Central air conditioner water chilling unit energy efficiency monitoring and evaluating method

Abstract

The invention discloses a central air conditioner water chilling unit energy efficiency monitoring and evaluating method. The central air conditioner water chilling unit energy efficiency monitoring and evaluating method comprises the following steps that 1, a water chilling unit sequential optimization control strategy based on cold load probability density distribution is established, and a water chilling unit sequential starting and stopping control mode is determined on the basis of analysis on cold load probability density distribution and the water chilling unit rated refrigerating capacity range; 2, a water chilling unit load distribution optimization control strategy is established, a target equation taking water chilling unit total energy consumption as the target is established,the starting and stopping state and part of the load rate of all units are taken as optimization parameters, optimizing and solving are conducted through a hybrid discrete nonlinear programming algorithm, and a control logic for the water chilling unit load distribution optimization control strategy is formed; and 3, energy consumption of a water chilling unit is evaluated. Therefore, the water chilling unit total energy consumption can be reduced, and the good energy-saving potential is achieved.

Description

technical field [0001] The invention relates to the technical field of air-conditioning energy saving, in particular to a method for monitoring and evaluating the energy efficiency of a central air-conditioning chiller. Background technique [0002] With the country's call for energy saving and emission reduction and people's continuous improvement of indoor thermal environment requirements, central air-conditioning systems are being used more and more widely. The energy consumption of central air-conditioning accounts for more than 50% of building energy consumption, so it is particularly important to monitor the energy efficiency of central air-conditioning chillers. [0003] At present, the comprehensive partial coefficient IPLV is commonly used as the partial load efficiency index of the chiller for air conditioning. The air-conditioning system of the central air-conditioning chiller generally includes multiple chillers with different rated cooling capacity and models. ...

AI Technical Summary

Problems solved by technology

The air-conditioning system of the central air-conditioning chiller generally includes multiple chillers with different rated cooling capacity and models. The operating efficiency of the chiller is related to the cooling load of the air conditioner, but the cooling load changes with time. Generally, methods such as IPLV do not It can effectively respond and solve the problem of optimal operation of multiple chillers with different rated cooling capacity and models under different cooling load conditions

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