Optimization of Geometry of Architectures to Achieve the Thermal Function with ThermoAcoustic Effect

Subject Areas : architecture

Zahra Sokhandan Sorkhabi ¹ (Ph.D. Candidate, Architecture Department, Art University of Isfahan, Isfahan, Iran.)
Farshad Nasrollahi ² (Assistant Professor, Architecture Department, Art University of Isfahan, Isfahan. Iran.)
Abbas Ghaffari ³ (Assistant Professor, Architecture Department, Islamic Art university of Tabriz , Tabriz. Iran.)

Received: 2017-12-23 Accepted : 2017-12-23 Published : 2017-11-22

Keywords: Consecutive Cornering, Sound Energy, Sound Absorber, Thermal Energy, SPL,

Abstract :

In this paper, geometries of architecture have been identified which convert maximum sound and oscillation energies to thermal energy without any kind of absorbers to minimize mount of noise in spaces through the geometry of space with absorbing the maximum sound energies. Research has been done with COMSOL5.2 software and simulation method. The argument of this research has been done through the logical reasoning and with test developing in selective software and has been documented and resulted. In process of research, sound with 8000 HZ frequency that simulated a human speech, has been played in spaces with diverse form (changes in form of walls, ceilings) and same materials and has been calculated the mount of intensity, pressure and sound pressure level. Then mount of sound absorbing and converting to thermal energy has been simulated in spaces with applying the absorbing rate of air and results has been documented from temperature change dependence to geometry of spaces. It is so important that the walls, ceilings and floors were adiabatic and insulate completely from inside. In Simulation processes, air has been used as a material that is filled inside of simulated forms and there has been not any kind of other materials. By obtaining numerical results, the most suitable geometries are identified for producing heat through the sound oscillations and minimizing the noise. As a result, it was found that geometry of building make potential for Acoustic and thermal comfort from sound energy without any kind of absorbing materials inside of rooms. Heating changes simulated in two kind of geometries: pure volume and composite volume. Composite volumes have been choosing through the result of pure volume. Between pure volumes, Cylinder produced maximum temperature through the sound energies. Considering cylinder as a regular polygon with infinity corners and sides and making corners in composite volumes, heating changes oscillated due to corners between sides. Corners with angel about to 90 degree produce more heat compared with other corners. A plurality of corners with 90 degree and equal sides adjacent to angle in geometry of architectural spaces change the mount of temperature in increasing ways. Corners with obtuse angles cause higher temperature and corners with acute angles produce lower temperature. The highest temperature happens in geometries with 90 degree angles. Number of corners with obtuse and acute angles did not follow the definitive rules to produce heating or cooling in this study. The Best position for making consecutive corners in plans with right corners is the upper third of the height of Architectural spaces that produce high temperature. In compact geometries, the heat generated due to sound energies and oscillations are more than geometries with stretching in one direction. A Cube produces more heat than rectangle with same amount of height and volume. Composite of Cylinder and cube volumes in walls by maintaining the corners with 90 degree angles, lead to increasing the temperature. Filleted angles in walls of cubes and rectangles, with radius of ¼ of side of cube and more, make temperature increasing.

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