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영어

In this study, the distribution of internal temperature and flow by forced blowing of the refrigeration unit installed in a truck were investigated. The temperature stability inside the box was measured from the experiment using the standard calorimeter and the constant temperature and humidity chamber. Using the computerized analysis method, the uniformity of temperature and flow inside the box was verified in the longitudinal direction(central section) and unidirectional direction(lateral sections of ⅓ and ⅔ points) of the box. The set temperature inside the box was -20℃, and the air flow rate of the refrigeration unit were 70, 80 and 90㎥/min. In the temperature stability experiment, the temperature deviation inside the box was within ±1℃ of the set value. The faster the air flow rate of the refrigeration unit, the lower the temperature and flow uniformity. The temperature and flow uniformity inside the box were most effective at 70㎥/min. Because the temperature and flow deviation were the smallest in the longitudinal direction and the upper and lower section.