Scroll Compressor Chillers
Scroll compressors are positive displacement compressors. They are welded-sealed emits more often in 10 to 15 tons of range. Power control units supported Cycling compressors on and off with the step of 10 and 15 tons. For example, a 25-ton chiller will consist of 10 tons and 15 tons of the compressor. Capacity would be controlled by Cycling compressors on and off with the step of 10 and 15 tons.
Scroll compressor consists of spiral curls, which are attached to a flat base. There are two suitable scrolls, which hold gas pockets when placed together. Cm. Fig. 24-74. One scroll of turns around the fixed scroll. As the gas enters the scroll, he gradually shrink small pockets (volume). From there, he is exempt from liability.
Advantages of spiral compressors : they are effective, quiet, with few moving parts, their size and weight, and that they can pump refrigerant without damage of the compressor. Oil pump, located at the bottom of the crankshaft oil scroll compressors. Scroll compressor has a check valve to prevent reverse flow of refrigerant when the system is turned off. This check valve is needed because the scrolling does not create a lot of resistance to the flow of the refrigerant with a high-side on the low side of the system during the off cycle.
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Industrial 