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Peak load shifting control method for central air conditioner ice storage

A technology of shifting peaks and filling valleys and control methods, applied in heating and ventilation control systems, heating methods, space heating and ventilation, etc.

Inactive Publication Date: 2012-06-27
深圳市得益节能科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the ice storage system, the control of ice storage and ice melting and cooling is mainly performed manually. The switching between ice storage and cooling is realized through the control of electric valves. Time, and how to allocate it reasonably and use the stored cooling capacity for intelligent control

Method used

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  • Peak load shifting control method for central air conditioner ice storage
  • Peak load shifting control method for central air conditioner ice storage
  • Peak load shifting control method for central air conditioner ice storage

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Embodiment Construction

[0033] The control method for central air-conditioning ice storage, peak shifting and valley filling proposed by the present invention includes two parts: ice storage control and ice melting and cooling control, wherein:

[0034] 1. Ice storage control methods such as figure 1 shown, including the following steps:

[0035] Step 1. During peak and valley periods, combined with the peak and valley electricity price schedule and historical cooling load data, through load analysis and calculation, predict the load demand X of the next day;

[0036] Step 2. According to the load demand X and the refrigerating capacity of each refrigerating unit under dual working conditions, determine the number of refrigerating units that start ice storage, and set the ice storage capacity Q 冰 ;

[0037] Step 3. Start the ice storage operation and monitor the ice storage capacity. When the ice storage capacity reaches the set ice storage capacity Q 冰 , end the ice storage operation.

[0038] I...

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Abstract

The invention discloses a peak load shifting control method for central air conditioner ice storage, which comprises two control parts of ice storage and ice melting for cold releasing, wherein the control of ice storage comprises the steps of analyzing cooling load and pre-judging load required amount for next day; judging the number of ice storage starting cooling units and setting ice storage amount ice Q according to load required amount X and cooling capacity of each double-working-condition cooling main machine; and starting ice storage operation and monitoring ice storage amount, and finishing the ice storage operation when the ice storage amount reaches the set ice storage amount ice Q. The control of ice melting for the cold releasing control part comprises the steps of counting total load amount total Q of the units; analyzing and calculating load parameters at a peak time interval in the current day; and judging working conditions, controlling ice melting process according to the different working conditions, and preferably meeting ice melting for cold supply at the peak time interval most reasonably. The method of the invention can realize intelligent control of ice making for the ice storage and the ice melting for the cold releasing, so that a system can save power consumption cost to the greatest extent.

Description

technical field [0001] The invention relates to air-conditioning technology, in particular to a control method for central air-conditioning ice storage, peak shifting and valley filling. Background technique [0002] As an energy-saving technology, ice storage technology has been widely used in central air-conditioning systems. This technology is mainly to use the dual-working condition main engine to store ice during the low power consumption period at night, and release the cold energy stored at night by melting the ice during the peak period of power consumption during the day, so as to be used during the peak period. This method not only utilizes the peak and valley of electricity consumption to alleviate the demand for electricity consumption, but also takes advantage of the difference in electricity price between peak and valley to save costs for users. [0003] The existing ice storage system mainly includes ice storage tanks, ice storage buckets, ice storage refrige...

Claims

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Application Information

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IPC IPC(8): F24F11/00
Inventor 蔡应棠李铁牛杨波
Owner 深圳市得益节能科技股份有限公司
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