Ultra-low temperature refrigerator price Ultra-low temperature refrigerator working principle

Ultra-low temperature refrigerator is also called ultra-low temperature preservation box, ultra-low temperature freezer, ultra-low temperature preservation box, etc. According to the temperature range, it can be roughly divided into: -60 degrees and -86 degrees ultra-low temperature refrigerators. It can be used for the preservation of tuna, low-temperature testing of electronic devices, special materials, and the preservation of plasma, biological materials, vaccines, reagents, biological products, and chemicals. Low-temperature preservation of reagents, bacterial strains, biological samples, etc. So, how much does an ultra-low temperature refrigerator cost? How does an ultra-low temperature refrigerator work?

1. Ultra-low temperature refrigerator price

Haier ultra-low temperature refrigerator price

Product: Haier ultra-low temperature refrigerator DW-86L288

Haier ultra-low temperature refrigerator specific performance:

1. Temperature control: computer control, the temperature is -40~-86℃; adjust 1℃

2.? Security system: fault alarm (high and low temperature, sensor, voltage, heat dissipation difference, ambient temperature exceeding standard); multiple protection functions (password, power-on delay, ultra-low/high voltage compensation)

3.? Refrigeration system: Optimized cascade refrigeration technology, oral compressor, stronger cooling capacity; ultra-thick and high-density insulation layer, better thermal insulation effect

4.? Unique mobile phone SMS alarm : Optional mobile phone remote monitoring function, users can send text messages to the device to check real-time temperature and alarm conditions.

Sanyo ultra-low temperature refrigerator price

Sanyo ultra-low temperature refrigerator has many product series: -150℃ medical low temperature box (V.I.P.PLUS series), -86℃ medical low temperature box (V.I.P. series), - 86℃ ultra-low temperature storage box, -35℃/-40℃ medical low temperature box, blood storage box, etc.

Specific performance of Sanyo ultra-low temperature refrigerator:

1. Innovative control panel: LCD graphics The display panel has a pop-up menu function, which is simple and intuitive to operate, and can display detailed information on the status of the medical cryogenic box. Comprehensive sample protection measures.

2. Advanced design, structure and control can make valuable samples safer: new insulation materials, new status warning functions, and standard LN2 backup device system, which can be used in any emergency situation.

3. Data recording function: The temperature inside the box can be recorded monthly or weekly, and the opening/closing status (more than 2 minutes) can also be recorded.

Because ultra-low temperature refrigerators have high technical requirements and are high-tech products, their prices range from seven to eight thousand yuan, and generally cost tens of thousands of yuan per unit. They are generally used by enterprises, governments, schools, and Scientific research institutions purchase more.

2. Working principle of ultra-low temperature refrigerator

Ultra-low temperature refrigerator generally uses two-stage refrigeration.

The first-stage refrigerant is R-12 (23.Ooz, 28.349?523g), the design pressure is 400ppsi for high pressure (1ppsi=6.894?76X10'Pa) and 90ppsi for low pressure.

The condenser of the second stage refrigeration and the evaporator of the first stage refrigeration are placed together; the refrigerants of the second stage are R-503 (8.50z) and R-290 (0.70z) The mixture is designed with both high and low pressures of 300ppsi. The temperature probe is a thermistor, which displays different temperatures on the panel according to the resistance value (ie, the temperature).

The refrigeration process of the ultra-low temperature refrigerator

When the power is turned on, when the temperature displayed on the panel is higher than the set temperature, the first-stage compressor starts first and the first-stage refrigeration system starts work, causing the temperature of the condenser of the second-stage refrigeration system to drop, that is, the temperature of the second-stage refrigerant drops. After a delay of several minutes, the second-stage refrigeration system also starts to work. Its evaporator is on the inner wall of the refrigerator. It can make the internal temperature of the refrigerator drop a lot. All the heat released by its condenser is absorbed by the evaporator of the first-stage refrigeration system, and the heat released by the first-stage condenser is dispersed into the air.

When the internal temperature of the refrigerator reaches the set temperature, the temperature sensor resistor transmits the information, the control relay loses power and is disconnected, and the two-stage refrigeration system stops working.

When the temperature in the ultra-low temperature refrigerator rises again and exceeds the set temperature, the ultra-low temperature refrigerator repeats the above operation process again, so that the temperature in the refrigerator is always maintained around the set temperature.

The above is the price of ultra-low temperature refrigerator and the working principle of ultra-low temperature refrigerator introduced by the editor. I hope it can help you. For more information about ultra-low temperature refrigerators, please continue to pay attention to Tubatu Learning Decoration.