Since the reform and opening up, the rapid development of machinery industry, the rapid development of refrigerator. The freezer has many components, here we analyze the refrigerator open and closed cooling tower, the working principle of the content.
Open type cooling tower:
Open type cooling tower cooling principle is through the circulating water spray, spray to PVC filler, through contact with water and air to heat, another fan driven air flow tower, and water heat exchange with the hot air flow, so as to achieve cooling.
Closed cooling tower industrial chiller:
The cooling principle of the closed cooling tower is that it is simply two cycles: an inner loop and an outer loop. No filler, the main core part of the cooling device for the purple copper tube.
Inner loop: docking with object equipment to form a closed loop system. To cool the object device, and take the heat from the object to the cooling unit.
Outer circulation: in the cooling tower, cooling tower itself. Not with internal circulating water contact, only through the copper cooling tower for cooling heat exchanger. Under the cooling mode, the motor is operated according to the temperature of the water by automatic control.
The two cycle, in the spring and summer of the two quarter of the environment temperature is high, the need for two cycles at the same time running. Autumn and winter environment temperature is not high in the two quarter, most of the case only an inner loop.
Characteristics of closed cooling tower:
(1) the cooling medium in a closed conduit flow with the outside air contact, heat through the heat exchanger tube wall with an external air and spray water heat and mass and heat transfer, the ultimate realization of the cooling medium and cooling equipment. So is cooled medium will not be contaminated, evaporation, concentration, without replenishment dosing, thus to protect the associated equipment performance and life, the daily management is also very convenient.
(2) without regular maintenance and maintenance, stable and safe operation, can reduce the failure rate of associated equipment, suitable for continuous operation of the system.
(3) the cooling medium is not exposed to sunlight and does not contact with the air, so it will not produce algae and salt crystal. It can ensure the high performance of the system.
(4) can be dry run, will not breed all kinds of bacteria, so it is particularly suitable for the occasion of air purification needs, but also often used in dry areas.