Development of a solar-powered aquaponics with ground heat exchanger (GHE) System for Red tilapia (Oreochromis niloticus) and Bok Choy (Brassica rapa sabsp. chinensis)
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Date
2023
Authors
Donnie M. Barayuga, Jay-Ar D. Gante, and Mae Anne V. Justimbaste
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Abstract
Growth in population and urbanization have raise the demand for reliable access to fresh produce. Aquaponics could be a solution to this problem. For the cultivation of high value crops that thrive only in colder regions, making their production is lowland areas challenging, it is necessary to devise alternative cooling systems for the production of high-quality crops. This study aimed to develop a solar-powered aquaponics with a ground heat exchanger (CHE) system under greenhouse conditions and evaluate its performance in terms of the growth and yield of Red Tilapia and Bok Choy. There were two treatments in the experiment that cooling method (an aquaponics system with GHE) and the (Control (an aquaponics system without GHE). Under GHE, the average temperature was maintained at 28.96° C, which was 1° C lower than without (GHE). The aquaponics system in the greenhouse was solar-powered using a DC system. The system was designed to run on a 200-watt solar panel. the designed DC solar system operated effectively and was able to support the DC loads during the course of the study. Analysis of the data using T-test showed a significant difference between the two treatments in terms of water temperature, dissolved oxygen, growth of Red tilapia and growth of Bok Choy. Test result found no significant differences between the treatments in water pH, ppm, leaf width and crop height.