Refrigerating capacity prediction method for centralized cooling system and control system
A technology of centralized cooling and prediction method, which is applied in the direction of heating and ventilation control system, heating and ventilation safety system, control input related to air characteristics, etc. It can solve problems such as excessive cooling capacity, unconsidered environmental factors, surplus, etc., to achieve The effect of improving system efficiency, improving stability and energy utilization efficiency
Active Publication Date: 2021-12-07
广州珠江新城能源有限公司
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Problems solved by technology
[0004] There are many deficiencies in this control method, such as not considering environmental factors, human factors, etc., resulting in a large difference between the predicted cooling capacity and the actual cooling capacity sold on the day, resulting in Excessive surplus of cooling capacity, even in short supply
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[0053] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0054] figure 1 Schematically shows the structure of the relationship between the central cooling system and users.
[0055] combine image 3 , the refrigerating prediction method applied to this kind of central cooling system provided by the present invention comprises the following steps:
[0056] Construct the weekly coefficient table, and record the weekly coefficient as M;
[0057] Construct the temperature variation coefficient, which is denoted as N;
[0058] Obtain yesterday's cooling sales, record yesterday's cooling sales as H s ;
[0059] Calculate the precooling capacity H b ,in,
[0060] Formula (1): H b =H s ·M·N
[0061] The precooling capacity H is obtained by formula (1) b .
[0062] The invention provides a method that can be applied to predict the cooling capacity of a central cooling system. In the present invention, the model s...
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The invention discloses a refrigerating capacity prediction method for a centralized cooling system and a control system. The refrigerating capacity prediction method for the centralized cooling system comprises the following steps of constructing a weekly coefficient table, and recording the weekly coefficient as M; constructing a variable temperature coefficient, and recording the variable temperature coefficient as N; acquiring the yesterday cold selling quantity, and recording the yesterday cold selling quantity as Hs; and calculating the pre-refrigerating capacity Hb. The control system applies the refrigerating capacity prediction method. The weekly coefficient table and the variable temperature coefficient are constructed, so that a model architecture of a prediction refrigerating capacity calculation formula is obtained. The prediction result is applied to the centralized cooling system, a reasonable refrigeration scheme can be formulated, the energy supply amount is optimized and adjusted, and the operation stability and the energy utilization efficiency of the centralized cooling system are further improved; an energy-saving and efficient system refrigeration scheme is realized; and the system efficiency can be improved, and energy conservation and emission reduction are achieved.
Description
technical field [0001] The invention relates to the technical field of cooling supply control, in particular to a cooling capacity prediction method and a control system for a centralized cooling supply system. Background technique [0002] With the development of the city, the continuous increase of high-end communities, office buildings and urban complexes, there are more and more centralized cooling systems including central air conditioning, the market is getting bigger and bigger, and the demand for multi-energy is increasing. Cooling energy consumption accounts for 60% of building energy consumption, so the energy-saving management of central cooling system is particularly important. At present, the main control method of the centralized cooling system is as follows: the cooling unit at the energy supply end operates at a fixed outlet water temperature, and the cooling unit at the energy supply end calculates the temperature difference according to the temperature of t...
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IPC IPC(8): F24F11/47F24F11/64F24F11/88F24F110/10
CPCF24F11/47F24F11/64F24F11/88F24F2110/10
Inventor 滕林古林平朱清华杨日贵
Owner 广州珠江新城能源有限公司