Abstract
Ice slurry（slurry） has been attracting attention as an effective countermeasure against heat. However, the preparation, cooling, and transportation of slurry to the sports field have not been practically investigated. We have examined the method of making slurry without using special equipment and the method of keeping it cool and transporting it to the sports field. The slurry could be made with a commercial mixer under the following three conditions:（1） with a large ratio of ice to liquid,（2） with an equal ratio of ice to liquid, and（3） with a small ratio of ice to liquid. The slurry production time was about 3 minutes for the high ice content condition, about 1 minute and 30 seconds for the equal ice/liquid condition, and about 1 minute for the high liquid content condition. In terms of the cooling method, the slurry state was maintained for only up to 2 hours in the cold bottle, while it was maintained for up to 3 hours in the vacuum-insulated bottle under the condition of a large percentage of ice. In addition to the vacuum-insulated bottle, the slurry could be maintained for up to 4 hours in the case where the ratio of ice to liquid was equal, and up to 5 hours in the case where the ratio of ice to liquid was high, by using the vacuum-insulated bottle in combination with a cold bag.
