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All Journal Journal of Architecture & Environment Tesa Arsitektur EPI International Journal of Engineering Jurnal Penelitian Enjiniring Fakultas Teknik Unhas
Rosady Mulyadi
Architecture Department, Engineering Faculty, Hasanuddin University
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering Environmental Science

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SKIN LOAD PERFORMANCE OF DOUBLE-SKIN FACADE IN INDONESIA Rosady Mulyadi; Gyuyong Yoon; Masaya Okumiya
Journal of Architecture&ENVIRONMENT Vol 10, No 1 (2011)
Publisher : Department of Architecture, Institut Teknologi Sepuluh Nopember (ITS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (652.852 KB) | DOI: 10.12962/j2355262x.v10i1.a519

Abstract

Models of double-skin facade with various outer and inner glass skin combinations, distances and orientations has been analyzed using numerical simulation. The results show that the thickness of the glass skin is important in reducing solar heat gain: as the thickness of the glass is increased, solar heat gain decreases. On the contrary, as the distance between the glass skins is increased, thermal transmittance becomes lower. Analysis for the condensation found that throughout the building operation time there is no condensation found at the double-skin facade. In comparison to the single-skin façade, double-skin facade is better in reducing skin load.
The Effect of Air Distribution System Towards Indoor Air Quality (Case Study: Auditorium of Phinisi Tower) Yetti Yunianti Ishak; Baharuddin Hamzah; Rosady Mulyadi
EPI International Journal of Engineering Vol 1 No 1 (2018): Volume 1 Number 1, February 2018
Publisher : Center of Techonolgy (COT), Engineering Faculty, Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This research aims to analyze the type of air distribution system in auditorium, the effect on air quality in the room, as well as the design of appropriate air distribution systems for the auditorium to improve air quality. This study used quantitative methods, by measuring the CO2 gas concentration, air temperature and humidity in room, using the HT-2000 data logger. The measurements were conducted when the room is empty and when the room is occupied. After that, the analysis and simulation were done by using ANSYS-Fluent software. Displacement ventilation distribution system was designed by calculating the total amount of cooling load, the required air flow rate, the air supply temperature, and the return air temperature. The analysis result showed that the mixing ventilation distribution system in the auditorium could not resolve air quality in the room. Based on that results when the room is inhabited, it was known that the lowest and highest value for CO2 concentration level was 973 ppm and 1993 ppm; for air temperature of 20.5oC and 28,6oC; while the room air humidity of 49% and 71%. The displacement ventilation distribution system was designed to overcome the air quality problem in the chamber by air temperature setting was 24oC, the air supply velocity coming from the diffuser was 0.25 m/s, the total surface area of ​​the diffuser was 20.7 m2, and the flow pattern of moving air from the bottom to top of the room.
Air Quality Characteristics in Junior High School Classroom with Natural Ventilation in Pangkep Regency Nur Mutmainnah; Rosady Mulyadi; Baharuddin Hamzah
EPI International Journal of Engineering Vol 2 No 2 (2019): Volume 2 Number 2, August 2019 with Special Issue on Natural Disaster and Mitigat
Publisher : Center of Techonolgy (COT), Engineering Faculty, Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/epi-ije.082019.11

Abstract

The indoor air quality room has turned out to be a major concern due to its adverse effects on human health. This is related to the level of activity of human spend almost 90 percent of their time indoors. This study aims to identify the characteristics of air quality in classrooms with natural ventilation systems in three different schools which vary in topography and the surrounding environment, namely coastal areas, lowlands, and mountains. Air quality measurement focuses on CO, CO2 concentration, total dust content, temperature, humidity, and airflow velocity. The statistical results showed significantly different (p <0.05) in air quality parameters among those three schools. The CO and CO2 concentrations in the three schools are below the recommendations required by DOSH and ASHRAE. This clarifies that a well-used of a natural ventilation system is able to maintain the air quality in the classroom. The measurement of total dust levels was above the threshold required by the Ministry of Health of the Republic of Indonesia No.1405/MENKES/SK/XI/2002. In addition, there was a significant relationship (p <0.05) between air pollutants and meteorological factors such as temperature and air humidity in the classroom. The study found that there was an influence of human activity level and the surrounding environment on the amount of pollutants concentration in the classroom.
The influence of Transit Area in Public Open Space of Losari Beach Makassar Pavilion on the Activities of Group Visitors Miftahul Jannah b; Triyatni Martosenjoyo; Rosady Mulyadi
EPI International Journal of Engineering Vol 4 No 1 (2021): Volume 4 Number 1, February 2021
Publisher : Center of Techonolgy (COT), Engineering Faculty, Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/epi-ije.022021.13

Abstract

Urban communities are social beings who have a high level of activity. One of the activities to release fatigue is a refreshing type of activity. A developing city like Makassar needs open space for the public as a container for community activities, including refreshing activities. The Losari Beach Pavilion is present as an open public space that is visited by the majority of visitors in groups to carry out refreshing activities. This public space has a space configuration whose design is available in several parts of the room as a stopover for visiting activities. This part of the space shows that the activities are overlapping so that space is used in the transit space and some of it becomes empty space. Therefore, this research was conducted to explain the effects of what happens to transit space and empty space, in this case the space that is not functionally stopped. This study used the descriptive qualitative method. The data collection technique uses the behavior mapping method by recording activities and sketches to get an image of the activity pattern carried out by group visitors then presented in tables, pictures and descriptions. The results of the study show that the transit space is a place of stopover because of the influence of spatial area, visibility, historical area, iconic elements, social interaction, while the shelter space was not functionally visited due to the influence of minimizing visibility, social interaction, and arrangement of attribute elements.
Air Quality of a Parking Building in Makassar (A Case Study of Bosowa Tower Parking Building) Nasrul Kulle; Baharuddin Hamzah; Rosady Mulyadi
EPI International Journal of Engineering Vol 4 No 1 (2021): Volume 4 Number 1, February 2021
Publisher : Center of Techonolgy (COT), Engineering Faculty, Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/epi-ije.022021.11

Abstract

This study aims to determine the level of air quality in the parking building based on the pollution content in it (CO, CO2, HCHO and, VOC), to analyze the effect of the weather, intensity of motorized vehicle traffic, and surface elevation to the air quality. The dependent variable is the level of air pollution. The research sample is the Makassar Bosowa Tower Parking Building, data collection was carried out by direct measurement and observation in 12 days from November 24th till December 17th. The research was done using the comparative method, The data processed using the Mann-Whitney difference test, and the Spearman correlation test using SPSS application. The results showed that the average CO levels had exceeded the limit of good air quality, the average of CO2 levels was still within the limits for good air quality, and the average of HCHO and VOC levels were mostly within the limits for good indoor air quality, according to The Indonesia Minister of Health Regulation Number 1077 in 2011. The result of measurements and tests shows that the changes in the weather do not have a significant effect on the air quality. The amount and the intensity of motorized vehicle traffic affect the air quality, especially during rainy weather.
Kenyamanan Termal Sekolah Menengah Pertama Negeri di Wilayah Pesisir, Dataran Rendah dan Pegunungan di Kabupaten Pangkajene Kepulauan Andi Yunita; Baharuddin Hamzah; Rosady Mulyadi
Jurnal Penelitian Enjiniring Vol 22 No 2 (2018)
Publisher : Center of Techonolgy (COT), Fakultas Teknik, Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (412.765 KB) | DOI: 10.25042/jpe.112018.03

Abstract

Penelitian ini bertujuan menganalisa tingkat kenyamanan termal ruang kelas Sekolah Menengah Pertama Negeri pada wilayah pesisir, dataran rendah dan pegunungan, dan menganalisa perbedaan kenyamanan termal ruang kelas Sekolah Menengah Pertama Negeri di wilayah pesisir, dataran rendah dan pegunungan. Penelitian ini menggunakan metode Survei pengukuran objektif berupa pakaian yang digunakan dan aktifitas siswa, dan data parameter lingkungan berupa temperatur udara, kelembaban relatif, dan kecepatan aliran udara, serta pengukuran subyektif meliputi mengukur tingkat kenyamanan termal yang dirasakan oleh siswa dengan mengisi kuisioner survei kenyamanan termal, dengan menggunakan kuisioner survey kenyamanan termal dari ASHRAE Standar 55. Hasil penelitian menunjukkan secara statistik perbedaan signifikan (p<0.05) parameter temperatur dan kelembaban relatif pada tiga sekolah, dimana temperatur berada diatas batas kenyamanan yang dipersyaratkan MENKES NO.261/MENKES/SK/II/1998 sedangkan kelembaban hanya di dataran rendah yang diatas 60% yang dipersyaratkan Balai Meteorologi dan Klimatologi, 2003, namun untuk kecepatan udara perbedaannya tidak signifikan dan berada pada batas nyaman menurut Vector Olgay. Responden sebagian besar merasa nyaman dan menerima parameter lingkungan yang ada karena sudah terbiasa dengan temperatur yang ada namun tetap menginginkan sedikit sejuk. Studi menemukan bahwa ada pengaruh pakaian yang digunakan, kondisi lingkungan terutama vegetasi, dan ketinggian lokasi serta aklimatisasi (adaptasi tubuh terhadap lingkungan sekitar) terhadap kenyamanan termal ruang kelas disekolah.
Pengaruh Pembayangan terhadap Kenyamanan Termal pada Rumah Tinggal di Perumahan Bukti Baruga Antang Makassar Jumriya Jumriya; Rosady Mulyadi; Baharuddin Hamzah
Jurnal Penelitian Enjiniring Vol 23 No 1 (2019)
Publisher : Center of Techonolgy (COT), Fakultas Teknik, Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (366.011 KB) | DOI: 10.25042/jpe.052019.03

Abstract

Abstrak_ Penelitian ini dilakukan dengan mengukur kenyamanan termal alami dan mengetahui seberapa besar pengaruh tanaman peneduh terhadap kenyamanan termal alami didalam rumah tinggal. Rumah tinggal dikelompokkan menjadi dua kelompok yaitu rumah tinggal yang ada tanaman peneduh dan rumah tinggal yang tidak ada tanaman peneduh. Data pengukuran statis dilakukan dengan beberapa variabel kenyamanan berupa suhu, kelembaban, dan kecepatan angin kemudian diukur menggunakan alat HOBO temp/RH logger dengan waktu pengukuran dari pukul 06.00-18.00 WITA. Hasil penelitian menunjukkan bahwa rata-rata temperatur tertinggi untuk rumah tinggal yang ada tanaman peneduh 30,2°C dan rumah tinggal yang tidak ada tanaman peneduh 31,3°C. Kemudian rata-rata kelembaban tertinggi rumah tinggal yang ada tanaman peneduh 73% dan yang tidak ada tanaman peneduh 73%, dengan ini kelembaban berada pada zona yang nyaman. Sedangkan hasil rata-rata 0,19 m/s untuk kecepatan angin tertinggi rumah tinggal yang tidak ada tanaman peneduh dan 0,65 m/s rumah tinggal yang ada tanaman peneduh. Hasil survey kenyamanan penghuni menunjukkan sebagian responden masih merasa nyaman namun tetap mengharapkan kondisi kenyamanan termal yang lebih sejuk lagi. Responden beradaptasi dengan kondisi lingkungannya dengan cara memilih pakaian yang nyaman dan tipis serta mengurangi kegiatan yang menimbulkan banyak keringat. Kata kunci : Kenyamanan Termal, Tanaman Peneduh, Rumah tinggal, Responden penghuni. Abstract_ This research was conducted by measuring natural thermal comfort and knowing how much influence the shade plants have on natural thermal comfort in the house. Dwellings are grouped into two groups namely dwellings with shade plants and dwellings with no shade plants. Static measurement data is carried out with several comfort variables in the form of temperature, humidity, and wind speed and then measured using a HOBO temp / RH logger tool with measurement time from 06.00-18.00 WITA. The results showed that the average highest temperature for houses with shade plants was 30.2 ° C and houses without shade plants were 31.3 ° C. Then the highest average humidity of residential houses with 73% shade plants and 73% without shade plants, with this humidity is in the comfort zone. While the average yield of 0.19 m / s for the highest wind speed of houses without shade plants and 0.65 m / s of shade houses. The results of the occupants comfort survey show that some respondents still feel comfortable but still expect cooler conditions of thermal comfort. Respondents adapt to environmental conditions by choosing comfortable and thin clothing and reducing activities that cause a lot of sweat. Keywords : Thermal Comfort, Shade Plants, Residential Houses, Resident Respondents
Thermal Comfort Identification of Traditional Bugis House in Humid Tropical Climate Sahabuddin Latif; Baharuddin Hamzah; Ramli Rahim; Rosady Mulyadi
Tesa Arsitektur Vol 17, No 1: Juni 2019
Publisher : Unika Soegijapranata Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24167/tesa.v17i1.1803

Abstract

This study aims to determine the thermal comfort conditions in the interior of traditional Bugis houses in South Sulawesi. This phase measured 18 (eighteen) houses by collecting data on 2 (two) main variables of room thermal comfort, namely air temperature and relative humidity. The recording time starts from 08.00 to 16.00 WITA. Observation made to collect room geometry data, building orientation, roof slope, and material used. Measuring instruments are placed in the living room throughout the room. The analysis carried out on the measurement data is then correlated with the observation. The results show that the average outside temperature above the thermal comfort standard is around 32.0 to 37.4℃ from morning to afternoon, the maximum temperature reaching 41.7℃ occurs around 13.00 to 14.00 WITA and the minimum temperature is 28.2℃ only occurs in the morning. Air humidity average is relatively fair in the thermal comfort zone between 42.8 to 69.8%. Material gives the most dominant influence on heat induction from the outside environment to the interior space. The orientation of the house found in North-South is hotter, the roof with a double slope is hotter, and the lower the ceiling is more hot.
Co-Authors Andi Yunita Baharuddin Hamzah Gyuyong Yoon Jumriya Jumriya Masaya Okumiya Miftahul Jannah b Nasrul Kulle Nur Mutmainnah Ramli Rahim Sahabuddin Latif Triyatni Martosenjoyo Yetti Yunianti Ishak