A comparison of the temperature distribution of the Hydroponic nutrient with different length using computational fluid dynamics

Abstract

This paper aimed to compare temperature distribution of hydroponic nutrient solution of various gutter lengths using Computational Fluid Dynamic prediction. In this study, a pipe cross section and drill holes positions were consistent and flow rate of solution was 100 L/hr. The result shown that, in the depth between 5 mm to 25 mm, the temperature at the deeper solution was higher than the surface. It also shown that the different lengths of gutter in this study slightly affected the solution temperature distribution. The different lengths of gutter in this study were 6 m, 8 m, 12 m, 16 m and 20 m and the temperature increased after the length was greater than 4 m. The nutrient solution temperature was between 25.00 and 25.76 °C which was low temperature and suitable for plants.