Analysing the influence of climatic variables on air conditioning condensate water production

Abstract Air conditioning condensate recovery systems have potential applicability in buildings that make intensive use of air conditioning. However, little is known about the volume of condensate water generated by air conditioning systems for use in non-potable applications. This study aims to elucidate the influence of climatic variables on condensate water production. Data collection regarding the condensate water production of air conditioning system was carried out in a 15 m 2 , totalling 968 h of operation during the rainy season in Brasilia, Brazil. Overall, relative air humidity and dew point showed positive correlations with the volume of condensate water, indicating that more humid conditions favour condensation. Conversely, higher temperatures, both external and internal, correlated negatively with the volume of condensate water. In this way, a generalized linear model was proposed, adjusted using the explanatory variables of external temperature and relative air humidity to predict the volume of condensate water produced. The model was not able to capture the variability of the response variable well. However, this study represents an advance regarding the development of a model capable of estimating the supply of air conditioning condensate water.