Climatização com uso de equipamentos do tipo mini-split e VRF,VRV e as normas brasileiras de qualidade do ar

Abstract

The air conditioning of commercial buildings with the use of split system type equipment and VRV / VRF advances every day on the central systems with ducts. The ease of acquisition, relative simplicity in installing such equipment, and the increasingly attractive price, have caused commercial building owners preferred this solution. Both in new projects or reforms. They also contribute to the use of this solution to decrease the vertical space, eliminating engine room to house central air, thereby freeing up more area of the building to gain more in number of floors. By the user, simplicity in individual temperature control in a given zone of occupation and the possibility of partial operation of the system makes these also increasingly prefer this type of system. In addition, the large number of manufacturers and/or importers, mainly between the four of major manufacturers of plant equipment, bred a "lobby" active to make use of such equipments. Mainly working end customers such as architects and developers. In order to assess air quality under the parameters established by the current Brazilian rules related to the theme in commercial buildings for public use and climate-controlled with the use of mini-split type equipment. Data collected were analyzed carried out between the years 2011 and 2012 in a utility company retail environments. Sampling was done by a specialized company with calibrated and certified equipment. The results showed significant problems related to indoor air quality. In particular the concentration of CO2 level of respondents environments. Given this fact he realized the need for interventions in these facilities so that air quality standards are established.