The use of CFD for residential, office, industrial, hospital and shopping center buildings is being increasingly demanded due to customer demands for thermal comfort and safety. CFD can be used to predict internal temperatures and velocities in buildings provided by increasingly modern air conditioning systems. It is also important to understand the flow of air and smoke during fires. Fire and smoke detection can also be analyzed by CFD simulations, which leads to safe and optimized design of the number and location of detectors. Logically, CFD is essential to understand the project and the direction of smoke due to the pressure difference between the different environments in the building, such as rooms, corridors and stairs.
Providing adequate ventilation and temperature with minimal energy consumption is always in the industry's focus to ensure the proper functioning of equipment and a suitable environment for employees to carry out their work.
The thermal modeling carried out by ATS allowed Vale to identify the thermal behavior inside four buildings with different characteristics throughout the stages of the mining process. The study was necessary due to the need to install acoustic panels to attenuate the noise that was being perceived in the residential neighborhoods that were created in the surroundings of the mining company. The ATS team carried out the thermal survey of the equipment inside each building during the operation and prepared the 3D CAD drawings specifying the thermal properties of the materials. With the results of the computational analysis, it was possible to compare different scenarios of openings and ventilation with the original condition of the building. The results for each workstation in the building were compared and classified according to the limits of work subject to exposure to heat in Annex 3 of NR-15 of the Ministry of Labor. With the study, it was possible to identify the best ways to position the openings and the ventilation system. This activity consolidated the project decisions and brought savings as the power ventilation system was installed only in specific regions instead of being spread throughout the building as initially planned.
For Hoss, an industrial contractor, ATS implemented a temperature study in a shed or hangar for the air conditioning and ventilation project for Embraer. There were strict temperature gradient requirements from 0 to 3 meters high that the air conditioning system had to meet in order not to affect the operation of some machines. Hoss was participating in a selection process and had to prove by simulation that its air conditioning met the necessary requirements. CFD++ software was used and the simulation was very accurate and easy to implement, being done quickly and delivered to the client. In this case there was no concern for thermal comfort for people.
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