Quality appraisal of centrifugal chillers

centrifugal chillers are an efficient, cost-saving way to cool buildings. They work by creating a vortex of air within the tower, which is then cooled by the surrounding air as it enters the tower. They are weatherproof and won't overheat because they don't rely on electricity to run. The
centrifugal chiller is an affordable and effective way to cool your home or business without the electricity required to run it. The working principle of the centrifugal chiller is to create a vortex of air in the tower, which is then cooled by the surrounding air as it enters the tower. This improves efficiency compared to traditional refrigeration systems, such as those found in ice machines.
In the quality case of centrifugal chillers, quality appraisal is an essential link. Zhongke Testing provides quality appraisal services for centrifugal chillers.

centrifugal chiller include centrifugal refrigeration compressor, evaporator, condenser, throttling mechanism, main motor, air extraction recovery device, lubricating oil system and electrical control cabinet. There are different classifications according to different requirements and standards.
1. Classification according to the combination form of the unit.
centrifugal chillers can be divided into two types: assembled type and decentralized type.
2 and
centrifugal chillers can be divided into three categories: open type, semi-closed type and fully enclosed type according to the sealing form of the unit system.
3, classified according to the assembly method of evaporator and condenser
centrifugal chiller can be divided into single-cylinder type and double-cylinder type according to the assembly method of evaporator and condenser.

JB/T 3355-1998 Centrifugal chiller
CB/T 4358-2013 Marine centrifugal chiller
GB 19577-2015 Chiller energy efficiency limit value and energy efficiency grade
GB/T 18431-2014 Steam and hot water lithium bromide absorption chiller
GB 29540-2013 Energy efficiency limit value and energy efficiency grade of lithium bromide absorption chiller

was entrusted by a court to analyze the causes of various failures of the centrifugal chiller involved. The expert group discussed and conducted comprehensive quality and technical analysis on the relevant information and on-site investigation and inspection of the "centrifugal chiller" involved, and made the following suggestions and conclusions:
1, the "centrifugal chiller" involved does not comply with JB/T 3355-1998 "Centrifugal Chiller" and GB There are many quality defects in the basic requirements of the 19577-2015 "Energy Efficiency Limits and Energy Efficiency Levels of Chillers";
2, the "centrifugal chiller" involved did not conduct hydraulic tests in accordance with the requirements of national standards, resulting in the "centrifugal chiller" involved "Abnormal deformation and water leakage occurred in the water system; in addition, the pressure loss of cold water and cooling water was greater than 110% of the nominal specified value; the total electrical power consumption was greater than 105% of the nominal value of the unit; the quality of the fan belt was not up to standard, resulting in multiple surges and high pressure phenomena, and frequent shutdowns after reset.