What Should Be Paid Attention to In the Selection of Industrial Chillers

FR: | Author:DANNICE | Time :2023-03-14 | 345 views: | 分享到:

Industrial chillers are used in surface treatment, food freezing, raw material production, petrochemical industries, aerospace industries and other new technology industries. Whether it is equipment cooling or process production, chillers play more advantages than natural cooling, lower temperature, more stable and more reliable.

Dannice would like to introduce the factors for the selection of chillers combined with the cases, summarized as the following 5 points.

1. energy condition

Generally, the selection of chillers is mainly based on electricity, but for areas rich in power resources, such as East China, North China, South China, and Middle China, the use of electric drives is more advantageous in the future. The electricity price is lower, the compression type water and group performance coefficient is higher, and the unit volume is smaller under the same cooling capacity, which is more conducive to industrial industrial production. For areas with tight electricity consumption, the purchase of bromine coolers with less electricity consumption is more conducive to environmental protection requirements.

2. Industrial chiller capacity

Scroll type and screw chiller capacity common range is different, the former in 10-700kw, while the latter up to 2000kw, for lower load industrial production equipment, piston or scroll compressor can be used, more flexible and power saving. For example, laboratories, research institutes. For loads above 700kw, screw chillers can be preferred, the unit system performance is better, such as industrial sand mill workshop, electroplating workshop, food freezing workshop, etc., Dannice technicians will participate in the formulation of refrigeration engineering plans for you, choose the right industrial chiller.

3. Water quality and water source conditions

Water quality mainly affects the operation of condenser pipelines, maintenance status, water quality also determines the structure type of condenser, abundant water sources, areas with better water quality, water-cooled chillers can be given priority, on the contrary, for areas with higher water prices and lack of water, air-cooled chillers are preferred to be more energy-saving, and air-cooled hot water units are mostly used in the Yangtze River Basin and southern areas. The water-cooled unit has a lower condensing temperature than the air-cooled unit, the high pressure of the refrigeration system is lower, the compressor operating conditions are numbered, the coefficient of performance is high, and the disadvantages are higher than the air-cooled unit, and the additional cooling tower system is required.

4. Unit refrigerant selection

At present, the use of R22 is still the mainstream of industrial production, considering the environmental protection requirements, there are 4 common alternatives to R22 refrigerators: R407c, R410a, R134a, etc., with the advantages of low condensing pressure and low exhaust temperature.

5. The number of chillers used

When choosing a chiller, the number of units should not be too much, generally 2-4 units, without considering the spare. A single unit can be selected for multi-head chillers. From the perspective of convenient maintenance management, try to choose the same type of unit; However, from the perspective of energy saving, if necessary, different models of units can be used to match the scheme.

In summary, the factors affecting the selection of industrial chillers are roughly energy selection, water source selection, refrigerant, chiller capacity, quantity and other factors. We need to consider the actual situation of our own engineering and choose a suitable chiller.