Fish Tilapia,Tilapia Frozen Fish,Fresh Tilapia Fillet Ivp,Frozen Tilapia Exporter Zhoushan City Shuangying Aquatic Products Co., Ltd.  , https://www.shuangying-aquatic.com
The temperature range of the rapid temperature change test chamber of various specifications and speeds is generally the same, that is, -60～+130°C, but the temperature change range of the evaluation cooling speed is not the same. According to the different test requirements of the test, the rapid temperature change The test chamber has a temperature range of -55 to +80 ° C, and some are -40 to +80 ° C.
There are two ways to change the temperature change rate of the rapid temperature change test chamber. One is the average temperature rise and fall speed, and the other is the linear temperature rise and fall speed (actually the average speed every 5 minutes). The average speed of the whole process refers to the ratio of the difference between the high temperature of zui and the low temperature of zui in the temperature range of the test chamber. At present, the technical parameters of the variable temperature rate provided by the foreign environmental test equipment manufacturers refer to the whole average rate. The linear temperature rise and fall speed refers to the variable temperature rate that can be guaranteed in any 5 min period. In fact, for the rapid temperature change test chamber, the difficulty of ensuring the linear temperature rise and fall speed is the key to the cooling rate of the test chamber in a 5 minute period after the cooling stage Zui. From a certain perspective, the linear temperature rise and fall (average speed every 5 minutes) is more scientific. Therefore, the test equipment has the two parameters of the average average temperature rise and fall speed and the linear temperature rise and fall speed (average speed per 5 minutes). In general, the linear temperature rise and fall (average speed per 5 minutes) is 1/2 of the average temperature rise and fall of the whole process.
Analysis on the Selection of Temperature Change Rate of Temperature and Humidity Test Chamber
Selection of variable temperature rate The ordinary high and low temperature test chamber has no index of cooling rate. The time from ambient temperature drop to nominal zui low temperature is generally 90-120 min. The high and low temperature alternating test chamber and the high and low temperature alternating wet heat test chamber all have the requirements of variable temperature speed, and the temperature change rate generally requires 1 ° C / min, and the speed is adjustable within the range of this rate. The rapid temperature change test chamber has a faster temperature change rate, and the temperature rise and temperature drop rate can reach 3 ° C / min ~ 15 ° C / min, in some temperature ranges, the temperature rise and temperature drop rate can even reach 30 ° C / min or more.