39 research outputs found
SITE BARRIER OPTIMIZATION ON INTEGRATING THERMAL COMFORT WITH NOISE PROPAGATION CONTROL
No full textThe difference in geographical altitudes in tropical environment not only causes variations in climate and environment leading to influences on thermal comfort, but also effects on noise propagation variation. This study proposes the site barrier optimization and integrated control on thermal performance and environmental noise to reach the standards using ANSYS Fluent and MATLAB simulations method. The research locations are in Surabaya as the lowland area and Malang as highland area, all are representatives of tropical urban environment of Indonesia. The results highlighted that the minimum barrier distance to receiver for the lowest barrier height (1.5 m) for both thermal and noise improvement is 5.63 m. Meanwhile, at minimum distance for noise control (1.8 m), the minimum reference height of aperture is 1.02 m when it uses lowest barrier height
Analysis of resilient design by thermoacoustic adaptation of tropical urban model
No full textClimate and urban environment changes lead to tropical building adaptation and resilient strategy. They focus especially on thermal comfort and noise propagation variation as the result of global warming and urban growth. This study analyzes a conceptual design of tropical urban model on integrated design of thermal and acoustic (thermoacoustic) issues. By experimental measurement and simulation method using Computational Fluid Dynamics, the findings are directed to meet the standards and to recommend the new guidelines for sustainable urban building. The research location is in Surabaya as the urban tropical lowland area and Eco-House of ITS, a tropical building model in an urban environment, was built as experiment model. The results highlighted that the noise barrier should consider 5.24% of the maximum window to wall ratio (WWR) in tree dimensionally analysis, horizontally and vertically. Providing vertical ventilation is the best solution for urban density, but the orientation and its flanking noise affect the passive cooling. In general, there are some factors having a high contribution in addition to WWR, such as wind acceleration, the distance, and building material
SITE BARRIER OPTIMIZATION ON INTEGRATING THERMAL COMFORT WITH NOISE PROPAGATION CONTROL
No full textThe difference in geographical altitudes in tropical environment not only causes variations in climate and environment leading to influences on thermal comfort, but also effects on noise propagation variation. This study proposes the site barrier optimization and integrated control on thermal performance and environmental noise to reach the standards using ANSYS Fluent and MATLAB simulations method. The research locations are in Surabaya as the lowland area and Malang as highland area, all are representatives of tropical urban environment of Indonesia. The results highlighted that the minimum barrier distance to receiver for the lowest barrier height (1.5 m) for both thermal and noise improvement is 5.63 m. Meanwhile, at minimum distance for noise control (1.8 m), the minimum reference height of aperture is 1.02 m when it uses lowest barrier height
Optimization of Architectural Electroacoustics Design for the Interior Mezzanines of Vertical Buildings
No full textA science that deals with the transformation of electrical energy into acoustic energy or vice versa, electroacoustic, generates the increased intensity and loudness of sound by mechanical and/or electrical means. Because of the same context, it should be designed simultaneously with the consideration of room acoustics. A vertical building is usually designed separately with architectural aspect and other technical consideration. Interior mezzanine has unique characteristic on propagating sound because its balconies could be an element of room acoustic reflector and absorber, a shelter from noise and a barrier of sound propagation. For optimum music and speech activities, hybrid design strategy of active strategy using electroacoustic combined with the passive method is conducted. This research optimizes room acoustics criteria of variated building models as integrated building system with the loudspeaker. Ecotect Analysis and additional audio programming determine all process by simulating all potential variables. The result shows that 5 m will be the recommended minimum distance of column-loudspeaker placement for mezzanine floor. With the same loudspeaker specification power and frequency, the vertical structure as the armature of electroacoustic orientation and interior material are the most critical variables in determining of reverberation time optimization
Optimization of Architectural Electroacoustics Design for the Interior Mezzanines of Vertical Buildings
No full text
An integrated control on thermal and noise environment of tropical building material
No full textThe environmental problems of thermal and noise environment are recently considered the most important contributors to the tropical building in an urban area. The porous tropical materials provide both a solution for cooling and airborne noise problem from the source to receiver when the wind is in the same direction. This research optimizes the integrated control of thermal and noise environment which are directed into building material evaluation. Surabaya is selected as representative of the hotter area of the lowland while Malang is determined as the colder urban area of the highland. An eco-tropical lightweight material, wood, is examined as a case study. The field measurement for surface material temperature and its transmission loss were conducted in order to give information on thermal and acoustical properties of the material. The optimization is conducted by comparing Sound Reduction Index and by Conduction Heat Flow. The results highlighted that for the same material, the thickness that effect on its mass is important for both thermal and noise control. The higher the thickness is, the higher the Sound Reduction Index and the lower the conduction heat flow are. Modifying material by adding the thickness of wood results that by material mass minimum 36.5 kg/m2, the critical lowland building meets the standard of World Health Organization noise limits and has lower heat gain
Standard review and update for tropical comfort shift of the built environment
No full textThe urban building standards recommend adaptable shift on heat and noise criteria as the main issues related to the high-density environment. The previous studies relating to building thermal comfort provided the comparison results between the past and recent conditions. This study reviews the guidelines and regulations of international standard, overseas countries, and specific region of tropical climate research in Indonesia. The evaluation is focused on tropical climate in order to reach the accurate thermal comfort and noise criteria comparison for Indonesia. Furthermore, the field study of the 71 of the tropical built environment respondents was also conducted in order to update and compare to the existing standards. The review results show that compared to 17°C to 31°C thermal comfort range from the World Health Organization, the tropical thermal comfort should be determined with a range of 29.3°C to 31°C. Based on the field studies, for lowland is formulated by 1.4x+29.3 and in highland is 1.5x+29.3 as two representative regions of the tropical environment. For noise criteria, some countries set the policy for determining noise limits which has the same value between day and night condition as the result of the constant number of noise source with the similar level of annoyance. Based on the field study, this study updates the noise criteria which the denser environment, lowland, has limits of noise in 49.9 dBA when in highland is 47.8 dBA. Both of them are lower than 55 dBA of Indonesian Standard. Noise perception by occupants in nighttime shows that both in the lowland and in the highland, the vote is lower than daytime. The noise limits are 45.9 dBA and 40.0 dBA for lowland and highland, respectively. In general, the updated standard completes the existing and the detail of Indonesia national standard and the will be useful to guide the tropical building design
