Abstract
Abstract This article provides an evaluation of the acoustical and thermal performance of some closing systems by referencing materials such as cement plates, plasterboard walls, precast concrete panels and expanded polystyrene. Reverberation time is calculated by applying an empirical formula, which uses temperature and relative air humidity values obtained from simulations that were conducted using the computational simulation program ESP-r (Energy Simulation Program-research). The internal temperature presented by the ESP-r is an indicator of thermal performance. Using a simplified graphic method, the acoustical performance is also evaluated by estimating the loss of sound transmission that occurs through the closing panels. Combinations of these panels, which form multilayer panels mediated by a layer of air and with or without insulating material between them, are applied. The results show that multilayered closing systems, when filled with insulating material, are an efficient solution than can provide adequate acoustical and thermal performance.
Highlights
Steel structure construction has proven to be a comprehensive aspect in the development of civil construction, in projects that can provide adequate global efficiency
An estimation was conducted to determine the sound transmission loss (TL), which occurs through the closings, and reverberation time (RT) and temperature (Ti), which occur in the environment
An estimation of the TL is made for multilayer closing systems, which consist of combinations of cement plates (PLC), plasterboard walls (GEA), precast concrete panels (PMC) and expanded polystyrene (EPS), with or without sound absorber material in the panel air cavity
Summary
Steel structure construction has proven to be a comprehensive aspect in the development of civil construction, in projects that can provide adequate global efficiency. Sound transmission loss through a wall, and reverberation time within an environment because of existing people, air and surfaces may be acoustical performance indicators of locks These closing systems have low thermal inertia, which may compromise their thermal performance and require an integrated study of their thermal and acoustical performance (BIES; HANSEN, 2003; RIBAS; SOUZA, 2011). The purpose of this paper is to conduct a thermal and acoustical evaluation of the performance of some multilayer closing systems that are used in the construction of steel structures in Brazil. Examples of these systems include cement plates, plasterboard walls, precast concrete panels and expanded polystyrene. An estimation was conducted to determine the sound transmission loss (TL), which occurs through the closings, and reverberation time (RT) and temperature (Ti), which occur in the environment
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