Limited measuring point based air conditioning system performance online detection method

Abstract

The invention discloses a limited measuring point based air conditioning system performance online detection method. Measuring points are arranged in an operating air conditioning system to record measuring point parameters in real time, and the refrigerant flow of the air conditioning system is obtained through compressor flow fitting calculation; and heat exchange amount calculation of a condenser and an evaporator is carried out in combination with a refrigerating cycle theory, the actual refrigerating capacity, the compressor actual power and the real-time EER (energy efficiency ratio) of the air conditioning system are obtained, the air volumes and pressure drop of an indoor unit and an outdoor unit are obtained through calculation based on a fan performance curve and a fan resistance-heat exchanger characteristic equation, and online detection on the performance of the air conditioning system is achieved. According to the method, design is reasonable, work is reliable, and the operating air conditioning system can be monitored online in real time without demounting instruments.

Description

technical field [0001] The invention relates to a technology in the field of refrigeration systems, in particular to an online performance detection method of an air conditioning system based on limited measurement points. Background technique [0002] The increasing popularity of the concept of smart home has gradually become the development trend of future home. Smart home needs to monitor the energy efficiency and other performance parameters of the air conditioner in real time, including refrigerant flow, cooling capacity, energy efficiency and other parameters, so as to feed back the operating status of the air conditioner to the controller in real time. Therefore, the real-time performance prediction of the air conditioner needs to be satisfied: performance monitoring requires real-time monitoring under the running state of the air conditioner. Contents of the invention [0003] The present invention aims at the defect that the existing technology cannot measure the...

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Problems solved by technology

[0003] The present invention aims at the defect that the existing technology cannot measure the relevant performance parameters such as the refrigerant flow rate through the temperature and pressure measuring points at the inlet and outlet of the compressor, so the performance parameters of the system cannot be accurately obtained, and proposes an air-conditioning system performance based on limited measuring points On-line detection method, arrange measuring points in the air-conditioning system, collect real-time operating parameters, obtain the energy efficiency of the air-conditioning system through calculation, and monitor the performance and other key parameters of the air-conditioning system in real time without disassembling the air-conditioning system

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