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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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Journal : EPI International Journal of Engineering

 1 
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

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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.
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