Test of refrigerating capacity of commercial refrigerator and calculation of power consumption

- Jan 07, 2018-

Refrigeration capacity is an important indicator to measure the performance of commercial freezer, usually by the commercial freezer ice speed to determine refrigerating capacity, or use a professional temperature instruments to check commercial air-conditioner temperature changes. The European snow cooler will lead you to the test site. The intelligent temperature recorder will monitor the temperature changes in the cold room and the freezer in real time to understand the refrigeration effect of the commercial refrigerator.

A, refrigeration test: 58 minutes 20 ℃ to 5 ℃ cooling fast

Test method of refrigerating capacity:

Disconnect the commercial refrigerator power supply and open all doors and drawers of the commercial refrigerator for about half an hour; (raise the internal temperature of commercial refrigerator)

The two temperature probes of the intelligent temperature recorder are put into the cold room and the center of the freezer. (do not contact the commercial refrigerator directly to ensure the temperature probe is suspended.)

The temperature recorder is set to record the change of temperature per minute;

(4) cold room temperature of 5 ℃, 15 ℃ freezer reach - end of the test;

(5) calculate the freezer 20 ℃ to 5 ℃, the freezer from 20 ℃ to 15 ℃ the time spent.

Note: in order to avoid the interference of the material temperature to the test results, the refrigeration test is carried out in the case of nothing in the commercial refrigerator.

Intelligent temperature recorder measurement range from 55 ℃ to 125 ℃, the precision of + / - 0.3 ℃, 0.01 ℃ resolution, the temperature changes are recorded with a temperature probe sensor, the temperature change curve is deduced. Commercial freezers set ways we adjust freezer to a minimum of 2 ℃, the freezer is set to - 30 ℃, at the same time open "intelligent speed cold" and "smart quick-frozen" function.

Refrigeration test conclusion: freezer from 20 ℃ to 5 ℃ of 58 minutes, freezer refrigeration efficiency about 0.26 degrees per minute; The freezer fell from 21 ℃ to 15 ℃ spent 2 hours and 38 minutes, freezer refrigeration efficiency of about 0.23 degrees per minute.

Ii. Test of power consumption of commercial refrigerator

To test the power consumption of commercial refrigerator for 72 hours, the commercial refrigerator will be filled with different ingredients. Intelligent testing process lieutenant general commercial freezer to adjust working mode (5 ℃ freezer, greenhouse 0 ℃, the freezer - 18 ℃), and simulated the user everyday use periodic commercial freezer door will open for 10 seconds or so close again, unlock the function of quick frozen for half a day, etc.

The electricity consumption on the commercial refrigerator plate is rated power consumption. The rated power consumption is when the environment temperature 25 ℃, the stable operation of the commercial freezer (the highest temperature fridge average temperature of 5 ℃ freezer - 18 ℃), the consumption of electricity running 24 hours a day. Our evaluation of this product is based on the data measured during the daily use of the product, so the results of the test results are slightly higher than the rated power consumption.

Power consumption test results: after calculation, the actual power consumption of about 1.43 degrees, slightly higher than the rated power consumption 1.24 degrees, for a total volume of 510 l open the door of the commercial freezers, energy saving effect is not bad.