COMPARATIVE ANALYSIS OF ECONOMIC FEASIBILITY BETWEEN CONVENTIONAL AND INVERTER AIR CENTRALS

Abstract

The challenge in reducing energy consumption is complex, especially when unfavorable conditions for hydroelectric generation lead thermoelectric plants to operate, increasing production costs and readjustments in energy tariffs. In Pará, the predominant climate is tropical equatorial with average temperatures of 27 to 35 ºC. Therefore, to guarantee thermal comfort in a dental clinic, it is necessary to use a refrigeration system. This article aims to comparatively evaluate the economic viability of using air plants with conventional and inverter technology. The methodology applied was the use of economic engineering techniques IRR, Payback and NPV, the costs of acquisition, maintenance and monthly energy costs were considered, the minimum attractiveness rate used in the study was 20.5% per year. The study concluded that the use of inverter air plants is viable when compared to conventional air plants, the result is justified by the calculated IRR of 96.04% and the NPV of R$69,162.04 for a 5-year cycle.