The Study and Development of Methods and A Chemical Reaction-Based Drinking Water Cooling Device for Military Field Training

Abstract

This research is an experimental study. The objective of this study was to determine the amount of chemicals that reduced the temperature of bottled drinking water 330 mL to 15°C in a shorter period of time than using ice, and to design and develop a chemical reaction-based drinking water cooling device for military field training. From the study, it was found that the average time taken by ice to reduce the temperature of drinking water to 15°C was 37.00±1.00 minutes. According to the study of the amount of chemicals to reduce the temperature of drinking water to 15°C, it was found that chemical reaction between 157.74 grams of barium hydroxide octahydrate and 76.12 grams of ammonium thiocyanate could reduce the temperature of drinking water to 15 °C in 30.33±0.58 minutes. For the design and development of a chemical reaction-based drinking water cooling device, the investigation into methods for releasing ammonia gas from the aluminum ziplock bag indicated that Method 3 was the most suitable approach. Similarly, in exploring ways to enhance the sealing efficiency of the aluminum ziplock bag, Method 3 also proved to be the most effective. When testing the efficiency of the drinking water cooling device that was developed, it was found that the device could reduce the temperature to 15°C with an average time of 14.00±1.00 minutes. This was less than the average time taken by using ice and chemical reaction.