Heating tail end intelligent on-off adjusting method based on double-time step

A technology of time step length and adjustment method, which is applied in the directions of space heating and ventilation details, space heating and ventilation, and heating methods, etc. It can solve the unstable hydraulic conditions of the heat network, affect the room temperature control of heat users, and affect the heat network. Hydraulic working conditions and other problems, to achieve the effect of fast and reliable room temperature adjustment, hydraulic stability of the heating system, and easy engineering application

Inactive Publication Date: 2019-04-02
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

In addition, the terminal intelligent on-off adjustment not only directly affects the room temperature control of heat users, but also affects the hydraulic conditions of the heat network
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  • Heating tail end intelligent on-off adjusting method based on double-time step
  • Heating tail end intelligent on-off adjusting method based on double-time step
  • Heating tail end intelligent on-off adjusting method based on double-time step

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Embodiment 1

[0061] This embodiment relies on the image 3 The comprehensive simulation platform of building and heating system shown in the figure dynamically simulates the room temperature change and the heating system flow change under the terminal intelligent adjustment method of the present invention, so as to test the feasibility and control effect of the present invention.

[0062] Assuming that the set value of the user's room temperature is 20°C, the intelligent on-off adjustment method of the heating terminal in this embodiment includes the following steps:

[0063] (1) Determine the double time step. The first time step, considering the thermal inertia of the building envelope and the allowable deviation of heating room temperature control, takes 30 minutes; the second time step, taking into account the water storage replacement time of the heating user branch and the minimum on-off cycle limit of the control valve, takes 3 minutes .

[0064] (2) In the room temperature contro...

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Abstract

The invention discloses a heating tail end intelligent on-off adjusting method based on a double-time step, and belongs to the technical field of indoor environment control. The method comprises the following steps that the double-time step is determined, including a first time step and a second time step; a duty cycle prediction model is established based on the first time step, and the opening duty ratio of the valve in the future room temperature control period is predicted; and based on the second time step, the on-off time sequence of each user is optimized. By means of the method, collaborative adjustment of different response frequency variables such as room temperature and flow can be flexibly achieved through the double-time step, so that the multi-element control goal of fast andreliable adjustment of indoor room temperature and hydraulic stability of a heating system is achieved. The defects that in an existing heating system tail end adjusting method, the room temperatureadjustment is easy to lag, the hydraulic instability is unstable and the like are overcome. The method is matched with the control characteristics of a building and the heating system, and simple andfeasible, and facilitates engineering application.

Description

technical field [0001] The invention belongs to the technical field of indoor environment control, and in particular relates to an intelligent on-off adjustment method for heating terminals based on dual time steps. Background technique [0002] Realizing effective room temperature regulation at the end of the heating system is of great significance for meeting the diverse heat demands of users and avoiding overheating and waste. Since 2012, the on-off time-area method has been applied on a large scale in Jilin, Hebei, Beijing and other regions. The on-off time area method, that is, through the full opening and closing of the intelligent on-off valve installed at the thermal entrance of each household, the amount of heating water entering the household is controlled, thereby realizing room temperature adjustment. However, in the prior art, only the hardware at the end of most heating systems has the intelligent on-off adjustment function, and the corresponding intelligent o...

Claims

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Application Information

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IPC IPC(8): F24D19/10G06F17/50
CPCF24D19/1006G06F30/20G06F2119/08
Inventor 徐宝萍张超
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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