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Optimal scheduling method for energy-saving operation of air-conditioning system

An air conditioning system, operation optimization technology, applied in the direction of machinery and equipment

Active Publication Date: 2020-06-30
安徽省建筑设计研究总院股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the air conditioning system with adjustable cooling capacity, heat supply, and flow rate, there is a matching problem between the active adjustment of cold and heat source equipment and the active adjustment of circulating water pump frequency conversion

Method used

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  • Optimal scheduling method for energy-saving operation of air-conditioning system
  • Optimal scheduling method for energy-saving operation of air-conditioning system
  • Optimal scheduling method for energy-saving operation of air-conditioning system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] Embodiment 1: as figure 1 , 2 As shown, a method for optimal scheduling of energy-saving operation of an air-conditioning system includes the following steps:

[0088] S1: According to the energy consumption status of each equipment of the air conditioning system, construct the total objective function for calculating the minimum total energy consumption, the formula is as follows:

[0089]

[0090] In the formula: x is the load rate of each equipment, the value is [0~1]; k is the number of each equipment type, which is determined by the system equipment composition, and the value is [a~d]; j is the number number of k equipment, which is determined by the system The number of devices is determined, and the value is [1~m]; i is the running time of each device, and the value is [1~24];

[0091] S2: Input the predicted load Q to be distributed i , sort the equipment according to the order of peak price priority in the schedule, and judge the forecasted load Q i Whet...

Embodiment 2

[0151] Embodiment 2: as attached Figure 7 , as shown in Table 1 to Table 7, the building air conditioning system of an international hotel in Hefei consists of two centrifugal chillers, two vacuum gas boilers, two sets of cooling towers (3 for each set) and hot and cold water pumps (freezing, cooling , three hot water pumps each). Its system is in the form of Figure 7shown. The optimal operation strategy calculation method proposed by the invention is used to calculate the specific daily load distribution. The calculation results are shown in attached tables 1 to 4, and the output results show that the present invention has achieved the design goal. The present invention can adjust parameters according to actual projects, so as to realize the purpose of saving energy and cost. In Table 1, the colors from dark to light represent peak electricity price, average electricity price and valley electricity price respectively.

[0152] The above technical features constitute th...

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Abstract

The invention relates to the technical field of energy-saving scheduling for an air conditioning system, in particular to an energy-saving operation optimization scheduling method for the air conditioning system, which comprises the following steps of: constructing of a total objective function for calculating the minimum total energy consumption; inputting the predicted load Q (i) i ( / i) to be allocated, sequencing the devices according to the priority order of the peak price in the schedule to judge whether the predicted load Q (i) i ( / i) is higher than the minimum starting load of the system and whether the predicted load Q (i) i ( / i) is higher than the minimum output load of the unit; judging whether the air conditioning system is a cold supply mode or a heat supply mode; respectivelyentering a water pump frequency conversion module and a cooling tower module for frequency modulation calculation according to the calculated data; setting a constraint condition of the temperature ofthe inlet and outlet water to judge whether the temperature of the inlet and outlet water meets the constraint condition; calculating the energy consumption of each device. The method comprises respectively calculating the power consumption of equipment such as a water chilling unit, a water pump, a cooling tower, a boiler and the like to arrange the equipment in a large-small sequence, screeningby taking the minimum total power consumption of an air conditioning system as a target to obtain the minimum power consumption, and outputting a corresponding equipment optimization operation strategy.

Description

technical field [0001] The invention relates to the technical field of energy-saving dispatching of an air-conditioning system, in particular to an optimal dispatching method for energy-saving operation of an air-conditioning system. Background technique [0002] At present, in the actual air-conditioning system engineering and design work, the primary pump variable flow system is widely used in the transmission and distribution of system cooling and heat supply. The variable flow rate system of the primary pump can use the frequency conversion of the water pump to adjust the water supply flow rate of the user according to the load change of the user end to achieve the purpose of energy saving. Compared with the variable flow rate system of the secondary pump, the primary pump system has the advantages of saving initial investment, saving operating energy consumption, and reducing energy consumption of water pumps. The unit often has linkage control with the water pump, whi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/46F24F11/64F24F11/65
CPCF24F11/46F24F11/64F24F11/65
Inventor 何官送黄世山毕功华王浩高峰张家瑶
Owner 安徽省建筑设计研究总院股份有限公司
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