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Optimal design method of large-scale central air-conditioning chilled water pipe network based on suboptimal algorithm

A central air-conditioning and optimization design technology, which is applied in design optimization/simulation, market forecasting, marketing, etc., can solve problems such as large differences in optimization results and long calculation time for a single optimization, to achieve improved adaptability, reliable calculation results, cost-saving effect

Active Publication Date: 2021-07-16
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The work of early researchers shows that the traditional optimization algorithm has a certain optimization effect on the optimization design of pipe network diameter and topology, but there are also disadvantages such as easy to fall into local optimum, large difference in optimization results, and long calculation time for single optimization.

Method used

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  • Optimal design method of large-scale central air-conditioning chilled water pipe network based on suboptimal algorithm
  • Optimal design method of large-scale central air-conditioning chilled water pipe network based on suboptimal algorithm
  • Optimal design method of large-scale central air-conditioning chilled water pipe network based on suboptimal algorithm

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Experimental program
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Effect test

Embodiment 1

[0096] Optimal design method of large-scale central air-conditioning chilled water pipe network based on suboptimal algorithm, such as figure 1 shown, including the following steps:

[0097] S1. Establish the thermal performance calculation model of the terminal equipment: establish the physical model of the surface cooler, considering the dry bulb temperature of the outdoor environment, the wet bulb temperature of the outdoor environment, the dry bulb temperature of the indoor control point, the chilled water inlet temperature of the surface cooler, the total air volume, and the fresh air Ratio, cooling load, humidity load 8 input parameters, establish the heat-humidity balance equation and obtain the chilled water flow of the surface cooler, the return temperature of the chilled water of the surface cooler, the temperature difference of the air supply, the wet bulb temperature of the indoor control point, The temperature of the indoor control point, the dry bulb temperature ...

Embodiment 2

[0174] Taking an east-west facing office building in Guangdong as the research object, the office building includes public office areas (high mobility of personnel), offices, conference rooms, staff canteens, lecture halls and other functional spaces, among which the air-conditioning area on the first floor covers an area of ​​270m 2 , The area of ​​the air-conditioning area on the second floor is 370m2 2 , The area of ​​the air-conditioning area on the third floor is 370m2 2 , The area of ​​the air-conditioning area on the fourth floor is 270m2 2 , with a total air-conditioning area of ​​1240m 2 , there are two air cabinets on the first floor, three air cabinets on the second floor, three air cabinets on the third floor, and two air cabinets on the fourth floor to supply air to the air-conditioning area on each floor. Buildings with one to four floors There is an area in the middle with an area of ​​36m 2 the atrium.

[0175] Due to the particularity of the business of th...

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Abstract

The invention discloses a suboptimal algorithm-based optimal design method for a large-scale central air-conditioning chilled water pipe network. The present invention constructs a thermodynamic model of a large-scale central air-conditioning chilled water pipe network, and integrates existing traditional pipe network design methods such as: the recommended flow rate method and the most unfavorable loop economic ratio friction method and traditional optimization design methods such as: simulated annealing algorithm, Genetic algorithm and neural network algorithm for the optimal design effect of the central air-conditioning pipe network, a suboptimal calculation method of random walk is proposed to abandon the optimal solution to obtain a suboptimal solution for the pipe diameter design scheme suitable for various load distribution changes , taking the initial investment and annual operating cost of the pipeline network as the objective function to optimize the calculation, through the forward optimization calculation and reverse verification calculation, and finally analyzed the influence of different load distribution forms and load rate distribution on the optimal calculation results of the pipeline network diameter and its adaptive effects. In order to achieve the purpose of saving energy consumption, it is conducive to the sustainable development of modernization.

Description

technical field [0001] The invention relates to the field of optimal design of large-scale central air-conditioning chilled water pipe networks, in particular to an optimal design method for large-scale central air-conditioning chilled water pipe networks based on suboptimal algorithms. Background technique [0002] In the 21st century, Chinese cities have developed in the direction of internationalization, ecology, modernization, and intelligence. The rapid expansion of urban scale has intensified the density of urban buildings. As an indispensable part of urban public buildings, central air-conditioning systems have always had high energy consumption. attention. The unreasonable early design and unscientific operation management of the air conditioning system are the main causes of ineffective energy consumption. It is also an indisputable fact that the actual energy-saving operation of large-scale central air-conditioning systems generally has problems such as poor stabi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06Q30/02
CPCG06Q30/0206
Inventor 刘雪峰蒋航航路坦王家绪郑宇蓝刘金平
Owner SOUTH CHINA UNIV OF TECH
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