Construction method for energy consumption model of existing building air conditioner and energy consumption prediction method for air conditioner

Abstract

The invention provides a construction method for an energy consumption model of an existing building air conditioner. The construction method comprises the steps of acquiring the energy consumption ofthe building air conditioner, the indoor and outdoor dry-bulb temperature, the solar radiation amount, the indoor and outdoor relative humidity and the rated power of each heating device in a building; calculating the energy consumption of a building envelope according to the outdoor dry-bulb temperature, the indoor dry-bulb temperature and the solar radiation amount; calculating the total energyconsumption of the internal disturbance of fresh air according to the energy consumption of the building air conditioner and the energy consumption of the building envelope; calculating the per-capita fresh air volume of the energy consumption model of the building air conditioner, the number of persons and the coefficients of performance of illumination and equipment according to the total energy consumption of the internal disturbance of the fresh air, the indoor and outdoor dry-bulb temperature, the indoor and outdoor relative humidity and the rated power of each heating device in the building; determining the energy consumption model of the existing building air conditioner according to the per-capita fresh air volume, the number of the persons and the coefficients of performance of the illumination and the equipment. The invention further discloses an energy consumption prediction method for the existing building air conditioner utilizing the constructed energy consumption modelof the existing building air conditioner. The construction method and the energy consumption prediction method have the advantage that the air conditioning load predicted by using the model is closerto the actual air conditioning load of a building.

Description

technical field [0001] The invention relates to the field of computer technology, and more specifically, to a method for constructing an energy consumption model of an air conditioner in an existing building and a method for predicting energy consumption of an air conditioner. Background technique [0002] For the research on energy saving of existing large-scale public building air-conditioning systems, in terms of building air-conditioning energy consumption prediction, it can be roughly divided into two categories: [0003] One is to create a building air-conditioning energy consumption model based on the assumed thermal physical model of the building body; further assumptions include indoor and outdoor environmental parameters such as meteorological parameters, indoor disturbance lighting and equipment operation, personnel activities, and fresh air conditions to obtain energy consumption data. However, whether it is in the building itself, meteorological parameters, or t...

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Problems solved by technology

However, whether it is in the building itself, meteorological parameters, or the lighting and equipment operation, personnel activities, and fresh air conditions in the room, it is based on assumed theoretical data and design conditions. These data deviate from the actual situation to a certain extent, resulting in The results predicted by the model deviate greatly from the actual energy consumption of air conditioners

[0004] Another type is based on actual data, through mathematical methods, to identify a calculation model that can be better consistent with the actual air-conditioning energy consumption data, but this method belongs to the "black box model", which is often subject to certain restrictions in application and is difficult to obtain. It reflects the basic thermal process of the building, and it is difficult to explain the composition and distribution of energy consumption in each part

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