STUDY OF ALTERNATIVE MATERIALS EMPLOYED IN THE MANUFACTURE OF BLACK GLOBE THERMOMETER USED FOR CALCULATE BGHI AND RLT

Abstract

Due to the high cost of copper and the globe with a view to use in large-scale experiments in the area of rural buildings to measure the comfort level of a given environment, this research aims to make a comparative analysis between the values temperature found based on the globe black copper, and the values found with the use of alternative materials globe. The choice of material was based on size, durability, availability, and ease of handling. All treatments were exposed to the external environment in flat area without vegetation cover, randomly distributed. The data were collected at 9 h, 11 h, 13 h, 15 h, and 17 h for 15 days. The experimental design was completely randomized design with 08 treatments and 01 control treatment (copper globe) with 5 repetitions. In conditions in which the work was conducted, it can be concluded that all alternative materials could be used in place of copper globe, however it is recommended to make a correction before using the data, black globe temperature in calculating the alternative BGHI and RTL according to the material used. The globes made of pet bottle and fixture were those with temperatures closer to the globe of copper.