the refrigeration principle of the cooling water circulation mechanism (chiller manufacturer)

Chuanbenster ChillerUnit Features

Air-cooled chiller units can be used in small systems. Most large units are water-cooled. In terms of the initial investment of the main unit, the water-cooled one is a bit less than the air-cooled one. However, when adding components such as cooling towers and electronic water treatment devices in the machine room, the cost savings are not significant. Moreover, in terms of long-term operation, the cooling efficiency of water-cooled units will relatively decline, while that of air-cooled units will not.

Air-cooled chiller units adopt air cooling method, eliminating the cooling tower, cooling water pump and piping system required by the cooling water system. This avoids condenser scaling and water pipe blockage in areas with poor water quality, and also saves water resources. Among chiller air-conditioning equipment products, it is the most economical and simple model for maintenance.

The one-time investment of air-cooled chiller units is slightly higher than that of water-cooled chiller units. However, the annual operating cost is lower than that of water-cooled chiller units. The construction cost of the machine room is the lowest among various air-conditioning cold and heat source systems. The maintenance cost is about half of that of water-cooled units or boilers.

The noise and volume of air-cooled chiller units are larger than those of water-cooled ones, and they can only be installed outdoors. Most water-cooled units are installed in basements.

Product Features of Air-cooled Chillers:

1. The unit's compressor is a fully enclosed scroll compressor and electrical control components, equipped with a condenser and evaporator made of high-efficiency heat transfer copper tubes;

2. Equipped with various safety protection devices, it is energy-saving, has low noise, long service life and is easy to operate. It adopts a liquid crystal display human-machine interface, which is simple and convenient to operate, and the operating status is clear at a glance;

3. The models have a single-compressor or multi-compressor combined refrigeration system. The compressors can operate alternately automatically according to the load change, balancing the running hours of each compressor, achieving the effect of saving energy consumption and extending the service life of the chiller unit. It is convenient for energy adjustment and is more energy-saving under partial load;

4. The whole machine has a box-shaped structure, with beautiful appearance and compact structure. The operation of the unit can be checked at any time. The unit can be equipped with its own water tank and circulating pump according to the cooling capacity. It does not require a cooling tower and cooling water pump, and the installation and maintenance are simple and convenient;

Chuanbenster ChillerFunctions

1. The chiller is applied to the cooling of plastic processing machinery molding molds, which can greatly improve the surface finish of plastic products, reduce surface streaks and internal stress of plastic products, make the products non-shrinking, and facilitate the demolding of plastic products, accelerating product setting, thus greatly improving the production efficiency of plastic molding machines;

2. The chiller is applied to the cooling of the spindle lubrication and hydraulic system transmission medium of CNC machine tools, jig boring machines, grinders, machining centers, modular machine tools and various precision machine tools, which can accurately control the oil temperature, effectively reduce the thermal deformation of machine tools and improve the machining accuracy of machine tools.

Differences between Air-cooled and Water-cooledIndustrial chillers are divided into water-cooled industrial chillers and air-cooled industrial chillers. The main difference between them lies in the condensers. The condenser of a water-cooled chiller mainly takes away heat through circulating cooling water. Therefore, the condenser of a water-cooled chiller is usually also called a water cannon. Different from water-cooled ones, air-cooled industrial chillers use fans for heat dissipation. Usually, a finned condenser is adopted. Fins actually refer to aluminum sheets, that is, aluminum sheets are externally installed at the parts that need heat exchange to achieve efficient heat dissipation, and then hot air is extracted through dedicated fans.

So when the workshop temperature is relatively high, apart from being affected itself (too high condenser temperature will directly lead to high-pressure alarm of the industrial chiller and a decline in refrigeration capacity), the air-cooled chiller will also have a direct impact on the workshop temperature. The advantages of the water-cooled chiller are obvious. The water-cooled industrial chiller needs a cooling water tower to circulate cooling water for cooling. Therefore, to use a water-cooled chiller, it is necessary to install a cooling water tower, a cooling water circulation pump, and pipelines, which is rather cumbersome. Compared with the air-cooled industrial chiller, its convenience of movement is outshined. However, in most cases, factories are already equipped with a cooling water circulation system.

Chuanbenster ChillerRefrigeration Principle

Air-cooled chillers and water-cooled chillers are used for outdoor installation and operation. The air-cooled chiller directly circulates air mechanically over the machine's condenser coils to directly expel heat to the atmospheric air for cooling. The water-cooled chiller is similar, except that it sprays water mist on the condenser coils to help cool the condenser, making the water-cooled chiller more efficient than the traditional air-cooled one. Usually, no remote cooling tower is required for these types of packaged air-cooled or water-cooled chillers.

Refrigeration principle of water-cooled indirect cooling in the electroplating industry:

The water in the bottom basin of the cooling tower is pumped to the condenser of the chiller to cool the condenser. When it flows back into the cooling tower and sprays down, the water is cooled by the fan on top of the cooling tower and then flows back into the bottom basin of the cooling tower. This cycle repeats. While the condenser dissipates heat, the refrigerant inside liquefies and then flows into the evaporator in the water tank for evaporation. During evaporation, heat is absorbed, thus cooling the water in the water tank. The cooled water is pumped to the heat exchanger (separated in the middle, with water on one side and sulfuric acid on the other side), and then the sulfuric acid is cooled through the process of heat transfer. This is such a cycle. The advantage of this product lies in its convenient installation, relatively longer service life compared with direct freezing, and the chiller is not easily corroded by acids and alkalis.

Refrigeration principle of water-cooled direct cooling:

The water in the bottom basin of the cooling tower is pumped to the condenser of the chiller to cool the condenser. When it flows back into the cooling tower and sprays down, the water is cooled by the fan on top of the cooling tower and then flows back into the bottom basin of the cooling tower. This cycle repeats. While the condenser dissipates heat, the refrigerant inside liquefies and then flows into the evaporator for evaporation. During evaporation, heat is absorbed, thus cooling the sulfuric acid (tank solution) in the evaporator. The cooled sulfuric acid is pumped toElectroplating(Oxidation) tank. This is such a cycle.

The direct freezing and indirect freezing of the chiller have the same usage effect. However, it is obvious that the direct freezing chiller is less safe than the indirect freezing chiller, and the former equipment is prone to corrosion and has a relatively shorter lifespan. The direct freezing equipment has a slight advantage, but when calculating based on the length of service life, the indirect freezing chiller has a longer service life than the direct freezing chiller. From this, the value of the indirect freezing chiller can be calculated. This is also one of the development trends of environmentally friendly and energy-saving chillers.