The word scroll is derived from the name and type of compressor used in it, which is scroll type. Scroll compressors are used in home, office, and cold air conditioning and in low and medium tonnages up to 150 tons of refrigeration. In high refrigeration tonnage, scroll chillers are used in combination, or screw, piston, or centrifugal chillers are used more.
The components and structure of the scroll chiller are similar to other types of chillers that operate based on the compression refrigeration cycle and differ only in the kind of compressors.
Scroll chillers are divided into two groups, water (with a water-cooled condenser) and air (with an air-cooled condenser), in terms of the condenser. In the following article, we are going to explain what is Scroll chiller and its application
Structure and function of scroll chiller
The structure and components of a scroll chiller are similar to other compression chillers, and only the type of compressor used in it differs. The scroll compressor consists of two fixed and movable helical spirals, which are placed inside each other, and by rotating the axis of the portable spiral in the fixed spiral, they condense the sucked refrigerant gas, thus increasing its temperature and pressure. Condensed refrigerant gas enters the condenser through the corresponding pipes, and after distillation, it enters the expansion valve and experiences a pressure drop. Then, as the pressure of the refrigerant decreases, its temperature decreases. After the liquid refrigerant is transferred to the evaporator, the fluid (water or gas) around the coil gets heated, turns into a gas again, and finally enters the compressor again, and this cycle of the compression refrigeration cycle is repeated continuously.
Advantages of scroll chiller
Since scroll compressors have fewer moving parts and less friction than other compressors, they are known as compressors with the lowest amount of noise and vibration. Therefore, scroll chillers have a longer lifespan due to low depreciation.
Among other advantages of the scroll chiller, we can mention the optimal operation of its compressor in low load mode due to its high efficiency. As a result, we will have a reduction in electricity consumption and related costs.
Nowadays, inverter technology is used in the electric motor of compressors to increase or decrease its speed, which is by the refrigeration (cooling) need, which in turn reduces the electricity consumption of the device.
It is also recommended to design and produce scroll chillers modularly to increase their capacity. For example, in an 80-ton refrigeration chiller, instead of an 80-ton compressor, two 40-ton compressors or four 20-ton compressors are used, and a separate refrigeration circuit is considered for each compressor. In this way, the compressors will gradually enter the circuit according to the amount of cooling needed in the chiller. This will effectively reduce the scroll chiller's electricity consumption on the one hand and increase the lifespan of the equipment on the other hand.
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final word
In this article, we tried to explain scroll chiller and its applications. We hope that we have provided helpful information in this regard. To view and compare all types of chillers, as well as scroll chillers, with different brands and capacities, as well as to know their updated prices, you can go to the site of Dematajhiz specialized collection (the first and most reliable specialized collection in the field of building facilities equipment and all devices air conditioners since 1383 and having three valid business licenses. Also, to get more information and advice, you can contact the heating equipment sales experts.
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