Dual turbo centrifugal chiller

Abstract

A dual turbo centrifugal chiller includes: first and second evaporators connected in series or in parallel; first and second condensers connected in series or in parallel; and first and second compressors including impellers, wherein cold water passes through the second evaporator after passing through the first evaporator, and cooling water passes through the second condenser after passing through the first condenser, the first compressor containing a refrigerant connects the first condenser to the second evaporator, and the second compressor containing a refrigerant connects the second condenser to the first evaporator, and the impellers of the first compressor and second compressor are rotated simultaneously using a single driving unit.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims priority to Korean Patent Application No. 10-2009-0102209, filed on Oct. 27, 2009, and all the benefits accruing therefrom under 35 U.S.C. §119, the contents of which in its entirety are herein incorporated by reference.BACKGROUND[0002]1. Field[0003]This disclosure relates to a dual turbo centrifugal chiller, particularly to a dual turbo centrifugal chiller configured to decrease head of a compressor among components of two individual chillers, decrease the size of the chiller, and increase efficiency.[0004]2. Description of the Related Art[0005]A general chiller includes a compressor, an evaporator, a condenser, and an expansion valve, and circulates a refrigerant to transfer heat from the evaporator to the condenser through heat exchange.[0006]FIG. 1 is a diagram schematically illustrating a general chiller 10.[0007]As illustrated in FIG. 1, the chiller 10 includes an evaporator 30, a condenser 20, and a compresso...

AI Technical Summary

Benefits of technology

[0012]This disclosure provides a dual turbo centrifugal chiller in which two compressors, two evaporators, and two condensers are included to decrease heads of the compressors, the compressors are configured to operate with the same head, and impellers of the compressors are driven by a single driving unit, thereby achieving a decrease in size and an increase in efficiency.

[0018]Since the dual turbo centrifugal chiller including the two evaporators, the two compressors and the two condensers maintains the reduced head of each compressor, it is possible to achieve the optimal performance of the compressor.

[0019]In addition, since the impellers of the two compressors are driven simultaneously using the single driving unit, it is possible to implement the compressor having a small size and high efficiency.

Problems solved by technology

As a result, the efficiency of the compressor is decreased.

Accordingly, as described above, there is a problem in that the efficiency of the compressor is decreased.

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