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All Journal Jurnal Kesehatan Masyarakat Andalas (Andalas Journal of Public Health) Jurnal Optimasi Sistem Industri Journal Industrial Servicess JOURNAL OF INDUSTRIAL AND MANUFACTURE ENGINEERING INVOTEK: Jurnal Inovasi Vokasional dan Teknologi Syntax Literate: Jurnal Ilmiah Indonesia Seminar Nasional Teknologi Informasi Komunikasi dan Industri Jurnal Hilirisasi IPTEKS (JHI) Eksos Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks Journal of Educational Administration and Leadership (JEAL) Jurnal Life Science Education Journal: General and Specific Research Jurnal Bintang Pendidikan Indonesia JPLED Jurnal Teknologi
Lusi Susanti
Universitas Andalas
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Mechanical Engineering Medicine & Pharmacology Public Health Social Sciences Transportation Veterinary Other

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Pemilihan dan Implementasi Strategi Peningkatan Kenyamanan Termal Ruang Kuliah Lusi Susanti; Hary Fandeli
Jurnal Optimasi Sistem Industri Vol. 16 No. 2 (2017): Published in October 2017
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v16.n2.p112-119.2017

Abstract

Optimum conditions help us think and work better. Thermal comfort in lecture buildings is important to maintain students’s comfort and help them concentrate on study. The fastest way to achieve expected thermal comfort inside the lecture room is using air conditioner, however, compensation on high electricity bills and degradation of the environmental quality has to be made. Therefore, the aim of this paper is to find and promote several environmental friendly strategies which can provide comfort to users in one hand, but also can reduce energy consumption in another hand. There have been several strategies in records to increase thermal comfort in buildings. To select the best and the most appropriate alternative, Analytical Hierarchy Process method was used by setting the criteria, sub-criteria, and alternatives to increase thermal comfort in lecture buildings of Andalas University. To test the selected alternative, thermal comfort inside two lecture rooms were evaluated experimentally. The comfort level was evaluated using PMV (Predicted Mean Vote) and PPD (Predicted Percentage Dissatisfied) model. For all experimental conditions, PMV and PPD results and individual thermal vote results showed a good match statistically meaning that the PMV and PPD models could predict thermal condition inside the lecture rooms. Results also showed that the presence of natural vegetation infront of glass windows of the lecture rooms statistically improved thermal comfort sensations of students under natural ventilation mode and reduced thermostat setting under air conditioning mode.
Penyusunan Kriteria Rumah Tinggal Berkonsep Ergo-Ekologi dalam Upaya Peningkatan Kenyamanan Termal Penghuni Lusi Susanti; Sri Zetli
Jurnal Optimasi Sistem Industri Vol. 15 No. 2 (2016): Published in November 2016
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v15.n2.p155-170.2016

Abstract

Nowadays, developers of residential houses often neglect to pay attention about the air circulation as one of the factors that affects thermal comfort zones inside the room environment. In general, people overcome the thermal discomfort using mechanical ventilation such as a fan or Air Conditioning (AC).This study measured the comfort zone of 32 row houses in the Batam city with two types of floor area (LT ≤ 36 m2 and LT > 36 m2). Other variables include Ceiling Height (Tpi), Aperture Area (Vi), Wall Materials (Bhi) and Orientation (Ori) were also considered in this measurement. The results show that thermal comfort zone was influenced by the wall material (Bh1) made from brick, aperture area (V2) > 20% of the floor area, and ceiling height (Tp2) > 3 m. While the house orientation variable can still be received by utilizing the architecture techniques to reduce direct solar radiation. This study also formulated three models of row house design with ergo-ecological concept, which are Ree = f {Lti, Bh, V, Tp2, Ori} atau Ree = f {Lt2, Bh, V, Tp1, Or2} atau Ree = f {Lt1, Bh, V, Tp1, Or1}.
Evaluasi Shift Kerja dan Penentuan Waktu Standar PT X Berdasarkan Beban Kerja Trisna Mesra; Lusi Susanti; Hilma Raimona Zadry
Jurnal Optimasi Sistem Industri Vol. 15 No. 1 (2016): Published in March 2016
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (941.662 KB) | DOI: 10.25077/josi.v15.n1.p16-32.2016

Abstract

PT. X is one of the companies located in Dumai Industrial Region, produces fertilizer. This company has three production plants. The production capacity of the first plant is 450 tons/day, the second plant produces 750 tons/day and the third plant produces 700 tons/day. PT. X is supported by 2 sub companies, they are PT. A and PT. B. PT. A operates 5 bagging lines and PT. B operates 3 bagging lines. The fertilizer bagging process has three steps where each step has its own work station: putting the labeled sack to the hook followed by filling the sack with fertilizer, installing the tie cable, and sewing the fertilizer filled sack. From the initial survey, it was found that the processing time is not optimal to reach production target. PT. A and B have to set 24 working hours per day to run the target resulting on frequent over time, excessive fatigue and the negative impact of physically and mentally for the workers. Author’s hypothesis is the current condition has been one of the reasons for a decline of the production output. Therefore, the purposes of the research are to find the impact of current working hours and shift work pattern on the physical and psychological response of the workers and to calculate the standard time required to complete one cycle of bagging process. This standard time is very crucial to determine production target thus determine the optimal working hours and shift rotation. Measuring of heart rate are collecting results of a questionnaire of NASA-TLX are the parameters used to evaluate the physical and psychological response of workers. Two workers from different group worker, different shift work, from PT. A and PT. B were selected as samples to evaluate their heart rate pattern. The questioner spread out to all workers. Time standard was determined by observing and taking data of 40 bagging cycles for each shift work. The results show that shift work affecting the physiological response of workers in PT. B in the category between moderate to extreme especially for working element of arranging fertilizer sack to the pallet. This result was found for the two group workers. Frequent short rests between times are required to provide quick recovery for the workers and reduce excessive fatigue. Average standard time complete one bagging cycle was 0.12 minutes and 0.13 minutes for PT. A and PT. B, respectively. These standard times can be used to set the production output target for the two companies. Last, short rotation shift work with an additional number of workers is recommended for the shift pattern
Evaluasi Kenyamanan Termal Ruang Sekolah SMA Negeri di Kota Padang Lusi Susanti; Nike Aulia
Jurnal Optimasi Sistem Industri Vol. 12 No. 1 (2013): Published in April 2013
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v12.n1.p310-316.2013

Abstract

This research aims to determine thermal conditions and sensation of thermal comfort in classrooms of high schools in Padang. This study was conducted in 11 State Senior High School (SMA) represented 11 districts in Padang. About 10% of total student body in each schools were participated in this study to vote thermal comfort questioners. To determine thermal comfort level in this study, PMV (Predicted mean Vote) and PPD (Predicted Percentage of dissatisfied) method were used according to standard of thermal comfort in ASHRAE 55-2005 and ISO 7730. PMV method is used to determine scope of situation in the environment that scaled from +3 for very hot until -3 for very cold, and PPD is a method to calculate the number of human (in percentage) dissatisfied with the environment. Calculated PMV and PPD were compared with PMV and PPD resulted from individual vote from questionnaires. Result showed that in general, thermal conditions in classrooms had air temperature and radiant temperature from 27oC – 30oC, air humidity from 68% - 80%, and wind speed of 0 m/s. Calculated PMV from this condition were ranging from +1 slightly warm) until +2 (warm) while PPD calculated greater than 20%. Compared with calculated PMV and PPD values, the individual vote showed values from +0,5 (neutral) until +1 (slightly warm) while PPD values of individual vote greater than 20% except for SMA 2 and SMA 11 Padang. It is concluded that improvements of indoor thermal conditions have to make inside classrooms as well as landscape outside in order to improve thermal comfort level of students during learning and teaching.
Co-Authors Afri Adnan Afrinaldi, Feri Ahmad Sabandi Ahmad Syafruddin Alexie Herryandie Alfadhlani Alizar Hasan Angga Baresky Asep Rohayat Asmuliardi Muluk Candra Putra Gusriadi De Budi Irwan Taofik Desi Ratnasari Desi Tri Triana Desto Jumeno Desto Jumeno Dicky Fatrias Difana Meilani Dina Rahmayanti Dwi Gantia Elita Amrina Eri Wirdianto Ermita Ermita Fatma Wila Feida Noorlaila Isti’adah Firman Firman Fitra Fitra, Fitra Hary Fandeli Henmaidi Henmaidi Herwina Aprila Hilma Raimona Zadry Ikhwan Arief irsyad irsyad Isma Nurul Barokah Jasrial Jasrial Jonrinaldi Kamil, Insannul Khairo Fauzia Rahma Lutfi Raihan Luthfi Fakhri Ramadhan M. Ihsan Ashshiddiqi Nazwa Ramadhani Nelfia Adi Nellitawati Nike Aulia Nike Aulia Nilda Tri Putri Nindi Elissa Nurhaida Nasution Nasution Nurhizrah Gistituati Oki Saputra Oktaviani Oktaviani Prima Fithri Rahmi Elviana Rahmy Vebryanty reinny patrisina Reny Soviana Rifma Rifma Rika Ampuh Hadiguna Rusdinal Rusdinal Salis Iklima Selvia putri, Indri Sri Zetli Sri Zetli Suci Rahmawati Sulastri Sulastri Syahril TATI NURHAYATI Taufik Taufik Tia Ayu Ningrum Tomy Octovieri Trisna Mesra Trisna Mesra Ulfa Nadiatur Rahmi Wisnel Wisnel Yuda, Yuda Maimandre Yumi Meuthia Yumi Meuthia