Top Chiller Selection Method

2022/08/31 ClassificaçãoNotícias do sector 356

Top Chiller Selection Method

With the acceleration of industrialization, the use of machinery and equipment has been comprehensive, and more and more industries need to use chillers, such as pharmaceutical industry, plastics industry, electronics industry, electroplating industry, machinery industry, construction industry, vacuum coating, Food industry, chemical fiber industry, etc. However, the long-term operation of the machine will cause continuous heating of the equipment, and the production of some products has strict requirements on the temperature of the machine. If the enterprise does not choose a high-quality chiller, it will affect the qualification rate of the product and greatly shorten the service life of the machine.

Let us first have a general understanding of the basic concepts of chillers. Chillers also become chillers, coolers, refrigeration systems and more. Its working principle is a multifunctional temperature-controlled machine that removes liquid vapour machine through compression or heat absorption refrigeration cycle. Chillers are generally used in air conditioning units and industrial cooling. According to the form of refrigeration, chillers are divided into two types: water-cooled chillers and air-cooled chillers.

The characteristics of the water-cooled chiller are: fully automatic control, equipped with precise electric temperature controller, which can run smoothly for a long time. Using high-efficiency heat transfer heat exchanger, the loss of cooling capacity is small, the oil is easy to return, and the heat transfer tube will not freeze and crack. Adopt imported high-performance compressor, high EER value, low noise and stable operation.

The characteristics of the air-cooled chiller are: no cooling tower, easy installation, convenient movement, suitable for places lacking water sources. Low noise fan motor, better cooling and condensation effect, stable throttling structure, excellent anti-rust treatment. Adopt imported high-performance compressor, high EER value, low noise and stable operation.

These two types of chillers have their own advantages, but in the future development, water-cooled chillers are more dominant. Technically, the energy efficiency ratio of water-cooled chillers is 300 to 50 OMal/h higher than that of air-cooled chillers. In terms of price, water-cooled chillers are much higher than air-cooled chillers. In use, the air-cooled chiller has great requirements for ventilation, humidity, temperature (not higher than 40°C), air pH and so on because it only relies on fans to dissipate heat.

The water-cooled screw chiller is a type of chiller that is more commonly used in industrial production today. It adopts a horizontal shell-and-tube condenser and a shell-and-tube evaporator. It has the characteristics of simple structure, stable heat exchange, long-lasting efficiency and convenient maintenance. Of course, on this basis, the products of each company have also improved. Our company can provide customized services in the form of a single machine or a combination of multiple machines according to customer needs and the size of the cooling tonnage.

Many companies need to use chillers, but they are not familiar with the situation of chillers, so how to choose a more suitable industrial chiller? In fact, there is a formula for reference: cooling capacity = chilled water flow * 4.187 * temperature difference * coefficient. Among them, the chilled water flow refers to the chilled water flow required when the machine is working, and the unit is liters/second. The temperature difference refers to the temperature difference between the water entering and leaving the machine. 4.187 is a fixed value. The air-cooled coefficient is 1.3, and the water-cooled coefficient is 1.1. After the calculation, the appropriate chiller can be selected according to the obtained cooling capacity.
The chiller is not only the protection of equipment and products, but also the protection of the life safety of employees, so choosing the right chiller is the top priority.

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