Real-time cold load determination method of air-conditioner room

A cooling load and air conditioning technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as affecting accuracy and practicability, difficult to reflect random dynamic factors, etc., achieving strong real-time performance and wide application range , the effect of a small amount of calculation

Inactive Publication Date: 2011-05-04
SHANGHAI UNIV
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AI Technical Summary

Problems solved by technology

This method needs to predict a large amount of historical data, and it is difficul

Method used

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  • Real-time cold load determination method of air-conditioner room
  • Real-time cold load determination method of air-conditioner room
  • Real-time cold load determination method of air-conditioner room

Examples

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Embodiment Construction

[0022] The following is attached figure 1 And attached figure 2 The preferred embodiment shown is described in further detail.

[0023] Select an air-conditioned and refrigerated office room in Shanghai with an area of ​​27.09m2 2 , 3.3m high, facing south, located on the second floor of a 4-story office building. The south is an exterior window with a window-to-wall ratio of 0.287, and the north is an interior door. The set temperature of the air conditioner is 26°C, and the circulating air volume of the air conditioner used in the known experiment is 480m 3 / h. Room equipment conditions such as figure 2 shown. The specific implementation steps of the method for determining the real-time cooling load of an air-conditioned room are as follows:

[0024] (1) Determine the structure of the cooling load model: the structure of the cooling load model indicates that the air-conditioning cooling capacity input of the room system , the real-time cooling load of the room ,...

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Abstract

The invention relates to a real-time cold load determination method of an air-conditioner room. The method is as follows: on the basis of the heat balance process of a room system, determining a cold load model structure, measuring the actual conditions of real-time cold supply amount input of an air conditioner and room temperature response, identifying model parameters, establishing a real-time cold load model, and calculating real-time cold load in the air-conditioner room. By utilizing the real-time cold load determination method, precise and reliable real-time cold load requirement data can be provided for operation and control of the air conditioner, the problems that the heat-transfer mechanism modeling method and the prediction method need a large amount of priori knowledge and historical data and is difficult to cover dynamic influence factors of the load and the like are avoided, and the real-time cold load requirement of the air-conditioner room can be reflected in real time. The real-time cold load determination method is wide in application range and strong in real-time property, and can be widely applicable to the aspects of energy conservation control at the operating stage of the air conditioners and energy conservation modification of the air conditioners of old buildings and the like.

Description

technical field [0001] The invention relates to a method and system for centralized cooling of HVAC in civil buildings, in particular to a method for determining the real-time cooling load of an air-conditioning room required for energy-saving optimization control of air-conditioning operation. Background technique [0002] At present, the power consumption of civil buildings alone accounts for 22-24% of the country's total power generation, of which HVAC energy consumption accounts for about 50-60%, and this proportion is even higher in some megacities. According to Chongqing and Shanghai According to statistics, the electricity consumption of central air-conditioning has accounted for 23% and 31.1% of the city's total electricity consumption respectively. As a large power consumer, air conditioners should become the key targets of energy conservation and emission reduction. According to industry experts' prediction, central air conditioners still have at least 30% energy s...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 刘廷章龚安红姚丽霞
Owner SHANGHAI UNIV
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