 with HC290 (propane) in the air conditioner can improve the coefficient of performance (COP). The purpose of replacing the capillary tube with an ejector as an expansion device in a split-type air conditioner using HC290 is to further improve the COP. In developing the model, conservation laws of mass, momentum and energy equations were applied to each part of the ejector. The numerical results show that the motive nozzle diameter remains constant (1.03 mm) under varying condenser temperatures, whereas the diameter of the constant-area decreases as the condenser temperature increases. It was also found that improvement of the COP can reach 32.90% at a condenser temperature of 55 °C. From the results mentioned above, it can be concluded that the use of an ejector can further improve the COP of a split-type air conditioner using HC290 as working fluid.
PM2.5 and PM10 Concentrations at Indoor and Outdoor in Industrial Area Kasni Sumeru; Senia Firlania Novianti; Mohamad Firdaus Bin Sukri
Jurnal Internasional Penelitian Teknologi Terapan Vol 1 No 2 (2020)
Publisher : Bandung State Polytechnic (Politeknik Negeri Bandung)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/ijatr.v1i2.35

Abstract

This study examines the total concentration of particulate matter (PM) in Banjaran, an industrial sub-district located in the south of Bandung. Sampling was conducted using the gravimetric method with a mini particle counter measuring instrument, known as CEM DT-96. Sampling was carried out at a house and a school in 24-hours and five days of working hours. The results show that concentration of PM either during indoor or outdoor condition can be affected by activity, air temperature, air relative humidity, air ventilation area, and particulate deposition rate. In addition, air quality for industrial area was categorized as unhealthy. It is due to PM concentrations exceeding air pollution quality standards as highlighted by Environmental Protection Agency.
Experimnetal Investigation on Outdoor and Indoor PM2.5 and PM10 in Supermarkets in Bandung During Covid-19 Pandemic Kasni Sumeru; Toto Tohir; Neni Emrida Panjaitan; Mohamad Firdaus bin Sukri
Jurnal Internasional Penelitian Teknologi Terapan Vol 2 No 2 (2021): October 2021
Publisher : Bandung State Polytechnic (Politeknik Negeri Bandung)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/ijatr.v2i2.52

Abstract

During the Covid-19 pandemic, the number of visitor at the trade center in Bandung was much reduced as compared to before pandemic, which was only about 30% of normal conditions. The present study is to investigate particulate concentrations of PM2.5 and PM10 in three supermarkets in Bandung, namely Kosambi, Batununggal Modern and Cinunuk supermarkets during the pandemic of Covid-19. Air sampling was measured using a particulate counter CEM DT96 for 11 hours, from 06:00 AM to 5:00 PM, local time. The results showed that the average of outdoor and indoor concentrations of PM10 in two supermarkets (Batununggal Modern and Griya Cinunuk) was lower than standard during that 11 hours. As for the outdoor concentrations of PM2.5, both markets exceeded the standard for several hours in the morning. In general, it can be concluded that the outdoor and indoor concentrations of PM2.5 and PM.10 during pandemic were below the standard, except in the morning before 10:00 AM
Relationship Between Indoor Air Quality and Sick Building Syndrome in Post Office Building in Bandung Yudi Prana Hikmat; Ismail Wellid; Kasni Sumeru; Salma Dzakiyah Az-zahro; Mohamad Firdaus bin Sukri
Jurnal Internasional Penelitian Teknologi Terapan Vol 2 No 2 (2021): October 2021
Publisher : Bandung State Polytechnic (Politeknik Negeri Bandung)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/ijatr.v2i2.53

Abstract

Sick building syndrome (SBS) is a collection of symptoms experienced by buildings occupants such as headaches, mucous, membrane irritation, respiratory problems and fatigue. A building is claimed to have SBS if more than 20% of building occupants experience symptoms. Poor indoor air quality contributes to SBS in the building. This study aims to investigate the correlation between indoor air quality and SBS symptoms in 1st and 2nd floors of the Post office building in Bandung. The study used quantitative methods with a cross sectional study design. Data collection was carried out using particle counter, thermometer, lux meter and anemometer to measure the indoor air quality, while the questionnaire utilized random sampling technique with 119 respondents. The results of the primary data were compared with the air quality standard from Minister of Health No. 1077, 2021. The results of the Statically Compare Means and Independent T-test showed that the p-values of the temperature on the 1st floor and 2nd floors were 0.437 and 0.000, respectively. Meanwhile the p-values of PM10 and PM2.5 on the 1st and 2nd floors were 0.005 and 0.290 and 0.004 and 0.364, respectively, and the p-values of the lighting on the 1st and 2nd floors were 0.002 and 0.015. It indicates that there is a significant relationship between concentrations of PM10 and PM2.5 on the 1st floor with SBS symptoms and the temperature and humidity on the 2nd with SBS symptoms. Since 29 peoples (24% of the building’s occupants) experienced SBS, the building was considered to have a significant potential to cause SBS to its occupant.
Quantitative Approach to Condensate from Residential Air Conditioners with Different Capacity as Drinking Water Kasni Sumeru; Triaji Pangripto Pramudantoro; Cecep Sunardi; Afif Miftakh Hafidzudin; Mohamad Firdaus bin Sukri
Jurnal Internasional Penelitian Teknologi Terapan Vol 3 No 1 (2022): April 2022
Publisher : Bandung State Polytechnic (Politeknik Negeri Bandung)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/ijatr.v3i1.76

Abstract

During operation, the evaporator of split-type air conditioner (A/C) produces condensate water due to lower evaporator temperature, as compared to dew point temperature of the indoor air. So far, the condensate is considered unimportant and therefore being wasted. The split-type A/C is widely used in high-rise buildings, hotels, shopping areas, and even residential. The study aims to investigate the potential feasibility of the condensate to be used as for drinking water. Of course, treatment of the condensate is required before it can be used as a drinking water. The experiments were carried out in two cities, namely Bandung and Cirebon. Bandung represents a city with a cool climate, while Cirebon represents a city with a hot climate. The capacities of the A/C utilized in Bandung and Cirebon are 0.5 HP and 1 HP, respectively. The quantities of the condensate from the A/C were collected for 24 for hours. The quality of the condensate was benchmarked with guidelines/standard from PERMENKES NO 492/MENKES/PER/IV/2010. The benchmarking process involved testing and evaluation of 22 significant parameters related to water quality for drinking purpose. By utilizing waste condensate water, it is predicted that it can be a vital alternative of potable water in the future
PELATIHAN PEMASANGAN DAN PERBAIKAN PENGKONDISI UDARA SEBAGAI BEKAL BERWIRAUSAHA DI KOTA CIMAHI Sumeru Sumeru; Tandi Sutandi
Jurnal Difusi Vol 1 No 1 (2018): Jurnal Difusi
Publisher : Pusat Penelitian dan Pengabdian Masyarakat (P3M) Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/difusi.v1i1.1029

Abstract

Berdasarkan data dari Badan Pusat Statistik, jumlah pengangguran di Kota Cimahi pada tahun 2014 adalah sekitar 55.701 jiwa. Salah satu usaha untuk mengurangi jumlah pengangguran adalah dengan menciptakan lapangan kerja baru dalam bidang pemasangan, perawatan dan perbaikan dalam bidang pengkondisi udara (AC). Tujuan dari program pelatihan ini adalah untuk menciptakan wirausaha-wirausaha baru maupun teknisi-teknisi baru dalam bidang pemasangan, perawatan dan perbaikan AC. Penggunaan AC pada perumahan atau perkantoran akan terus meningkat dengan meningkatnya pertumbuhan ekonomi. Peningkatan penggunaan AC membuka peluang wirausaha baru dalam bidang pemasangan, perawatan dan perawatan AC. Pemasangan, perawatan dan perbaikan AC yang kurang tepat akan menurunkan kinerja AC. Penurunan kinerja AC akan meningkatkan konsumsi energi listrik. Pada pelatihan ini diberikan teknik-teknik pemasangan, perawatan dan perbaikan, sehingga konsumsi energi listrik oleh AC dapat lebih optimal. Peserta pada pelatihan sebanyak 7 orang, dimana 5 orang masih berusia di bawah 30 tahun dan 2 orang telah berusia di atas 40 tahun yang tinggal di Kecamatan Cimahi Utara. Selama pelatihan peserta dibagi menjadi dua grup, dan setiap grup mendapatkan peralatan yang dapat digunakan untuk membuka usaha (bengkel) dalam bidang servis AC. Selama pelatihan para peserta sangat antusias mengikuti program-program yang diberikan dan bersemangat untuk membuka usaha baru dalam bidang servis AC. Kata Kunci: Pelatihan, Pemasangan AC, Perawatan AC, Wirausaha, Kota Cimahi
Analisis Pengaruh Temperatur Udara Luar dan Efisiensi Isentropik terhadap Kinerja Air Conditioning dengan R410A Joshua Putra Nahim; Andriyanto Setyawan; Sumeru Sumeru
Prosiding Industrial Research Workshop and National Seminar Vol 11 No 1 (2020): Prosiding 11th Industrial Research Workshop and National Seminar (IRWNS)
Publisher : Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (884.806 KB) | DOI: 10.35313/irwns.v11i1.2026

Abstract

Penelitian ini menyajikan simulasi analisis pengaruh temperatur udara luar terhadap kinerja sistem air conditioning menggunakan aplikasi coolpack. Perubahan temperatur udara luar menyebabkan kinerja air conditoning berubah. Dengan perubahan temperatur udara luar maka bisa meningkatkan kerja kompresi yang semakin besar, kemudian diikuti oleh penurunan nilai beda entalpi kondenser sehingga mempengaruhi nilai COP (Coefficient Of Performance). Variasi yang dilakukan pada simulasi ini adalah nilai temperatur udara luar 25-45℃ dengan range 2℃, efisiensi isentropik 0.5-0.9, temperatur evaporasi konstan 6℃, dan menggunakan refrigeran R410A. Hasil penelitian menunjukan persentase kenaikan kerja kompresi dengan efisiensi isentropik 0,5 memiliki rentang dari 46,016 kJ/kg hingga 71,968 kJ/kg, lalu pada nilai efisiensi isentropik 0,6 memiliki rentang dari 38,347 kJ/kg hingga 59,974 kJ/kg. kemudian pada nilai efisiensi isentropik 0,7 memiliki rentang 32,939 kJ/kg hingga 51,406 kJ/kg, kemudian pada nilai efisiensi isentropik 0,8 memiliki rentang nilai 28,76 kJ/kg hingga 44,98 kJ/kg, dan pada nilai efisiensi isentrpoik 0,9 memiliki rentang nilai 25,565 kJ/kg hingga 39,982 kJ/kg.. Nilai beda entalpi kondenser dengan efisiensi isentropik 0.5 memiliki rentang dari 209,113 kJ/kg hingga 188,934 kJ/kg, lalu pada nilai efisiensi isentropik 0,6 memiliki rentang dari 201,444 kJ/kg hingga 176,939 kJ/kg, kemudian pada nilai efisiensi isentropik 0,7 memiliki rentang 195,966 kJ/kg hingga 168,371 kJ/kg
Pengukuran Konsentrasi PM10 pada Daerah Industri, SemiIndustri, dan Non-Industri di Kabupaten Bandung Senia Firlania Novianti; Kasni Sumeru
Prosiding Industrial Research Workshop and National Seminar Vol 11 No 1 (2020): Prosiding 11th Industrial Research Workshop and National Seminar (IRWNS)
Publisher : Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (403.929 KB) | DOI: 10.35313/irwns.v11i1.2108

Abstract

Penelitian ini mengkaji jumlah konsentrasi polusi udara partikulat (PM10) pada daerah industri, daerah semiindustri dan daerah non-industri. Polusi udara partikulat adalah material terdispersi di udara, baik padat maupun cair, yang ukurannya 10 μm³. Penelitian ini dilakukan di Wilayah Kabupaten Bandung dengan luas 1.767,96 km² yang dapat digolongkan menjadi tiga daerah tersebut. Polusi tingkat tinggi terjadi di wilayah Kecamatan Banjaran yang tergolong daerah industri, polusi tingkat sedang terjadi di wilayah Kecamatan Cangkuang yang tergolong daerah semi-industri dan polusi tingkat rendah terjadi di wilayah Kecamatan Soreang yang tergolong daerah non-industri. Tingkatan polusi ini dipilih berdasarkan banyaknya pabrik, pepohonan dan sumber polusi lainnya yang berada di sekitar wilayah tersebut. Penelitian ini bertujuan untuk membandingkan hasil pengukuran konsentrasi PM10 pada ke-tiga daerah tersebut. Pengambilan contoh uji (sampling) dilakukan di sekolah pada masing-masing daerah selama lima hari jam kerja. Pengambilan sample menggunakan metode gravimetri dengan alat ukur mini particle counter CEM DT-96. Hasil penelitian ini menunjukan bahwa daerah industri memiliki konsentrasi PM10 di luar ruangan yang melebihi baku mutu polusi udara di Indonesia, sedangkan daerah semiindustri dan daerah non-industri memiliki konsentrasi PM10 di luar ruangan yang tidak melebihi baku mutu polusi udara di Indonesia.
Pengaruh Asap Rokok pada Konsentrasi Partikulat PM10 di Dalam Rumah Nida’Ul Farihah; Kasni Sumeru
Prosiding Industrial Research Workshop and National Seminar Vol 12 (2021): Prosiding 12th Industrial Research Workshop and National Seminar (IRWNS)
Publisher : Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (228.118 KB)

Abstract

Pengaruh Asap Rokok pada Konsentrasi Partikulat PM10 di Dalam Rumah
Co-Authors Ade Hodijah Afif Miftakh Hafidzudin Aji A. B. Andriyanto Setyawan Apip Badarudin Azhar Abdul Aziz Carolina Magdalena Lasambouw Cecep Sunardi Ediana Sutjiredjeki Farid Nasir Ani Farid Nasir Ani Haslinda Mohamed Kamar, Haslinda Mohamed Henry Nasution Henry Nasution Henry Nasution Ismail Wellid Joshua Putra Nahim Kamil Muhammad Gunaprawira Luga Martin Simbolon Luqman Raji Markus, Markus Moh. Farid N. Mohamad Firdaus bin Sukri Mohamad Firdaus bin Sukri Mohamad Firdaus bin Sukri Mohamad Firdaus bin Sukri Mohamad Firdaus Bin Sukri Mohd Farid Muhammad Said, Mohd Farid Muhammad Mohd Rozi Mohd Perang Muhamad Anda Falahuddin Muhammad Idrus Alhamid, Muhammad Idrus Muliawan, Rizki Nani Yuningsih Nazri Kamsah, Nazri Neneng Nuryati Neni Emrida Panjaitan Nida’Ul Farihah Pratama, Nanda Fauzan Ridwan Nugraha Ridwan Nugraha Salma Dzakiyah Az-zahro Senia Firlania Novianti Senia Firlania Novianti Shodiya Sulaimon Shodiya Sulaimon Sri N Yuliawati Tandi Sutandi Toto Tohir Triaji Pangripto Pramudantoro Y Gajawa Yudi Prana Hikmat