How much do you know about these points of medium selection for low temperature coolant circulating pump?

How much do you know about these points of medium selection for low temperature coolant circulating pump? The low-temperature coolant circulating pump can be matched with a variety of instruments (rotary evaporator, fermentation tank, chemical reactor, freeze drying equipment, biopharmaceutical reactor, etc.
); large cooling capacity and fast cooling speed greatly improve work efficiency; The flow rate of the circulating pump of this machine can be adjusted and customized to meet the actual needs of different users; all models of this machine can be reasonably matched between low temperature and refrigeration capacity, low temperature and container capacity according to user requirements
.

Below, the editor will introduce to you the relevant requirements for the selection of the medium of the low-temperature coolant circulating pump.
Let's take a look together
.

The selection of the medium of the low-temperature coolant circulating pump: (1) According to the required temperature, use different cooling media, which are non-corrosive and non-viscous
.

(2) When the operating temperature is above 10℃, it is recommended to use distilled water or deionized water as the cooling medium
.

(3) It is recommended to use ethylene glycol aqueous solution when the operating temperature is -30~10℃
.

(4) When the working temperature is -80~-30℃, 99% (mass fraction) ethanol can be used
.

The method of adding refrigerant: a.
Open the insulation cover on the top of the machine, then slowly add the cooling medium to immerse the coil in the low-temperature coolant circulation pump, do not add too much to prevent overflow; b.
When you want to cool the storage tank It is recommended to place the cold container in the tank first, and then add cooling medium to the tank to submerge the coil in the tank
.

Note: a.
Since ethanol is flammable, please pay attention to fire prevention (users can also choose a suitable cooling medium according to the actual situation); b.
It is strictly forbidden to use salt water (NaCl/H2O, CaCl2/H2O, etc.
) as a refrigerant; c.
The cooling medium selected by the user should be non-corrosive to stainless steel, chromium and zinc oxide
.

The above are the relevant points about the selection of the medium of the low-temperature coolant circulating pump.
I believe that everyone has a corresponding understanding of this after reading, and I hope it will be helpful to everyone
.