Air conditioning system energy efficiency on-line detection and diagnosis analyzer and method
A technology for diagnosis and analysis of air conditioning systems, applied in heating and ventilation control systems, heating and ventilation safety systems, heating methods, etc. problems, to achieve the effect of optimizing operation strategy, reducing operation cost and improving comprehensive energy efficiency
Inactive Publication Date: 2018-12-25
宁波东源节能科技有限公司
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Problems solved by technology
Since the host device only marked the energy consumption COP under the rated working condition, the energy efficiency COP during actual operation cannot be monitored in real time
[0003] In order to solve the problem of not being able to monitor the energy efficiency COP of the main engine in real time when it is actually moving, the existing technology needs to increase the measurement parameters of the air conditioning system and the monitoring system to collect, process and display data, and this method just increases the central air conditioning. The cost of the system runs counter to the development trend of low cost
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[0035] Such as figure 2 As shown, the air-conditioning energy efficiency online detection, diagnosis and analysis method of the present invention includes the following steps,
[0036] Step S1: Data collection, collecting various parameters of the central air conditioner, and converting them into standard voltage and current signals or communication protocols.
[0037] Step S2: Calculation of energy efficiency. Based on the collected parameters of the central air conditioner, the system energy efficiency ratio, unit energy efficiency ratio, water pump efficiency and transmission coefficient of the central air conditioner are calculated.
[0038] The formula for calculating the energy efficiency ratio of the system is as follows:
[0039]
[0040]
[0041] qc(h)i=V i ρ i c i Δt i / 3600; (3)
[0042] Where: EER sys is the cooling energy efficiency ratio of the system; Q SC is the cumulative cooling capacity (kWh) during the system test; ∑N i is the cumulative pow...
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The invention relates to the technical field of air conditioner energy efficiency detectors, in particular to an air conditioning system energy efficiency on-line detection and diagnosis analyzer. Theair conditioning system energy efficiency on-line detection and diagnosis analyzer comprises an air conditioning unit parameter detecting module used for collecting parameters of a central air conditioner. The air conditioning unit parameter detecting module comprises a sensor unit. The sensor unit is connected with a collecting controller. The collecting controller is connected with a work station by an industrial communication bus. Through adopting the method and structure, the air conditioning system energy efficiency on-line detection and diagnosis can monitor and record the machine roompipeline pressure, temperature, flow amount and the water pump, cooling tower and unit power consumption data in real time. Water pump efficiency, unit energy efficiency ratio and water pump transmission data can be obtained by calculating and analyzing. The analytical data are compared with data related to a similar machine room to analyze the energy cost and the equipment status of the machine room. Factors affecting energy efficiency are analyzed, the system operating strategy is optimized, the system comprehensive energy efficiency is improved, and the operation cost can be reduced.
Description
technical field [0001] The invention relates to the technical field of air-conditioning energy efficiency detectors, in particular to an air-conditioning system energy efficiency online detection and diagnosis analyzer and method. Background technique [0002] The energy consumption ratio of central air-conditioning hosts in the air-conditioning system and even the entire building is very large. During the operation of the air-conditioning host, there is energy conversion, that is, electric energy or other energy is converted into cooling or heat. The conversion efficiency is called host efficiency COP , under different operating conditions, the performance COP of the host is different. Even under the same operating conditions, different models or even the same model host performance COP is different. Since the host device only marks the energy consumption COP under rated working conditions, it cannot monitor the energy efficiency COP during actual operation in real time. ...
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IPC IPC(8): F24F11/32F24F11/64F24F11/88
CPCF24F11/32F24F11/64F24F11/88
Inventor杨爱明胡晋维吴雨霏马帅徐宁杨树蕙蒋静
Owner宁波东源节能科技有限公司