The drug test chamber generally adopts fully intelligent control of temperature and ambient humidity, and the operation is stable, accurate and reliable; the unique air duct circulation ensures that the internal structure of the individual studio is evenly distributed; the independent overheating and ultra-low temperature light control tracking alarm equipment ensures There are no accidents in the safe operation of the test; the heating, cooling, and humidification systems can be completely independent to improve work efficiency.

　　Part 2 of the former State Food and Drug Administration Notice (No. 3, 2015) "Technical Guidelines for Stability Research of Chemical Drugs (APIs and Preparations)" sets out requirements for temperature, humidity, and test duration. The key test standards are shown in Table 1. displayed.

　　It can be known from Table 1 that the stability test includes several temperature values ​​and ambient humidity values, covering several temperature values ​​between 25°C and 60°C, and air humidity covering several values ​​between 60% and 95%. However, the temperature of 25°C and 40°C and the air humidity of 60% and 75% in the box body are the common working properties of the drug stability test box. Therefore, the above test standards are used as the working condition standard for the energy efficiency test of the drug stability test box. , has certain rationalization and practical significance.

　　Because the natural temperature conditions of the drug stability test are close to the long-term room temperature in the laboratory, the thermal insulation characteristics of the box and the cooling efficiency of the refrigeration unit are not the main factors, and the manufacturer can solve it without spending a lot of money. If the cooling capacity can be adjusted quickly and meticulously, the humidification capacity can be finely managed and adjusted (too much humidification requires dehumidification, which increases additional energy consumption, and water droplets gasify and endothermic reaction, resulting in temperature reduction, which is equivalent to giving additional refrigerating capacity), the thermodynamic cycle can be achieved without or basically without heating. Therefore, the adjustment and control of cooling capacity and the adjustment and manipulation of humidification capacity are important factors that determine the energy consumption of the test chamber.

　　In order to evaluate the energy efficiency of drug stability test chambers accurately, comprehensively and reasonably, it is necessary to use different models of products to test the power consumption and energy efficiency in different operating states. Therefore, the housings with the most common rated capacity and the most widely used 800L and 250L were selected for relevant testing.

　　During the normal operation of the drug test box, the temperature and air humidity inside the box body are in the middle of the temperature and air humidity of the use scene of the shell . The natural environment temperature is low, the temperature inside the box body is raised (heating), and the energy consumed during the cooling (cooling) period is relatively different from the energy consumed during the heating (warming) period.

　　The certification test is carried out in a temperature and ambient humidity controllable test box, and the temperature and air humidity are tested at the peripheral interface of the shell; the temperature and ambient humidity in the box body are set according to the product control panel, and the drug temperature test box runs continuously for more than 4 hours ( achieve equilibrium state), take the last 1 hour test data.