Thermodynamic model calculation method and device for multi-device operation of cold source system

Abstract

The invention discloses a thermodynamic model calculation method and equipment for multi-equipment operation of a cold source system, which are not limited to analysis of single equipment, but analyze the whole cold source system and consider group control among equipment, that is, a thermodynamic model of the cold source system is constructed based on a water chilling unit, a cooling tower and a water pump. Due to the fact that the water chilling unit, the cooling tower and the water pump are closely connected, mutually coupled and influenced, hydraulic balance and thermodynamic balance are achieved, hydraulic calculation and thermodynamic calculation are separated, hydraulic parameters of the water chilling unit, the cooling tower and the water pump are calculated firstly, then thermodynamic parameters of the water chilling unit, the cooling tower and the water pump are calculated, the calculation speed is high, and calculation efficiency is high. The method not only saves the time of iterative calculation, but also lays a foundation for the rapid diagnosis of the system, thereby solving the technical problems that the influence of group control among the water chilling unit, the cooling tower and the water pump is not considered, the calculation rate is low, and sufficient data volume is difficult to calculate rapidly for the rapid diagnosis and analysis of the air conditioning system.

Description

technical field [0001] The present application relates to the technical field of air conditioning system control, and in particular to a thermodynamic model calculation method and equipment for multi-device operation of a cold source system. Background technique [0002] The rapid diagnosis analysis and optimization of the air conditioning system need to be established on the basis of a perfect thermodynamic model. In the actual air conditioning system, the operating conditions under the design conditions are the best. However, in reality, due to changes in external conditions, the operation of the air conditioning system deviates from the optimal working condition. When the building is used for different purposes due to changes in demand, such as office, catering, etc., the cooling load and humidity load are not the same. In addition, the influence of atmospheric temperature, humidity, and wind speed will be transmitted to the inside of the air conditioning system through ...

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Problems solved by technology

[0005] This application provides a thermodynamic model calculation method and equipment for the multi-equipment operation of the cold source system, which is used to solve the problem that the influence of group control among chillers, cooling towers and water pumps is not considered in the existing ones, and the calculation rate of the thermodynamic model is low and difficult Calculating a sufficient amount of data in a short period of time for the technical problems used in the rapid diagnosis and analysis of the air conditioning system

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