Model selection method and model selection device for multi-connected air conditioner system

Abstract

The invention discloses a model selection method for a multi-connected air conditioner system. The method comprises the following steps: determining basic unit area load of a room in which each indoor unit is arranged according to the function demand of the air conditioner system and the building attribute information corresponding to the indoor unit; correcting the basic unit area load of each room to obtain unit area load of the room, determining heat load of the room according to the unit area load and area of the room, and selecting a model with the rated power not lower than the heat load of the room for the indoor unit in the room; selecting a model of an outdoor unit according to the total rated power of all the indoor units, wherein the rated power of the selected outdoor unit is not lower than the total rated power of all the indoor units. According to the method, accurate model selection of the indoor units and the outdoor units is realized, and the problem of mismatching between the environmental demand and the capability of the indoor units and the outdoor units is solved, so that the service life of equipment is prolonged and the running cost is reduced. The invention further discloses a model selection device for the multi-connected air conditioner system.

Description

technical field [0001] The invention belongs to the technical field of air conditioning, and in particular relates to a type selection method and a type selection device of a multi-connected air conditioning system. Background technique [0002] A multi-connected air conditioning system refers to an outdoor unit connected to two or more indoor units through piping. Multi-connected air-conditioning systems are increasingly widely used in small and medium-sized buildings and some public buildings. [0003] At present, users often choose the models of indoor and outdoor units based on the indoor area and personal experience. Therefore, the selection accuracy of indoor and outdoor units is not high, and deviations are prone to occur, resulting in the inconsistency between the capabilities of indoor and outdoor units and environmental requirements. match. When the capacity of the indoor unit and outdoor unit is lower than the environmental requirements, the indoor unit and outd...

AI Technical Summary

Problems solved by technology

[0003] At present, users often choose the models of indoor and outdoor units based on the indoor area and personal experience. Therefore, the selection accuracy of indoor and outdoor units is not high, and deviations are prone to occur, resulting in the inconsistency between the capabilities of indoor and outdoor units and environmental requirements. match

When the capacity of the indoor unit and outdoor unit is lower than the environmental requirements, the indoor unit and outdoor unit will run at full load for a long time, which will shorten the service life of the equipment. The outdoor unit will run at too low load, and its COP value (the conversion ratio between energy and heat, referred to as the heating energy efficiency ratio) will be greatly reduced, which will increase the operating cost

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