Water Cooled Water Chiller

What is the Water Cooled Water Chiller？

Water-cooled water chillers provide efficient cooling of fluids for medium to large projects. It has a cooling tower that transfers heat from the refrigerant vapour to the water, helping to recondense the cooling vapour and make it work in a cycle. It is not disturbed by ambient temperatures, so it is suitable for cooling tasks in a variety of environments while ensuring adequate water resources. You can use it in industrial manufacturing, commercial premises cooling, etc.

How a Water-Cooled Water Chiller Works？

Evaporation

When a water-cooled water chiller operates, the chilled water exchanges heat with the ambient air that needs to be cooled down for your cooling purposes. The heat-carrying chilled water enters the evaporator and transfers the heat to the refrigerant. The cooled chilled water continues to circulate for heat exchange and heat transfer to achieve continuous and efficient cooling. The refrigerant efficiently absorbs the heat from the water and transforms from liquid to gas.

Compression

The compressor of a water-cooled water chiller draws in low-pressure refrigerant vapour, pressurises it and sends it to the condenser. The compressor acts as a power source to drive the refrigerant in a continuous cycle, helping the water-cooled chiller to achieve a constant and stable cooling effect.

Condensation

The refrigerant vapour entering the condenser exchanges heat with the cooling water in the cooling tower of the water-cooled water chiller. The cooling water that absorbs heat is pumped to the cooling tower, while the refrigerant vapour that releases heat recondenses into a liquid.

Expansion

The recondensed refrigerant passes through the expansion valve and is converted to a low-temperature, low-pressure state where it can continue to absorb heat. The refrigerant re-enters the evaporator and is rapidly converted to vapour as it continues to absorb heat from the chilled water. With this cycle, the chiller achieves a constant and stable cooling effect. In addition, you can also automatically adjust the flow of refrigerant through the expansion valve to meet different needs.

Water Cooled Water Chiller vs. Air Cooled Water Chiller 

Water-cooled water chillers transfer heat from cooling vapours to water, while air-cooled water chillers cool by transferring heat from cooling vapours to ambient air. Air-cooled water chillers do not need to be equipped with a cooling tower, but do need to be equipped with a fan to draw in ambient air.

Comparison of Cooling Efficiency

Water-cooled water chillers use water with a higher thermal conductivity for heat exchange and have a higher cooling efficiency, which makes them commonly used in medium to large projects. Air-cooled water chillers perform better in smaller projects. In addition, water-cooled water chillers are not affected by ambient air and perform well in higher temperature environments. However, air-cooled water chillers are affected by ambient air and have low cooling efficiency in higher temperature environments.

Cost Comparison

Water-cooled water chillers are usually more expensive than air-cooled chillers because they require additional cooling towers and water pipes. Air-cooled water chillers, on the other hand, are simpler and require less initial cost. But water-cooled water chillers are more energy efficient, which means lower energy costs. Therefore, the high performance and energy efficiency of water-cooled water chillers make them cost-effective in terms of long-term performance.

Comparison of Installation and Maintenance

Water-cooled water chillers require more complex installation and maintenance due to their more complicated structure. Also, it requires regular water treatment to prevent corrosion, performance degradation and even damage caused by scale. Therefore, it requires higher installation and maintenance costs. Air-cooled water chillers, on the other hand, are more compact and simpler to install and maintain.

How to Choose between a Water Cooled and an Air Cooled Water Chiller？

• Project Size: If you are looking for a satisfactory cooling solution for medium to large projects such as airports, shopping malls, and large-scale processing plants, water-cooled water chillers can better meet the cooling needs. Air-cooled water chillers are more suitable for smaller projects or projects with space limitations.
• Conditional resources: If your project is located in an area of high ambient temperature, a water-cooled rather than an air-cooled water chiller has a higher working efficiency. If your project does not have sufficient water resources, then water air-cooled chillers will be more suitable.
• Noise: Air-cooled water chillers have fans that make more noise. Water-cooled water chillers do not require a fan and are quieter in operation. Thanks to this, you can use water-cooled water chillers for projects that require strict noise levels.
• Budget: Air-cooled water chillers have a lower initial cost, making them a cost-effective choice for small factories or temporary use. Water-cooled water chillers have higher initial and maintenance costs, but are more cost-effective for larger projects and long-term use. Water-cooled water chillers also have a longer service life.

Application of Water Cooled Water Chiller 

Medical Industry

You can use water-cooled water chillers in hospitals to achieve better storage conditions for equipment and tools, as well as to maintain a cool operating theatre environment. In addition, the preparation of medical drugs also requires water-cooled chillers to achieve the ideal temperature range, which ensures stability of the preparation and conformity of your drugs.

Industrial Manufacturing

• Process Machining: A large amount of heat is generated during industrial manufacturing processes, such as machine tool machining and injection moulding. Excessive temperatures may affect the production quality of the finished product or affect the machining accuracy of the equipment. A water-cooled water chiller can effectively solve this problem. It can also accelerate the cooling of the finished product and shorten the cooling waiting time, thus improving production efficiency.
• Semiconductor: In the semiconductor industry, chip packaging requires strict temperature control, and the use of water-cooled water chillers can enhance chip stability. This can reduce the probability of product damage for you, thus reducing additional cost loss.
• Equipment cooling: High-power equipment in the industry (such as laser equipment) will generate heat during operation and affect performance. You can use water-cooled water chillers for rapid cooling and heat dissipation. By maintaining the right operating temperature, you can improve the performance and service life of your equipment.

Food Industry

Whether it is the processing or storage of food and beverages, low and stable temperatures are required. Water-cooled water chillers not only provide rapid cooling in processing but also provide a constant and stable low-temperature environment in storage, thus ensuring the quality and safety of food and beverages.

Commercial and Architectural

Water-cooled water chillers can be integrated into air-conditioning systems to provide efficient and consistent cooling to keep the air cool. You can use it in various locations such as shopping malls, airports, office buildings, schools, and more for a comfortable environment. In addition, it operates with a low noise level that does not affect customers and employees, thus improving work and operational efficiency.