Running energy efficiency optimizing control method and device for cold engine of water cold accumulation air condition system of hospital

Abstract

The invention relates to a running energy efficiency optimizing control method and device for a cold engine of a water cold accumulation air condition system of a hospital. The running efficiency optimizing control method comprises the following steps of S1. according to history running data of the air condition system, acquiring a performance coefficient model of a large host machine and a performance coefficient model of a small host machine; S2. based on the obtained bottom chilled water temperature and the top chilled water temperature of a cold accumulation water tank, and according to the bottom chilled water temperature and the top chilled water temperature, calculating cooling load of the cold accumulation water tank; S3. according to the cooling load of the cold accumulation water tank, the performance coefficient model of the large host machine and the performance coefficient model of the small host machine, acquiring integral performance coefficient value of the air condition system; and S4, according to the integral performance coefficient value of the air condition system, controlling the operational mode of the air condition system. According to the large host machine and small host machine of different performance coefficient models, chilled water is produced and cold is accumulated, so that under the situation of the same cold accumulation capacity, the best host machine running mode can be found out, and the purpose of energy saving during running is achieved.

Description

technical field [0001] The invention relates to the field of central air-conditioning, and more specifically relates to a method and device for optimally controlling the energy efficiency of cold machine operation in a hospital water storage air-conditioning system. Background technique [0002] In my country, the total energy consumption of buildings in 2014 exceeded 1.25 billion tons of standard coal, accounting for 30% of the total energy consumption of the society. The energy consumption of central air-conditioning accounts for 65% of the total energy consumption of buildings, of which the energy consumption of air-conditioning machine rooms accounts for about 70% of energy consumption. Therefore, real-time monitoring, evaluation and control of the energy efficiency level of the main equipment in the central air-conditioning system computer room, especially the refrigeration host, is very necessary for the energy-saving operation of the central air-conditioning system. ...

AI Technical Summary

Problems solved by technology

The energy efficiency of the main engine of the central air conditioning system is usually calculated using the definition of COP (Coefficient of performance, that is, performance system) and based on real-time measurement values. The traditional water storage refrigeration main engine operation control simply uses the cooling time and cooling capacity control method, and does not consider cooling. Whether the combined operation mode adopted by the main engine is efficient and energy-saving

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