Investigation of the length and the number of gutter optimals for chilled water circulation in hydroponics planting

Abstract

The weather in Thailand and other countries in a tropical environment have influenced the growth of hydroponics planting. This research was used a vapor compression system to cool nutrient solutions at 25°C for the hydroponic plantings. The objective of this research is to study the length and the numbers of gutter planters optimals for chilled water circulation. The length and the number of gutter planters were varying in 20 m (single line), 16 m (double lines), 12 m (3 lines), 8 m (4 lines) and 6 m (6 lines) and the nutrient solutions flow rate were vary from 100 LPH to 200 LPH. The results found that a solution temperature increase when the length of gutter is increased at the same flow rate. The numbers of gutters dose not influence the solution temperature. The length and the numbers of gutter planters optimals for chilled water circulation for this research are 6 m and 6 lines. Due to the solution temperature in this length and numbers of gutter planters is constant and the amount of product is 180 particles of plants.