Centrifugal chillers are used for cooling large buildings in a centralized air conditioning system. There are other types of chillers using screw compressors and reciprocating Vibratory Tumbling/Polishing Media Factory compressors. These are usually smaller in size. Today's topic is about centrifugal chillers - the ultimate choice for any air conditioning installations higher than 500 RT (refrigeration tons)Basically, centrifugal chillers use centrifugal fans to move the refrigerant within the chiller circuit. As with any refrigeration circuit, there must be a compressor, a condenser, an expansion device, and the evaporator. In the case of the centrifugal chiller, the fan is the compressor. Rotating at very high speeds, it is capable of pressurizing the refrigerant gas so as to increase its temperature. Because the pressure is so dependent on the efficiency of the impeller of the compressor, the impeller is very carefully designed to match the system.The clearances between the impeller and the housing at the mouth ring (impeller suction) are made very small so as to reduce leaks back to the discharge.Usually inlet vanes that throttle the gas control the flow of the gas, and thus the chiller load. The expansion of the liquid to gas is usually made through a fixed orifice.The lubrication of the shaft bearings must be done within the chiller itself.

Oil passages and shaft driven pumps (with motor driven pumps at startup) is made for lubrication.The oil will find their way to the condenser and has to be extracted back to the lubrication system. Usually there will be an eductor system to suck back the oil to the oil sump.Centrifugal chillers are usually designed for low-pressure refrigerant like R-123a.These chillers sometimes surge when running, and they are very sensitive to sudden changes in loads. Therefore modern centrifugal chillers make use of electronic microprocessors to control the various parameters and timing in order to run smoothly.Indeed, when everything is perfect, the centrifugal chiller is capable of extremely smooth operation.Folks, be cool!"Gain CONFIDENCE and ACHIEVE your life's DREAMS!" Brian Tracy guides you through 21 Powerful Success Tips.

Global High-Speed Single-stage Centrifugal Blower Industry 2016 The report provides a basic overview of High-Speed Single-stage Centrifugal Blower industry including definitions, applications and industry chain structure. Global market analysis and Chinese domestic market analysis are provided with a focus on history, developments, trends and competitive landscape of the market. A comparison between the international and Chinese situation is also offered.Global High-Speed Single-stage Centrifugal Blower Industry Research Report 2016 also focuses on development policies and plans for the industry as well as a consideration of a cost structure analysis. Capacity production, market share analysis, import and export consumption and price cost production value gross margins are discussed.  A key feature of this report is it focus on major industry players, providing an overview, product specification, product capacity, production price and contact information for Global Top15 companies. This enables end users to gain a comprehensive insight into the structure of the international and Chinese High-Speed Single-stage Centrifugal Blower industry. Development proposals and the feasibility of new investments are also analyzed.

Companies and individuals interested in the structure and value of the High-Speed Single-stage Centrifugal Blower industry should consult this report for guidance and direction.The report begins with a brief overview of the Global High-Speed Single-stage Centrifugal Blower market and then moves on to evaluate the key trends of the market. The key trends shaping the dynamics of the Global High-Speed Single-stage Centrifugal Blower market have been scrutinized along with the related current events, which is impacting the market. Drivers, restraints, opportunities, and threats of the Global High-Speed Single-stage Centrifugal Blower market have been analyzed in the report. Moreover, the key segments and the sub-segments that constitutes the market is also explained in the report.