The brine solution has a lower condensation temperature, so it can be often used in medium-temperature and low-temperature chillers to carry cold energy. Usually, calcium chloride, magnesium chloride, and sodium chloride aqueous solutions are used. The condensation point of salt water depends on the concentration of salt water. When the concentration is added, the condensation point decreases. When the condensation point drops to a lower point, if the concentration is added again, the condensation point increases instead. Then, when brine is used as a low-temperature chiller refrigerant, how should the concentration of brine be mastered? LNEYA Refrigeration will analyze this problem with you today.

If the concentration of the brine increases, the density of the brine increases, and the power consumption of the pump that transports the brine increases. If the specific heat capacity of the brine is reduced, the brine flow required to transport a certain cooling capacity will increase, and the power consumption of the pump will be increased. Therefore, the brine concentration should be chosen based on the criterion that the freezing point of the brine is lower than the lower temperature that can be exhibited in the refrigerant system.

At present, the common selection method is to select the concentration of brine so that the condensation point is 5-8 °C lower than the evaporation temperature of the low-temperature chiller (if the water tank type evaporator is selected, take 5-6 °C, and when the shell-and-tube evaporator is selected, take the 6～8℃). In view of this, the sodium chloride solution is only used in the refrigeration system with the evaporation temperature higher than -16℃, and the calcium chloride solution can be used in the refrigeration system with the evaporation temperature not lower than -50℃.

Due to the density characteristics of the above brine, low-temperature brine chillers have been widely used in different process refrigeration industries in the refrigeration industry. The brine low temperature chiller produced by LNEYA Refrigeration Company can provide 0~-6℃ brine or ethylene glycol aqueous solution and 5℃~-80℃ frozen water brine chiller, which can be used as ice storage, low temperature air supply air conditioner and various other Chilled water requires the host of the site.