Abstract
Muscovite is known by its thermal and electrical insulating properties. Based on this, it was hypothesized that its addition on paints should increase the thermal resistance. The use of muscovite as mineral insulating is pointed out as advantageous due to its low cost compared to other materials used for this purpose, such as the ceramic microsphere. The use of a low cost material could open the access to the medium and low income families, implying two aspects: the life quality increase by thermal comfort and the increase of energy saving. Thus, this part of the population could open a new market to thermal paints. Aiming to contribute to this issue, this work evaluated the thermal insulation performance of commercial paints containing muscovite additions and determined the economic evaluation for its industrial production. The thermal paint was formulated by adding 10%, 20% and 40% of muscovite to the commercial paint. This was applied on steel reinforced mortar boards. Thermal insulation tests were carried out in bench scale using an adapted box. The economic evaluation of the industrial production of muscovite-based thermal paint was conducted, considering the Brazilian economic market in this activity. The results showed its ability as an insulating agent due to a reduction of 0.667 °C/mm board by the addition of 40% muscovite. The economic analysis also demonstrated the feasibility of the thermal paint industrial production. The payback is favorable to 5 years when compared to the Selic short-term lending rate, with 21.53% of internal rate return and a net present value of US$ 15,085.76.
Highlights
IntroductionHumans need to stay in a certain area of thermal comfort to perform their routine activities better (COSTELLO et al 2009) (RUPP et al 2015)
Climate changes are responsible for the average temperature increase on Earth
Humans need to stay in a certain area of thermal comfort to perform their routine activities better (COSTELLO et al 2009) (RUPP et al 2015)
Summary
Humans need to stay in a certain area of thermal comfort to perform their routine activities better (COSTELLO et al 2009) (RUPP et al 2015). For this purpose, fan and air conditioning (AC) systems are used. Countries in development, such as Brazil, are facing water and energy crisis, requiring the use of thermal power plants to meet the demand. In this context, the development of new technologies that make buildings more energy efficient and offer an adequate thermal comfort is essential (WIJEWARDANE; GOSWAMI, 2012) (AZEMATI et al 2013)
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