In the refrigeration industry, chillers can be divided into air-cooled chillers and water-cooled chillers. According to the compressor, they are divided into screw chillers, scroll chillers, and centrifugal chillers. In terms of temperature control, it is divided into low-temperature industrial chiller and normal temperature chiller. The temperature of the normal temperature unit is generally controlled within the range of 0 degrees to 35 degrees. The temperature control of the low-temperature unit is generally around 0 degrees to -120 degrees. Let’s take a closer look at the working principle and characteristics of air-cooled chillers and water-cooled chillers.

1. Air-cooled chiller

working principle:
The air-cooled chiller uses the shell-and-tube evaporator to exchange heat between the water and the refrigerant. The refrigerant system absorbs the heat load in the water and cools the water to produce cold water. Then, the heat is brought to the finned condenser through the action of the compressor. Then it is lost to the outside air by the cooling fan.

Features:
(1) The air-cooled chiller adopts a large-capacity condenser, which can be easily operated even when it is hot.
(2) Air-cooled chillers are most suitable for areas with poor water quality, and can save other accessories for cooling towers.
(3) The air-cooled chiller does not need to be installed with a cooling water tower, and is suitable for environments with poor impurities (impurities are easily mixed into the cooling water tower, and dust will cause blockage of the cooling water circulation circuit, resulting in a decrease in cooling capacity).

2. Water-cooled chiller

working principle:
The water-cooled chiller uses the shell-and-tube evaporator to exchange heat between the water and the refrigerant. The refrigerant system absorbs the heat load in the water and cools the water to produce cold water. The heat is brought to the shell-and-tube condenser by the action of the compressor. The refrigerant exchanges heat with the water, so that the water absorbs the heat and then takes it out of the external cooling tower through the water pipe to dissipate it.

Features:
(1) High-quality compressors are the heart of industrial chillers.
(2) The box-type evaporator has a built-in automatic water supply device, which saves the expansion water tank in the engineering installation and is convenient for installation and maintenance. It is suitable for special occasions such as large temperature difference and small flow rate.
(3) The water-cooled condenser is made of the latest high-efficiency external threaded copper tube, with large heat dissipation and small size. Using CAD/CAM processing technology and cooperating with CNC processing center to complete the production, it has compact structure, high reliability, beautiful appearance, high efficiency and energy saving.
(4) Industrial chiller unit configuration: equipped with a single-chip control system, built-in compressor drying filter and expansion valve, maintenance hand valve interface and other devices, ensuring the reliable and safe operation of the machine and facilitating maintenance and repair.
(5) The multi-functional operation panel of the industrial chiller is equipped with an ammeter, a control system insurance, a compressor switch button, a water pump switch button, an electronic temperature controller, various safety protection fault lights, and a unit startup and operation indicator light, which is easy to operate and easy to use. Convenient and easy to use. Industrial chiller unit configuration: equipped with a single-chip control system, built-in compressor drying pass and expansion valve, maintenance hand valve interface and other devices, ensuring reliable and safe operation of the machine, and convenient maintenance and repair.